special metal & alloys
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Special Metal& Alloys
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1 2
Product Corresponding Standards Reference List of World Manufacturers' Alloys
NSSMC Standard Number Features Density ASTM BS DIN/SEW AMS JIS Remarks Haynes VDM Creusot-Loire Sandvik Uddeholm Avesta Special
Metals Carpenter Remarks
Invar Alloy NSSMC-NAR-E-360 3 Fe-36% nickel alloy, featuring a lower thermal-expansion coefficient. 8.2 (PD)
Co
rros
ion
Res
ista
nce
Allo
ys
NIC
KEL
-BA
SE A
lloys
NSSMC-NAR-N201 4 Pure nickel for industrial use, with high corrosion resistance, excellent high temperature strength and low temperature toughness. 8.89 B162 UNS N02201 NW2201
NSSMC-NAR-66NEL 5 Nickel-copper alloy highly resistant to sea water, alkalis and fluoric acid. 8.83 B127 UNS N04400 NA13 2.4360 4544 NCuP Nickel Alloy
400 Nicorros Monel Alloy 400
NSSMC-NAR-25-50MTi(NSSMC-NAR-B) 6 Super corrosion resistant, high quality alloy with good
weldability fabrication properties. 8.20 B582 UNS N06975
IRO
N-B
ASE
Allo
ys /
STA
INLE
SS S
TEE
L
NSSMC-NAR-HCR-18 7 Austenitic stainless steel, highly resistant to sulfer dewpoint corrosion and sulfuric acid corrosion. 7.98
NSSMC-NAR-825 8 High quality alloy with excellent resistance to mixed acid sulfuric and phosphoric acid and to stress corrosion cracking. 8.14 B424 UNS N08825 NA16 2.4858 NCF825 Nickel Alloy
825Nicrofer
4221 Alloy 825 Incoloy Alloy825
NSSMC-NAR-20-3 9 High nickel stainless steel with excellent resistance to sulfuric and to stress corrosion cracking. 8.05 A240 UNS N08020
B463 UNS N08020Nicrofer
3620 20Cb3
NSSMC-NAR-20-25MTi(NSSMC-NAR-A) 10 High nickel austenitic stainless steel highly resistant to pitting
water. 8.05 B620 UNS N08320 HastelloyM-532
JessopJS700
NSSMC-NAR-AC-3 11 Super austentic stainless steel excellent resistant to sea water. 8.06 B625 UNS N08925 SUS836L
NSSMC-NAR-AC-4 11 Super austentic stainless steel excellent resistant to sea water. 8.05
NSSMC-NAR-20-25LMCu 13 High nickel stainless steel with excellent resistance to corrosion and pitting. 8.05 A240 UNS N08904 1.4539 SUS890L Alloy
No.904LCronifer1925LC UranusB6 2RK 65 UHBStainless
904L 254SLX Alloy904L
NSSMC-NAR-310ELC 14 Extremely low carbon 25Cr-20Ni steel with resistance to temperature and highly concentrated alkali conditions. 8.03
NSSMC-NAR-SN-1 15 Stainless steel resistant to concentrated nitric acid. 7.68
NSSMC-NAR-SN-3 15 Stainless steel resistant to concentrated nitric acid. 7.64
NSSMC-NAR-SN-5 15 Duplex stainless steel resistant to concentrated nitric acid. 7.80
NSSMC-NAR-DP-3 17 Duplex stainless steels suited for uses in chloride solutions and/or sea water. 7.80 A240 UNS S31260 SUS329J4L Uranus 52
NSSMC-NAR-DP-8 17 Duplex stainless steels suited for uses in chloride solutions. 7.80 A240 UNS S31803 1.4462 SUS329J3L Cronifer2205LCN
Uranus 45N SAF 2205 2205
NSSMC-NAR-DP-12 17 Duplex stainless steels suited for uses in Urea plants. 7.80 A240 UNS S31260 SUS329J4L Uranus 52
NSSMC-NAR-F 17 Duplex stainless steels suited for uses in chloride solutions. 7.80 A240 UNS S32900 1.4460 SUS329J1 10RE21 44LN 453S
NSSMC-NAR-DP-3N 19 Excellent corrosion resistant, duplex stainless steel use in chloride solutions and/or hot-sea water. 7.80 A240 UNS S31260 SUS329J4L Uranus 52
NSSMC-NAR-DP-3W 19 Excellent corrosion resistant, Super duplex stainless steel use in chloride solutions and/or hot-sea water. 7.94 A240 UNS S39274
NSSMC-NAR-DP-28W 20 Exellent corrosion resistance, duplex stainless suited for use in urea-carbamete. 7.86 A240 UNS S32808
Hea
t R
esis
tanc
e A
lloys NIC
KE
L-B
ASE
Allo
ys NSSMC-NAR-600 21 Nickel base alloy resistant to corrosion caused by temperature alkali or water as well as to oxidation. 8.42 B168 UNS N06600 NA14 2.4816 5540 NCF600 Nickel Alloy
600Nicrofer
7216,7216HSANICRO
71Inconel
Alloy 600Pyromet
600
NSSMC-NAR-601 22 Nickel-based alloy with excellent resistance to high temperature oxidation and scaling. 8.10 B168 UNS N06601 2.4851 5870 NCF601 Nicrofer
6023Inconel
Alloy 601
IRO
N-B
ASE
Allo
ys /
STA
INLE
SS S
TEE
L NSSMC-NAR-800 23 Heat resistant alloy with remarkable strength under temperature. Resistant to carburization, nitriding and oxidation. 8.02 A240 UNS N08800
B409 UNS N08800 NA15 1.4876 5871 NCF800 Nickel Alloy800
Nicrofer3220 SANICRO
31Incoloy
Alloy 800Pyromet
800
NSSMC-NAR-800H 23 Heat resistant alloy with remarkable strength under temperature. Resistant to carburization, nitriding and oxidation. 8.02 A240 UNS N08810
B409 UNS N08810 1.4876 NCF800H Nickel Alloy800H
Nicrofer3220H
SANICRO 31
Incoloy Alloy 800H
NSSMC-NAR-AH-1 24 Austenitic stainless steel, specifically developed for uses corrosive environments at higher temperatures. 7.93
NSSMC-NAR-AH-4 25 Heat-resistant austenitic stainless steel with excellent mechanical properties at high temperature. 7.88 A240 UNS S31060
NSSMC-NAR-AH-7 26 Heat-resistant austentic stainless steel with exellent mechanical properties and oxidation resistance of high temperature and high humidity. 7.78
Note:Hastelloy is a trademark of Haynes International Inc.; Cronifer, Nicrofer, and Nicorros are trademarks of ThyssenKrupp VDM; Uranus is a trademark of Creusot-Loire Industrie; SAF2205 and SANICRO are trademarks of Sandvik Inc.; Incoloy, Inconel and Monel are trademarks of Special Metals Corp.; Carpenter and Pyromet are trademarks of Carpenter Technology Corp.; UHB is a trademark of Uddeholm Steel AB; JS700 is a trademark of Jessop Steel Company.
3 4
Pure nickel for industrial use, with high corrosion resistance and excellent high temperature strength and low temperature toughness. Nickel 201, JIS NW2201ASTM(ASME) UNS N02201
plate, sheet, strip
Soda and food processing equipment, heat exchanger, and electronic tuberechargeable batteries
1. Highly resistance to sea water.2. Highly resistance to pitting, crevice corrosion and stress corrosion cracking due to chlorides.3. Applicable under reducing and oxidizing atomosphere.4. Resistance to alkali. Shows particularly high corrosion resistance to caustic soda.
0.020.070.5
300600
1,219
1,000 2,000 3,000
1,524
2.0
3.0
30.0
Width(mm)
Thickness(mm)
C max Si Mn Ni Cu Fe
0.02 0.1 0.2 99.5 0.01 0.15
Annealed 0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%)
Annealed ≧ 80[177] ≧ 345[401] ≧ 40[54]
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
2.5350
300
250
200
150
100
50
0
2
1.5
1
0.5
00 20 40 60 80 100 10 20 30
30℃
HCI (%)NaOH (%)
mm/y
Temperature (℃)
Corrosion rate of NSSMC-NAR-N201in hydrochloric acid.
Iso-corrosion rate curve of NSSMC-NAR-N201in caustic soda (mm/y)
40
1.25
0.25
0.025
<0.025
<0.025
0.025~0.25
0.25~1.25
No air (N2 saturation)5m/min, for 48 hrs.
Boiling point curve
Melting point curve
Air saturation7m/min, for 24 hrs.
1. Very low thermal expansion coefficient at lower to room temperatures (approx. 10% that of SUS304).2. Highly stable austenitic structure with soft and minimum work hardening features, contributing to a higher malleability.
3.0
1,000 2,000 3,000
0.3
30.0
1,000
Width(mm)
Thickness(mm) 1,524
30.0
Fe-36% nickel alloy, featuring a lower thermal expansion coefficient.
plate, sheet, strip
Precision Equipment and Instruments, Bimetals, LNG Containers
CHEMICALCOMPOSITION(typical example: %)
PHYSICALPROPERTY
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
NSSMC Standard(NSSMC-NAR-E-360〈Invar Alloy〉)
NSSMC Standard(NSSMC-NAR-N201)
C max Ni+Co
0.030 36
Coefficient of Thermal Expansion(×10-6/℃)
≦ 2.0(20~ 100℃)
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HRB)
≧ 240[304] ≧ 440~ 550[461] ≧ 30[37] 65~ 82[72]
40018
16
14
12
10
8
6
4
2
0
300
200
1000 10 20 30
Cold Rolling Ratio (%)
Temperature (℃)
Hardness (Hv)
Coefficient of Thermal Expantion (×10
-6 /℃)
Varying hardness with cold rolling ratioThermal expansion coefficientsagainst temperatures
40 50 600
-200
0 0 30 30 30 30 30〜
-100〜
100〜
300〜
200〜
400〜
500〜
SUS304
SUS304
E360
E360
5 6
High quality alloy with super corrosion resistant and good weldability and fabrication properties. ASTM(ASME) UNS N06975
plate, sheet
Chemical equipment for high concentration chlorides, sea water equipment, pollution prevention plants, equipment for acid and alkali reaction, heat exchangers for highly corrosive chemicals
1. Highly resistance to acids and alkalis, as well as to various types of local corrosion.2. Completely immune to stress corrosion cracking by chlorides.3. Highly resistance to pitting and crevice corrosion in high temperature salt water and chloride solutions.4. Good weldability, excellent corrosion resistance of heat-affected zone.
3.0
1,000 2,000 3,000
1,524
30.0
Width(mm)
Thickness(mm)
C max Cr Ni Mo Cu Ti
0.03 25 50 6 1 1
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HRB)
205~ 345[326] 640~ 740[688] ≧ 45[55] ≦ 87[85]
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
0.5
0.4
0.3
0.2
0.1
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0
0 20 40 60 80 100-0.10 0
Solution
120min
Heating duration
3min
30min
Sensitizing temperature (℃)
Heat sensitizing test using a solutionof 10% HNO3, and 3% HF at 60℃
Temperature (℃)
SUS316
20-25MTi
25-50MTi
Pitting potential-temperature curve in0.5M NaCl solutions
Corrosion rate (g/m
2 ・h)
Pitting potential Vc' (vs. SCE)
650 700 800 900 1050
Nickel-copper alloy with high resistant to sea water, alkalis and fluoric acid.ASTM(ASME) UNS N04400
plate, sheet
Sea water desalination and other marine use facilities, chemical processing equipments, oil refinery equipment, paper pulp manufacturing equipment
1. Resistance to sea water.2. Highly resistance to pitting, crevice corrosion and stress corrosion cracking by chlorides.3. Excellent resistance to acids, especially to hydrofluoric acid and fluoric gas.4. Highly resistance to alkalis. Corrosion resistance to caustic soda of concentration up to 70%.5. Highly well ductile, fabricability and machinability.
1,000 2,000 3,000
1,5243.0
30.0
Width(mm)
Thickness(mm)
C max Si max Mn Ni Cu Fe
0.3 0.5 1 66 Bal. 1
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HRB)
≧ 165[282] ≧ 490[549] ≧ 35[43] ≧ 65~ 90[74]
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
100
75
50
25
00 10
0.1
HCI (%)
Iso-corrosion rate curve in sulfulic and hydrochloric acid solutions (mm/y)
H2SO4 (%)
Temperature (℃)
1.0
0.5
b.p
20 30 40
150
100
75
125
50
25
00 20
0.1Temperature (℃)
1.0
0.5
b.p
40 60 80 100
NSSMC Standard(NSSMC-NAR-66NEL)
NSSMC Standard(NSSMC-NAR-25-50MTi, NSSMC-NAR-B)
7 8
plate, sheet
Phosphoric acid manufacturing plant, acid bath equipment parts, chemical equipment, heating element
1. Excellent resistance to various types of corrosion.2. Immune to stress corrosion cracking by chloride ions because of the high nickel content.
Molybdenum and copper increases the resistance to non oxidizing acids, and chromium to oxidizing acids.3. Extremely resistance to corrosion by sulfuric acid, phosphoric acid and sea water.4. Resistance to pitting and intergranular corrosion even aftersensitizing treatment (650~ 760℃ ).
1,000 2,000 3,000
1,5243.0
30.0
Width(mm)
Thickness(mm)
High quality alloy with excellent resistance to mixed acid of sulfuric and phosphoric and to stress corrosion cracking.ASTM(ASME) UNS N08825
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
C max Cr Ni Mo Cu Ti Al
0.05 21 42 3 2.2 1 0.05
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HRB)
≧ 235[379] ≧ 580[668] ≧ 30[47] ≦ 96[81]
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
Austenitic stainless steel with high resistant to sulfer dewpoint corrosion and sulfuric acid corrosion.
plate, sheet, strip
1. Exhaust gas equipments (ex. boiler etc.) that burns sulfer containing fuels
2. Sulfuric acid manufacutuaring equipment
3. Exhaust gas desulfurizer4. Lining of chimney
1. Excellent corrosion resistance to sulfuric acid solution equal to high Cr-Ni alloys. 2. Performance more than the equal to SUS316L for a local corrosion by chlorides.3. Good weldability as well as current austenitic stainless steel, using welding consumables Inconel 625 or Hastelloy C-276.
0.8
1,000 2,000 3,000
1,000
1,5243.0
30.0
Width(mm)
Thickness(mm)
C max Cr Ni Mo Cu N max
0.03 18.8 15.6 3.4 4.2 0.045
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HRB)
≧ 175[295] ≧ 480[539] ≧ 35[43.6] ≦ 90[82]
HCR-18
SS400
CR1A
SUS316L
NCF825
HCR-18
SS400
CR1A
SUS316L
NCF825
HCR-18
SS400
CR1A
SUS316L
NCF825
40
30
20
10
0
10
<0.5
20
100
100050%H2SO4, 70℃ 70%H2SO4, 100℃ 80%H2SO4, 140℃
0HCR-18 SS400 CR1A
Corrosion Rate (g/m
2 ・h)
Corrosion Rate (g/m
2 ・h)
Results of hydrochloric acid corrosion testsResults of sulfuric acid corrosion tests
SUS316L NCF825
5%HCl, 40℃
120
100
80
60
40
20
0
0 10 20
HCI (%)
Temperature (℃)
Temperature (℃)
0.2
1.0
b.p
0.5
30 40
120
100
80
60
40
20
0
0 20 40
H2SO4 (%)
0.1
1.0
b.p
0.5
60 80 100
Iso-corrosion rate curve in sulfuric acid and hydrochloric acid solutions (mm/y)
NSSMC Standard(NSSMC-NAR-HCR-18)
NSSMC Standard(NSSMC-NAR-825)
9 10
High nickel austenitic stainless steel with high resistance to pitting and sea water.ASTM (ASME) UNS N08320
plate, sheet
Various types of sea water equipment, pollution-prevention plants, equipment for handling acids and alkalis, heat exchangers
1. Highly resistance to pitting and crevice corrosion by sea water and hot concentrated, salt solution.2. Strong passivating tendency and excellent corrosion resistance in various types of chemical processes using phosphoric, fluoric, acetic and other acids.3. Remarkably resistance to corrosion in high concentration alkali solutions.4. Fabrication and welding readily, with little deterioration of corrosion resistance.
1,000 2,000 3,000
1,5243.0
30.0
Width(mm)
Thickness(mm)
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
C max Cr Ni Mo Ti
0.05 22 26 5 0.3
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HRB)
≧ 195[315] ≧ 540[589] ≧ 35[50] 71~ 90[85]
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
C max Cr Ni Mo Cu Nb min
0.07 20 33 2.5 3 C×8
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HRB)
≧ 245[327] ≧ 550[625] ≧ 30[44] ≦ 95[83]
High nickel stainless steel with excellent resistance to sulfuric acid and to stress corrosion cracking.ASTM (ASME) UNS N08020
plate, sheet
Chemical processing equipment, stack-smoke desulfurization equipment, pulp processing machinery, sea water desalination equipment, nuclear fuel waste disposal equipment
1. Excellent corrosion resistance to sulfuric acid solution. NSSMC-NAR-20-3 is strongly resistance to stress corrosion cracking by hot sulfuric acid solution.2. Highly resistance to nitric, phosphoric and various organic acids.3. Excellent resistance to alkalis. Resists to 50% caustic soda up to the boiling point.4. Excellent resistance to sea water.
1,000 2,000 3,000
1,5243.0
30.0
Width(mm)
Thickness(mm)
1.0
1.0
0.5
0.1
b.p
0.8
0.6
0.4
0.2
0
0 20 40 60
Time (Hr)
H2SO4 (%)
Corrosion rate (g/m
2 ・h)
Temperature (℃)
80 100 120
Corrosion rate-time curves in 3% H2SO4 at 100℃Iso-corrosion rate curve of NSSMC-NAR-20-3in sulfuric acid solution (mm/y)
140
120
100
80
60
40
20
0
0 20 40 60 80 100
0.800.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0
-0.10
0.60
0.40
0.20
0
-0.20
00 20 40 60 80 100
1 2 3 4 5 6Mo (%)
Temperature (℃)
SUS 316
SUS 304
20-25MTi
Pitting potential Vc' (vs. SCE)
Pitting potential Vc' (vs. SCE)
Relationship between potential forpitting of welded portion and surfacetreatment. 0.6N NaCl, 80℃, pH = 3
Pitting voltage-temperature curve in0.5M NaCl solutions
Parent material 21 Cr-25Ni-MoWelding metal, acid washWelding metal, 03# GrindingWelding metal, Welding only
NSSMC Standard(NSSMC-NAR-20-3)
NSSMC Standard(NSSMC-NAR-20-25MTi, NSSMC-NAR-A)
11 12
plate, sheet
Sea water heat exchanger, Desalinization of sea water plant, Salt manufacture equipment, Paper manufacturing plant, Pulp bleaching equipment, Exhaust gas desulfurizer, Acid-proof apparatus, Various types of equipment for handling acids (Chloride environment)
1. Excellent resistance to sea water. Pitting corrosion in hot sea water is more excellent than duplex stainless steel : SUS329J4L.2. Excellent resistance to acids, and stress corrosion cracking by chlorides is more excellent than SUS316.3. Higher mechanical strength than SUS316.4. Good weldability as well as current austenitic stainless steel, using welding consumables Inconel 625 or Hastelloy C.
1,000 2,000 3,000
1,5243.0
30.0
Width(mm)
Thickness(mm)
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
C max Cr Ni Mo Cu N JIS Spec. ASTM Spec.
NSSMC-NAR-AC-3 0.02 20.0 25.0 6.2 1.0 0.14 SUS836L UNS N08925
NSSMC-NAR-AC-4 0.03 23.0 21.0 6.1 ─ 0.25 ─ ─
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HRB)NSSMC-NAR-AC-3 ≧ 245[325] ≧ 590[673] ≧ 40[58] ≦ 94[83]NSSMC-NAR-AC-4 ≧ 300[372] ≧ 650[735] ≧ 35[48] ≦ 100[90]
Super austenitic stainless steel suited for use chloride solutions and/or sea water.
6
41.0
0.8
0.6
0.4
0.2
0
2
00 0.1
N (%)Temperature (℃)
C-276625
29-4254SMO
20-25-625-4-4
20-25-4.5-Cu255
20-25-5DP3(329J4L)
447J1
825
316L444
DP8(329J3L)XM27329J1
DP1(18-5-3)
(Double-U-bend test piece, Aerated synthetic sea waterconcentrated 4 times, 125℃, 720h)
Effect of N contents on crevice corrosionElectrode potential for pitting corrosion in20000 ppm cl- solution
Cr+3Mo+10N (%)Pitting corrosion potential of various stainless steels and high Cr-Ni alloys
(Sythetic sea water: ASTM-D-1141, Deaerated 80℃, 20mV/min.)
Crevice Corrosion Loss (mg)
Pitting Corrosion Potential (vs. SCE)
Pitting Corrosion Potential (vs. SCE)
Base metal
weld metal(Weld Material: Inconel 625)
22Cr-25Ni-5.5Mo-0.8Cu-N(%)
0.29080706050 0.3
AC-4AC-3DP-3SUS 316L
1.0
0.8
0.6
0.4
0.2
0
20 30 40 50 70
: Austenite
: Duplex (Cr)-(Ni)-(Mo)
: FerriteAC-3
AC-4
Chemical composition of welding materials for NSSMC-NAR-AC-3 and NSSMC-NAR-AC-4 (%)
ASTM UNS No.Nb+ TaWFeMoCrNiWelding consumables
N066254─< 5922BAL.Inconel 625
N06022─341322BAL.Hastelloy C-22
N10276─451616BAL.Hastelloy C-276
NSSMC Standard(NSSMC-NAR-AC-3, AC-4)
13 14
High nickel stainless steel with excellent resistance to acid corrosion and pitting. ASTM(ASME) UNS N08904
Chemical processing equipment, sea water desalination plant, stack-smoke desulfurization, waste incineration, sewage disposal and other anti-pollution plants
1. Greater resistance to sulfuric acid, phosphoric acid, acetic acid and other nonoxidizing acids than Type 316 and Type 317.2. Highly resistance to pitting, crevice corrosion and stress corrosion cracking due to chlorides.3. Excellent resistance to sea water.4. Good fabricability and weldability.
1,000 2,000 3,000
1,5243.0
30.0
Width(mm)
Thickness(mm)
Extremely low carbon 25Cr-20Ni alloy with resistance to high temperature and alkalis.
plate, sheet, strip
Various brine electrolytic bath, caustic soda manufacturing equipment, nitric acid manufacturing plant, and various nitric acid processing equipment
1. High corrosion resistance to high concentrated alkali solutions at high temperature and excellent resistance to stress corrosion cracking.2. Strong resistance to intergranular corrosion in highly concentrated nitric solutions.
1,000 2,000 3,000
1,5243.0
30.0
Width(mm)
Thickness(mm)
0.3 1,219
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
C max Cr Ni Mo Cu
0.02 20 25 4.5 3
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HRB)
≧ 215[298] ≧ 490[559] ≧ 35[50] 71~ 90[78]
plate, sheet
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
C max Si Mn Cr Ni
0.02 0.6 1.4 25 20
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HRB)
≧ 175[303] ≧ 480[559] ≧ 40[46] ≦ 90[83]
120
100
80
60
40
20
0.1
Iso-corrosion rate curve in sulfulic and hydrochloric acid solutions (mm/y)
0.1
0.5
0.5
HCI (%)H2SO4 (%)
1.0
1.0
b.p
b.p
0
0
120
140
100
80
60
40
20
0
0 20 40 60 80 100 10 20 30 40
Temperature (℃)
Temperature (℃)
120
100
80
60
40
0.8
0.6
0.4
0.2
0
50 60 700 10 20 30 40 50HNO3 (%)NaOH (%)
Temperature (℃)
Corrosion rate (g/m
2 ・h)
Corrosion rate curve in nitric acidCorrosion rate curve in caustic soda (boiled)
80 90
SUS 304L310 ELC
<0.1g/m2・h310ELC
SUS304L
b.p
NSSMC Standard(NSSMC-NAR-20-25-LMCu)
NSSMC Standard(NSSMC-NAR-310ELC)
15 16
Stainless steel resistant to nitric acidNew materials developped jointry by Sumitomo Chemical Co., Ltd.
STEEL TYPESNSSMC-NAR-SN-1Excellent corrosion resistance against all concentrations of nitric acid, includingconcentrated nitric acid below 60℃ .
NSSMC-NAR-SN-3Higher resistance to corrosion by boiling nitric acid over 85% concentration.
NSSMC-NAR-SN-5Duplex stainless steel, featuring higher strength and also excellent resistance to medium concentration nitric acid.
plate, sheet
NSSMC-NAR-SN-1Nitric acid manufacturing plants, 98% Nitric acid storage and transportation tanks. Nitric and sulfuric acid mixture storage tanks
NSSMC-NAR-SN-3Heat exchangers for concentrated nitric acid
NSSMC-NAR-SN-5Heat exchangers for medium concentration nitric acid, and related towers
1,000 2,000 3,000
1,5243.0
30.0
Width(mm)
Thickness(mm)
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
C max Si Mn Cr Ni N Other Elements
NSSMC-NAR-SN-1 0.02 4.3 1.0 17 14.0 ─ Nb add
NSSMC-NAR-SN-3 0.02 6.0 0.7 11 16.5 ─ Ti:0.1, Zr:0.5
NSSMC-NAR-SN-5 0.02 0.6 1.0 27 8.4 0.10
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HB)NSSMC-NAR-SN-1 ≧ 245[328] ≧ 590[718] ≧ 40[57] 149~ 241[188]NSSMC-NAR-SN-3 ≧ 245[329] ≧ 590[738] ≧ 40[57] 149~ 241[183]NSSMC-NAR-SN-5 ≧ 390[560] ≧ 590[751] ≧ 18[33] ≦ 277[228]
120
100
80
60
120
100
80
60
4040 50 60 70 80 90
200
0.1
0.51
Liquidus
Corrosion rate (mm/year) diagram ofNSSMC-NAR-SN-1 (subjected to sensitizationfor 2 hours at 650℃) immersed in nitric acid
Atmospheric
boiling poin
t
curve
Liquidus
Atmospheric boiling
point
curve
20 40HNO3 (%)
HNO3 (%)
Temperature (℃)
Temperature (℃)
Temperature (℃)
60 80 100
120
100
80
60
4040
200
0.1
0.3
Liquidus
Corrosion rate (g/m2・h) diagram ofNSSMC-NAR-SN-3 (subjected to sensitizationfor 2 hours at 650℃) immersed in nitric acid
Corrosion rate (g/m2・h) diagram of NSSMC-NAR-SN-5immersed in nitric acid
Applicable regions of nitric acid corrosion resistant stainless steels at various temperatures and concentrations
Atmospheric
boiling poin
t
curve
20 40HNO3 (%)
Temperature (℃)
60 80 100
120
100
80
60
40
2020 40 60 80 1000
140
[Materials] Sensitised at 650℃ for two hours[Test period] 20 hours × 5 periods[Region] ①ー④, ⑥, ⑦:≦0.1mm/year ⑤:≦0.3mm/yearHNO3 (%)
Boling Cu
rve
①
②③
④ ⑤
⑥ ⑦
①304L304ELSN-1SN-3SN-5310ELC310Nb
②304L304ELSN-1SN-5310ELC310Nb
③304L304ELSN-5310ELC310Nb
④SN-5310ELC310Nb
⑤SN-3
⑥SN-1SN-3
⑦SN-3
Region
310ELC
SN-5
304 L〈0.1g/m2・hr〉
NSSMC Standard(NSSMC-NAR-SN-1, SN-3, SN-5)
17 18
Corrosion-resistant duplex stainless steels suited for uses in chloride solutions and/or sea water.
plate, sheet, strip
NSSMC-NAR-DP-3Heat Exchangers for Marine Use, Common Salt Manufacturing Plants, Pulp and Paper Plant, Chemical Plant
NSSMC-NAR-DP-8Water Reservoirs, Drilling and Excavating Plant, Oil Exploration Equipment, Heat Exchangers
NSSMC-NAR-DP-12Urea Plants
NSSMC-NAR-FGas Stack Desulfurizatioin Facilities, Water Gate Components, Chemical Plant Equipment
NSSMC-NAR-DP-3Higher resistance to pitting corrosion and SCC in sea water, at higher temperatures.
NSSMC-NAR-DP-8Higher resistance to pitting corrosion and SCC particularly in lower concentration chloride solutions as opposed to sea water.
NSSMC-NAR-DP-12Excellent resistance to intergranular corrosion of welded heat affected zone for Urea Plants.
NSSMC-NAR-FSuperior to SUS316 in resistance to pitting corrosion and SCC especially in lower concentration chloride solutions as opposed to sea water.
For Use in the presence of C1- Ion: NSSMC-NAR-DP-8 and NSSMC-NAR-FFor Use with Sea Water: NSSMC-NAR-DP-3
1,000 2,000 3,000
1,524DP-3
1,000
1,219
40.0
30.0
3.0
80.0
60.0
Width(mm)
Thickness(mm)
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
C Cr Ni Mo N Other Elements JIS Spec. ASTM Spec.
NSSMC-NAR-DP-3 0.02 25.2 7.2 3.2 0.14 Cu:0.5, W:0.3 SUS329J4L UNS S31260
NSSMC-NAR-DP-8 0.02 22.0 5.5 3.0 0.14 ─ SUS329J3L UNS S31803
NSSMC-NAR-DP-12 0.02 25.3 7.2 2.7 0.14 Cu:0.3, W:0.2 SUS329J4L UNS S31260
NSSMC-NAR-F 0.02 25.0 5.5 1.7 0.09 ─ SUS329J1 UNS S32900
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HB)NSSMC-NAR-DP-3 ≧ 450[608] ≧ 620[813] ≧ 18[31] ≦ 302[247]NSSMC-NAR-DP-8 ≧ 450[551] ≧ 620[795] ≧ 25[32] ≦ 290[240]
NSSMC-NAR-DP-12 ≧ 485[627] ≧ 690[764] ≧ 20[28] ≦ 290[241]NSSMC-NAR-F ≧ 390[571] ≧ 590[769] ≧ 20[32] ≦ 261[238]
0.01 1 10 100 1000
0.5
0.4
0.3
0.2
0.1
015 20
102 103 104
SUS 304SUS 304
SUS 316
SUS 316
DP-8
DP-8F
DP-3
DP-3
DP-3
20mV/min
Pitting corrosion potentials for different types ofstainless steel
ArtificialSea Water80℃
25
Pitting Corrosion Potential
(vs. SCE)
Pitting Corrosion Potential
(vs. SCE)
Cr + 3Mo + 10N (%)
Relationship between pitting corrosion potential and temperature,obtained from immersion test in 0.5 M NaCl solution
Temperature (℃)
Stress-rupture time diagram, obtained fromimmersion test in boiling 42% MgCl2 solution
Weld rod for duplex stainless steels
SCC test results (For double-U-bent test samples kept in saturated air for 500 hours)
30 35
0.9
0.7
0.5
0.1
0.2
0.3
-0.10 10 20 30 40 50 60 70 80 90
0.8
0.6
0.4
0
Rupture Time (h)
Applied Stresses (N/mm2 )
Temperatures (℃)
Cl- (ppm)
500
400
300
200
100
0
200
150
100
102 103 104
DP-8200
150
100
102 103 104
SUS316L
Free from CrackAny Cracks Observed
200
150
100
SUS 316
NAR-DP-3
Nippon Steel & SumikinWelding Co., Ltd.
Nippon Welding Rod Co., Ltd.
DP3
WEL 25-5
FC-DP3SF-DP3
─
YT-DP3
WEL TIG 25-5
YM-DP3
WEL MIG 25-5
Filler wire
Steel Rod
NSSMC-NAR-DP-3
NSSMC-NAR-F
SpoolCoatedelectrode
Flaskwire Manufacture
Weld material
SUS 316
DP-3
NSSMC Standard(NSSMC-NAR-DP-3, DP-8, DP-12 NSSMC-NAR-F)
19 20
Excellent corrosion resistant, Super duplex stainless steel suited for use in chloride solutions and/or hot-sea water.NSSMC-NAR-DP-3N ASTM(ASME) UNS S31260NSSMC-NAR-DP-3W ASTM(ASME) UNS S39274, ASME Code Case 2427 (Plate & Sheet)
plate, sheet, strip
1. Sea water-proof parts, Sea water pump, Sea water heat exchanger
2. Chemical processing tank, food processing tank containing with chloride
3. Paper making and pulp production system
4. Anti-stress corrosion cracking parts5. Umbilical piping, Flow line
Width(mm)
Thickness(mm)
1,000 2,000 3,000
9600.4DP-3W
1,524
1,000
1,219
60.0
30.0
20.0
3.0
Duplex stainless steel with excellent corrosion resistance to urea-carbamete.ASTM(ASME) UNS S32808ASME Code Case 2496-1(ASME SECTION Ⅷ Div.1 & 2)
plate, sheet
urea plants, chamical plant
1,000 2,000 3,000
1,524
1,00060.0
Width(mm)
Thickness(mm)
1,219
20.0
30.0
3.0
Cr (%)
Corrosion rate in caustic soda(170℃ 48%-NaOH,76hr)
Corrosion rate in urea-carbamate solution
DP-28W DP-12 316L-UG
1.5
1.0
0.5
0
SUS316L
DP-28W
25Cr-7Ni-4Mo-0.3N
SUS329J4L
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
015 20 25 30
Corrosion rate (mg/cm2・hr)
Relative Corrosion rate
1. Excellent resistance to general corrosion in urea-carbamate solutions.2. Excellent resistance to nitric acid.3. Very high mechanical strength.4. High corrosion resistance to alkali solutions.
1. Excellent resistance to corrosion under chloride containing environment.2. Excellent corrosion resistance to high temperature sea water.3. High mechanical strength, especially yield strength, as well as excellent resistance to SCC.4. Corrosion resistance does not deteriorate after welding. Has good weldability very similar to SUS316 in covered electrode welding.
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
C Cr Ni Mo Cu W N
NSSMC-NAR-DP-3N 0.02 25.7 6.9 3.3 0.5 0.4 0.2
NSSMC-NAR-DP-3W 0.02 25.1 6.7 3.2 0.5 2.0 0.3
0.2%Yield strength(N/mm2)Tensile strength(N/mm2) Elongation(%) Hardness(HRB)NSSMC-NAR-DP-3N ≧ 450[646] ≧ 620[857] ≧ 18[35] ≦ 302[266]NSSMC-NAR-DP-3W ≧ 550[669] ≧ 800[894] ≧ 15[36] ≦ 310[270]
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
C Cr Ni Mo W N
0.02 27.4 7.6 0.9 2.2 0.3
0.2%Yield strength(MPa) Tensile strength(MPa) Elongation(%) Hardness(HB)NSSMC-NAR-DP-28W [650] [875] [44] [274]NSSMC-NAR-DP-12 [627] [764] [28] [241]
316L [260] [542] [58]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
1.0
0.8
0.6
0.4
0.2
060
1.0
0.8
0.6
0.4
0.2
0
20 30 40 50 70 80Temperature (℃)
DP-3W
DP-3N
DP-3
Pitting Corrosion Potential (vs. SCE)
Pitting Corrosion Potential (vs. SCE)
Effect of temperature on pitting corrosion potential(Sythetic sea water, Deaerated 20mV/min.)
Cr+3(Mo+0.5W)+10N (%)Pitting corrosion potential of various stainless steel and high Cr-Ni alloys
(Sythetic sea water: ASTM-D1141, Deaerated, 80℃, 20mV/min.)
90 100
62529-4
254SMOAC-3AC-420-25-6
25-4-4
20-25-4.5Cu25520-25-5
447J1825
316L
444304
DP-8(329J3L)XM27
329J1DP-1(18-5-3)
DP-3N
DP-3(329J4L)
DP-3W
: Austenite
: Duplex (Cr)-(Ni)-(Mo)
: Ferrite
1.0
0.8
0.6
0.4
0.2
060
1.0
0.8
0.6
0.4
0.2
0
20 30 40 50 70 80Temperature (℃)
DP3W
DP3N
DP3
Pitting Corrosion Potential (V vs SCE)
Pitting Corrosion Potential (V vs SCE)
Effect of temperature on pitting corrosion potential(Sythetic sea water, Deaerated 20mV/min.)
Cr+3(Mo+0.5W)+10N (%)Pitting corrosion potential of various stainless steel and high Cr-Ni alloys
(Sythetic sea water: ASTM-D1141, Deaerated, 80℃, 20mV/min.)
90 100
62529-4
254SHO AC-3AC-420-25-6
25-4-4
20-25-4.5Cu25520-25-5
447J1825
316L
444304
DP8(329J3L)XM27
329J1DP1(18-5-3)
DP3N
DP3(329J4L)
DP3W
: Austenite
: Duplex (Cr)-(Ni)-(Mo)
: Ferrite
■ Welding: Nippon steels & Sumikin Consumable welding Co., Ltd.
SMAWDP3W
GTAWYT-DP3W
GMAWYM-DP3W
FCAWSF-DP3W
Range of consultation Range of consultation
NSSMC Standard(NSSMC-NAR-DP-3N, DP-3W)
NSSMC Standard(NSSMC-NAR-DP-28W)
21 22
plate, sheet
Heat exchange, thermal treatment oven and constituting parts, combustion equipment, and aircraft parts
1,000 2,000 3,000
1,5243.0
30.0
Width(mm)
Thickness(mm)
1. Excellent resistance to oxidation by high temperature up to 1,200℃ .2. Highly resistance to carburization , nitridation and sulphurization.3. Highly resistance to scaling and repeated exposure to oxidizing conditions.
Nickel base alloy with excellent corrosion resistance to high temperature alkali or water oxidization.ASTM(ASME) UNS N06600
Nickel-based alloy with excellent resistance to high temperature oxidization and scaling.JIS NCF601, AMS 5715A, 5870A, ASTM(ASME) UNS N06601
plate, sheet, strip
Muffles for heating furnace, electronic machinery parts, heat exchanger parts, chemical and food processing facilities, carburizing baskets, jigs, nuclear reactor parts, caustic soda manufacturing equipment, heating element
3.0
1,000 2,000 3,000
1,524
1,000
320640
1,219
0.040.08
0.30.4
30.0
Width(mm)
Thickness(mm)
1. NSSMC-NAR-600 is an alloy for use in highly corrosive environments at high temperatures.2. Resists oxidation under temperatures of up to 1,180℃ .3. Great strength and cold workability. The strength increases with cold working.4. Good mechanical properties under low temperature as well as under high temperature.5. Excellent resistance to stress corrosion cracking by chloride ion and to corrosion by high temperature water.6. Highly resistance to high temperature alkalis.
CHEMICALCOMPOSITION(typical example: %)
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES PRODUCT TYPES
APPLICATION APPLICATION
FEATURES FEATURES
AVAILABLE SIZE AVAILABLE SIZE
C max P max S max Cr Ni Fe
0.15 0.030 0.015 15 Bal. 8
C max Si Mn Cr Ni Cu Al
0.10 0.3 0.5 22.5 60 0.2 12
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HRB)
≧ 245[364] ≧ 550[666] ≧ 30[35] ≦ 89[88]
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%)
≧ 195[245] ≧ 550[578] ≦ 30[57]
Usable temperature of NSSMC-NAR-600 in variousenvironment
10
1.0
0.1
0.01
20 40 60 80NaOH (%)
Corrosion rate (g/m2 ・h)
SUS304
SUS316
20-25MTi
25-50MTi
600
Corrosion rate in boiling NaOH solution
Max 1,150℃Max 810℃Max 1,150℃Max 810℃Max 510℃Max 480℃Max 980℃840~ 950℃480~ 560℃840~ 950℃Max 816℃Max 700℃480~ 560℃
Corrosive environment
● Air
Air (sulfurizing)
● CO2 gas
CO2 gas (sulfurizing)
● Chlorine gas
● Hydrogen chloride
● Steam
Carburizing environment
Nitriding environment
Fused salt Neutral salt
NaOH
Liquid metal Na, K (static)
Hg (static)
Usable temperatureConditions
0 50 100 150 200 250 300 350 400 450 500
+250
-25-50-75-100-125-150-175-200-225-250-275-300-325-350
Temperature (℃)Exposure time (h)Exposure time (h)
Results of oxidation tests at 1205℃.Test cycles consisted of 50hr atexposure temperature followed byair-cooling to room temperature.
Results of oxidation tests at 1150℃.Test cycles consisted of 50hr atexposure temperature followed byair-cooling to room temperature.
High temperature characteristic of NSSMC-NAR-601(Results of high temperature tensile strength test)
Oxidation resistance characteristic of NSSMC-NAR-601
0.2%Y.S (N/mm2 )
Weight change (mg/cm
2 )
T.S (N/mm2 )
0 50 100 150 200 250 300 350 400 450 500
+100
-10-20-30-40-50-60-70-80-90-100-110-120-130-140
Weight change (mg/cm
2 )
601
800
600
601
800
600
700
600
500
400
300
200
100
0
400
300
200
100
0500RT 600 700 800 900 1000 1100
Tensile strength
0.2% yield strength
NSSMC Standard(NSSMC-NAR-600)
NSSMC Standard(NSSMC-NAR-601)
23 24
1. Superior to Alloy 800 in corrosion resistance at higher temperatures, also including corrosion resistance with the presence of salt.2. Higher formability and weldability than alloy 800.3. High-temperature strength equal to Alloy 800.4. A fairly high austenitic structure stability is assured by long-time heating process.5. Superior to Alloy 800 in pitting corrosion resistance due to 2% molybdenum content.
1,000 2,000 3,000
1,0001,219
0.31.5
1,5243.0
30.0
Width(mm)
Thickness(mm)
Heat resistant alloy with remarkable strength under high temperature and resistant to carburization, nitriding and oxidation. ASTM(ASME) UNS N08800・N08810
Austenitic stainless steel, specifically developed for uses in corrosive environments at higher temperature.
plate, sheet plate, sheet, strip
Heat exchangers, chemical equipment, heating furnace parts, reaction pipes and parts
Heating Elements (Seethe Heater), Heat Exchangers, Chemical Equipment, Furnace Components, Reaction Pipes and Component Elements
1,000 2,000 3,000
1,0001,219
0.31.5
1,5243.0
30.0
Width(mm)
Thickness(mm)
1. NSSMC-NAR-800 and 800H are iron-nickel-chromium alloys of excellent strength under high temperature, with remarkable resistance to carburization, nitriding and oxidation.
2. Resistance to stress corrosion cracking, S attacks, internal oxidation, high temperature scaling and other types of corrosion in many corrosive environment.
3. Highly ductile due to the stable austenitic structure. Occurrence of harmful σ phase is minimal under the long-term use in the 650~ 870℃ temperature range.
4. Compared with NSSMC-NAR-800, NSSMC-NAR-800H has greater strength under temperature of over 620℃ , and superior rapture strength in the 590~ 980℃ temperature range.
CHEMICALCOMPOSITION(typical example: %)
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES PRODUCT TYPES
APPLICATION APPLICATION
FEATURES FEATURES
AVAILABLE SIZE AVAILABLE SIZE
C max P max S max Cr Ni Al Ti
NSSMC-NAR-800 0.10 0.030 0.015 21 32 0.3 0.5
NSSMC-NAR-800H 0.05~ 0.10 0.030 0.015 21 32 0.3 0.5
C max Si Mn P max S max Cr Ni Mo
0.03 1.0 0.3 0.03 0.015 21.0 19.8 2.0
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HRB)NSSMC-NAR-800 ≧ 205[315] ≧ 520[565] ≧ 30[44] ≦ 89[82]
NSSMC-NAR-800H ≧ 175[256] ≧ 450[547] ≧ 30[49] ≦ 86[76]
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HV)
≧ 205[279] ≧ 520[583] ≧ 30[48] ≦ 182[139]
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
00
8
5 6 7 8
9 10 11 12 13 14 15
15
10
5
2
4
6
8
10
12
10 20 30 40 50Ni (%)
Temperature × 100°F
Chart of allowable tensile stress
(From ASME SECTION VIII)
× 100℃
Ni %
Type 446
800
800
800H
25Cr-20NiInconel60060Ni
15Cr
Type 310
(Test location) : outlet of an ammonia pre-heater(Test temperature) : 500℃ (Duration of test) : 1,540 hours(Composition of gas) : 99.1% ammonia gas +0.9% inert gas
Results of plant test on nitriding of stainless steels andNickel-base alloys
Type 309
Corrosion rate (mm/y)
(kgf/mm2 )
Allowable tensile stress
× 1000PSi
60 70 80 90 100
Polished surfaceOxidized surface
Test conditions:One cycle (Test sample immersed in soy sause for 3 min. then heated in air at 750℃ for 15 min.)Repeated × 45 Times.*Corr osion Depth ( t) = Original Test SampleThickness (t0) - Corr osion-fr ee Thickness (t1)
Mechanical properties at higher temperatures
800℃
Steel TypesElongation
(%)
Tensile Strength
0.2% YieldStrength
58.019083AH-1
63.4193105Alloy 800
67.8184106Alloy 600
Corrosion test results obtained fromrepeated immersion in soy sauce followedby heating to high temperature
Corr osionDepth*(mm)
Variations inWeight
(mg/cm 2 )
SteelTypes
0.72- 179.5AH-1
1.28- 306.3Alloy 800
0.15- 43.9Alloy 600
0.86- 212.3SUS 316
1.90- 577.2SUS 304
t0 = 2.0mmt0t1
(N/mm2) (N/mm2)
NSSMC Standard(NSSMC-NAR-800, 800H)
NSSMC Standard(NSSMC-NAR-AH-1)
25 26
Heat -resistant austenitic stainless steel with excellent mechanical properties at high temperature. ASTM, UNS S31060, ASME Code Case 2430
plate, sheet, strip
1. Parts requiring heat resistance in Industrial Furnace, Heat-treating Furnace, Power Plant and Chemical Plants
2. Fuel cell reforming Tube3. Car (Exhaust Manifold etc.)4. Subsutitute for SUS310S. Especially
suited for material requiring high-temperature mechanical strength
1. Further improvement of mechanical strength and creep strength at high temperature as conpared with SUS310S (JIS G4304).2. Excellent oxidation registance at 900~ 1000℃ superior to SUS310S.3. Superior structure stability, lessdecline of toughness than SUS310S, after long-time exposure to high temperature (700~ 900℃ ).4. Reasonably designed chemical composition, cost performances are higher than SUS310S.
1,000 2,000 3,000
1,524
1,2190.3
6000.1
3.0
6.0
40.032.0
1,000
Width(mm)
Thickness(mm)
Heat-resistant austentic stainless steel with exellent mechanical properties and oxidation resistance of high temperature and high humidity.
plate, sheet, strip
Heat ExchangersSteam reformerFurnace Compornent
1. Excellent mechanical properties equivalent to NSSMC-NAR-AH-4 at high temperature.2. Excellent oxidation resistance at high humidity atomosphere.
Scale formation after high-temperature oxidation
AH-7
SUS 310S
Oxidation resistance at high humidity gas
Test Temperature(℃)
※After heated at 900℃ x 500hr in 3%O2-9%CO2-16%H2O-bal.N2 conbustion exhaustgas.
after 500hr15
10
5
0700 800 900 1000
SUS310S
SUSXM15J1
AH-7weight gain (mg/cm2・hr)
1,000 2,000 3,000
1,0000.1
1,5243.0
30.0
Width(mm)
Thickness(mm)
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
C Si Cr Ni N La+Ce Other
0.05~ 0.10 0.3 23.0 11.0 0.2 0.04 B add
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HB)
≧ 280[351] ≧ 600[665] ≧ 40[52] ≦ 95[88]
CHEMICALCOMPOSITION(typical example: %)
MECHANICALPROPERTY
[typical example]
PRODUCT TYPES
APPLICATION
FEATURES
AVAILABLE SIZE
C Si Cr Ni N La+Ce Nb
0.04~ 0.10 0.3 26.2 17.5 0.2 0.03 0.1
0.2%Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%)
≧ 280[422] ≧ 600[764] ≧ 35[42]
150
AH-4Aging time: 3000h
Test piece: 2mm V-notch half sizeTest temperature: room temperature
SUS310S
100
50
00
10
10
50
5
20
30
600 700 800
Aging temperature (℃)
Impact value (J/cm2 )
weight increase by oxydation (g/m
2 )
stress (MPa)
Charpy impact propartiesafter aged at 700-900℃
AH-4 SUS310STime to rapture (h)
Continuous oxidation test resultCreep rupture properties
900 1000900 900102 103 104 105 1000 1000 (℃)
900℃ 1000℃AH-4
Designation
SUS310S
Range of consultation
NSSMC Standard(NSSMC-NAR-AH-4)
NSSMC Standard(NSSMC-NAR-AH-7)