short name: ro* - heco...gost-x 16 crnisi 25 2 x 22 crni 25 20-x 6 crniti1811 uni z 8 nc 32-21 z 12...
TRANSCRIPT
technical product sheet
short name: RO*welded tube, not annealed
DIN 2463/17457
Art.-Nr.kgsD
RO-042-032
RO-042-030
RO-042-020
RO-040-030
RO-038-010
RO-036-030
RO-035-015
RO-034-010
RO-033-032
RO-033-030
RO-033-020
RO-033-010
RO-032-010
RO-030-030
RO-030-020
RO-030-010
RO-028-010
RO-027-010
RO-026-030
RO-026-020
RO-026-010
RO-025-020
RO-025-015
RO-022-020
RO-022-010
RO-021-026
RO-021-020
RO-021-010
RO-020-020
RO-020-010
RO-018-010
RO-017-020
RO-017-010
RO-016-020
RO-015-010
RO-012-010
3,186
3,100
2,023
2,779
0,926
2,486
1,258
0,826
2,444
2,300
1,588
0,804
0,800
0,000
1,402
0,726
0,676
0,650
1,800
1,247
0,725
1,160
0,883
1,002
0,526
1,217
0,967
0,500
0,901
0,476
0,426
0,770
0,401
0,000
0,347
0,394
3,2
3,0
2,0
3,0
1,0
3,0
1,5
1,0
3,2
3,0
2,0
1,0
1,0
3,0
2,0
1,0
1,0
1,0
3,0
2,0
1,0
2,0
1,5
2,0
1,0
2,6
2,0
1,0
2,0
1,0
1,0
2,0
1,0
2,0
1,0
1,0
42,4
42,4
42,4
40,0
38,0
36,0
35,0
34,0
33,7
33,7
33,7
33,0
32,0
30,0
30,0
30,0
28,0
27,0
26,9
26,9
26,0
25,0
25,0
22,0
22,0
21,3
21,3
21,3
20,0
20,0
18,0
17,5
17,0
16,0
15,0
12,0
1/11created 10.06.2020 03:06
Art.-Nr.kgsD
RO-406-080
RO-355-030
RO-323-080
RO-323-030
RO-273-060
RO-273-030
RO-219-060
RO-219-040
RO-219-030
RO-210-030
RO-204-030
RO-168-080
RO-168-060
RO-168-030
RO-162-060
RO-159-040
RO-139-040
RO-139-030
RO-139-026
RO-133-040
RO-133-030
RO-116-060
RO-114-030
RO-101-080
RO-101-040
RO-101-030
RO-101-020
RO-088-030
RO-088-020
RO-082-030
RO-076-036
RO-076-030
RO-076-020
RO-076-015
RO-070-020
RO-068-015
RO-065-020
RO-064-020
RO-063-030
RO-060-050
RO-060-030
RO-060-020
RO-060-030
RO-055-030
RO-055-010
RO-052-010
RO-051-030
RO-050-030
RO-050-010
RO-048-030
RO-048-020
RO-048-015
RO-045-015
RO-044-029
RO-044-030
RO-043-015
RO-043-010
78,300
26,600
63,480
24,180
40,110
20,290
32,118
21,613
16,285
15,550
10,150
33,620
24,460
12,547
0,000
15,525
13,592
10,300
8,925
15,574
9,800
0,000
8,365
21,450
9,800
0,000
4,988
6,473
4,366
0,000
6,535
5,320
3,722
2,820
3,405
2,505
3,165
3,105
4,000
6,920
4,255
2,929
4,255
3,918
1,339
1,277
3,768
3,531
1,227
3,400
2,319
1,877
1,612
3,127
3,100
1,560
1,055
8,0
3,0
8,0
3,0
6,0
3,0
6,0
4,0
3,0
3,0
3,0
8,0
6,0
3,0
6,0
4,0
4,0
3,0
2,6
4,0
3,0
6,0
3,0
8,0
4,0
3,0
2,0
3,0
2,0
3,0
3,6
3,0
2,0
1,5
2,0
1,5
2,0
2,0
3,0
5,0
3,0
2,0
3,0
3,0
1,0
1,0
3,0
3,0
1,0
3,0
2,0
1,5
1,5
3,0
3,0
1,5
1,0
406,4
355,0
323,9
323,9
273,0
273,0
219,1
219,1
219,1
210,0
204,0
168,3
168,3
168,3
162,0
159,0
139,7
139,7
139,7
133,0
133,0
116,0
114,3
101,6
101,6
101,6
101,6
88,9
88,9
82,5
76,1
76,1
76,1
76,1
70,0
68,0
65,0
64,0
63,0
60,3
60,3
60,3
60,0
55,0
55,0
52,0
51,0
50,0
50,0
48,3
48,3
48,3
45,0
44,5
44,0
43,0
43,0
2/11created 10.06.2020 03:06
Art.-Nr.kgsD
Installation supplies › tubes › round › welded › special materials › heat-resistant
available material: 1.4828
3/11created 10.06.2020 03:06
30.0-34.0
19.0-22.0
19.0-22.0
11.0-13.0
9.0-12.0
Ni %
19.0-23.0
24.0-26.0
24.0-26.0
19.0-21.0
17.0-19.0
Cr %
0.15-0.6
Al %
0.020
0.030
0.030
0.030
0.030
S max
0.030
0.045
0.045
0.045
0.045
P max
2.0
2.0
2.0
2.0
2.0
Mn max.
≤1.0
1.5-2.5
≤0.75
1.5-2.5
≤1.0
Si %
≤0.12
≤0.20
≤0.15
≤0.20
≤0.12
C %
1.4876
1.4841
1.4845
1.4828
1.4878
Material
Table 2
Chemical Composition
1100°C
1150°C
1050°C
1000°C
850°C
Temperature*
1.4876
1.4841
1.4845
1.4828
1.4878
Material
X 10 NiCrAlTi 32 20
X 15 CrNiSi 25 20
X 12 CrNi 25 21
X15 CrNiSi 20 12
X12 CrNiTi18 9
Type of Steel
Table 1
Scaling Resistance in the Air
reaction conditions and cannot be determined using any test method.
temperatures above approximately 550°C. The level of their resistance depends enormously on the
resistance to the effects of hot gases and combustion products as well as molten salt and metal at
loading due to their higher alloy content of chromium, nickel, silicon, and aluminium and with special
Heat-resistant steels are steels possessing good mechanical properties for short and long-term
Characteristics of heat-resistant steels
In the form of pipes, they are used in the construction of heat exchangers, for example.
Heat-resistant steels were specially developed for use at high temperatures.
Pipes made of austenitic, heat-resistant steels
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to that during carburization.
For reductive combustion gases containing nitrogen, the behavior of the steel is similar
.....
sensitive than the corresponding ferritic chromium steels.
The austenitic chromium-nickel steels, especially those with a high nickel content, are less
element as a mixed crystal, which is indicated by a reduced scaling resistance.
steels can occur. In this case, bonding with chromium can result in the depletion of this
When exposed to incompletely combusted gases, carburization of the heat-resistant
....
above the nickel-nickel sulfide eutectic point, which is approx. 640°C.
due to the formation of sulfide. Alloys with high nickel contents can exhibit strong scaling
In complete combusted, sulfurous gases, though, the scaling limit is significantly reduced
when a surplus of air is available.
In combustion gases containing sulfur, there is no significant impact on the scaling resistance
...
must be taken into account depending on the composition of the gas.
For completely combusted, sulfur-free gases, a reduction of the scaling resistance by 100 to 200°C
sulfur-free combustion gases. For high water vapor contents, the actual scaling limit may be lower.
The scaling limit temperatures specified in Table 1 apply to air and are an approximation for
..
on the prevailing conditions and may have correspondingly different reaction rates.
a technical standpoint. The reactions can occur individually or simultaneously depending
other solid or molten deposits are particularly important for the scaling resistance from
Oxidation, sulfurization, carburization, nitrogenization, and reactions with ashes and
.
Additional additives, especially of aluminum and silicon, provide additional protection.
protective top layer consisting primarily of chromium oxide.
The scaling resistance the high-alloyed chromium-nickel steels is achieved using a
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(*)=Manufacturer's Code Schöller-Bleckmann Böhler
H500
H525
H522
H550
A700
SBB*
ChN 32 T
20 Ch 25 N 20 S
-
20 Ch 20 N 14 S
12 Ch 48 N 10 T
GOST
-
X 16 CrNiSi 25 2
X 22 CrNi 25 20
-
X 6 CrNiTi1811
UNI
Z 8 NC 32-21
Z 12 CNS 25-20
Z12 CN 25-20
Z15 CNS 20-12
Z 6 CNT 18-10
AFNOR
-
314
310S
309
321
AISI
1.4876
1.4841
1.4845
1.4828
1.4878
Material
Table 3
Comparison of Standards
values provided in Table 4.
stressed. When calculating for systems, you must use the creep strength and elongation time
Heat-resistant steels are generally used at temperatures at which the material creeps when
..
expect a stronger reaction.
condense. If this condensate contains sulfurous acid or sulfuric acid, then you must
When starting up and shutting down systems and during downtimes, combustion products may
.
Nickel and silicon Improve the carburization resistance.
improve resistance against sulfidation.
Sulfidation is increased the most by hydrogen sulfide. Aluminum and silicon
alkaline sulfates, phosphates, metals and/or heavy metal oxides are present.
composition of the deposits and are generally very low, for example like when
the material. The permissible temperature limits depend greatly in this case on the
due to reaction with the scale layer, which quickly leads to the destruction of
For deposits from the combustion gases, low-melting eutectics can form on the steel
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The Ω phase can be dissolved again by annealing at temperatures > 900°C.
The Ω phase is only relevant in actual practice for 1.4821 and 1.4841.
temperature. Si and Cr promote these precipitation processes, while Ni and Al hinder them.
temperatures, but that can cause the material to become brittle after cooling down to room
transition metals that do not exhibit any non-permissible changes to the ductility at operating
to 900°C. The Ω phase is a brittle, intermetallic compound between iron and chromium and other
In austenitic steels with higher Cr content, the Ω phase can form the temperature range from 550
(**)=The values apply to sample thicknesses ≥ 3 mm.
(*)=0.2% elastic limit
The values apply to cold formed pipes with wall thicknesses of 0.5 to 5 mm
min. 30%
min. 30%
min. 35%
min. 30%
min. 40%
(L0=5Da longitudinal
Fracture Elongation
500-750
550-800
500-750
500-750
500-750
(N/mm²)
Tensile Strength
min. 210
min. 230
min. 210
min. 230
min. 210
(N/mm²)
Elastic Limit*
139-190
150-210
130-190
150-210
130-190
(HB)
Hardness
1.4876
1.4841
1.4845
1.4828
1.4878
(Material)
Type of Steel
Table 4
Mechanical Properties
The behavior of the material at the operating temperature is generally not affected by this.
ranges that, after cooling down to room temperature, can lead to a reduction of the ductility.
When using heat-resistant steels, you must expect changes in the material in certain temperature
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(*)=The stress, based on the initial diameter, that leads to breakage after 1,000, 10,000 or 100,000 h.
4 N/mm²
19
47
114
3
7
18
80
3
7.5
16
65
10
22
65 N/mm²
for 100,000h
11 N/mm²
30
68
152
8.5
18
40
160
8.5
18
36
120
20
45
115 N/mm²
for 10,000h
20 N/mm²
45
90
200
15
35
80
230
15
35
75
190
35
80
185 N/mm²
for 1,000h
900 °C
800 °C
700 °C
600 °C
900 °C
800 °C
700 °C
600 °C
900 °C
800 °C
700 °C
600 °C
800 °C
700 °C
600 °C
Temperature
1.4876
1.4841
1.4828
1.4878
Material
Table 6
Creep Strength*
after 1,000 or 10,000 h
(*)=The stress, based on the initial diameter, that leads to a permanent elongation of 1%
5 N/mm²
15
40
90
5.7
12
37
105
4
10
25
80
10
30
85 N/mm²
for 10,000h
13 N/mm²
30
70
130
10
23
53
150
8
20
50
120
15
45
110 N/mm²
for 1,000h
900 °C
800 °C
700 °C
600 °C
900 °C
800 °C
700 °C
600 °C
900 °C
800 °C
700 °C
600 °C
800 °C
700 °C
600 °C
Temperature
1.4876
1.4841
1.4828
1.4878
Material
Table 5
1% Elastic Limit*
Characteristic values of the long-term behavior at high temperatures
created 10.06.2020 03:06 8/11
(***)=Specific electrical resistance for (O x mm²) : m
(**)=J : (g x °C)
(*)=g/cm³
1.00
0.90
0.85
0.85
0.75
p***
0.50
0.50
0.50
0.50
0.50
Specific Heat**
8.0
7.9
7.9
7.9
7.9
Density*
1.4876
1.4841
1.4845
1.4828
1.4878
Material
Table 9
Other Characteristic Values
(W) : (cm x °C)
0.19
0.19
0.19
0.21
0.21
500°C
0.12
0.14
0.14
0.15
0.15
20°C
1.4876
1.4841
1.4845
1.4828
1.4878
Material
Table 8
Thermal Conductivity
(10⁻⁶ mm) : (m x °C)
18.50
19.00
19.00
19.50
-
...1000°C
17.50
18.00
18.00
18.50
19.00
...800°C
16.00
17.00
17.00
17.50
18.00
...400°C
1.4876
1.4841
1.4845
1.4828
1.4878
Material
Table 7
Average linear coefficient of expansion between 20°C and ...
Physical Properties
created 10.06.2020 03:06 9/11
the cutting depth and cutting speed.
at the cutting depth more difficult, requires the use of sharper tools and the correct specification of
conductivity. Its strong cold hardening behavior, which can make the use of dull tools or machining
When machining austenitic steels, adequate cooling must be ensured due to their low thermal
.....
in air or inert gas.
In solution annealing, the steel is cooled in water or air, and for thinner walls,
In terms of cutting operations over the quenched state.
Annealing the austenitic steels at 900°C air temperature offers advantages
....
effects can be undone through subsequent heat treatment with fast quenching.
cold forming properties. After very strong deformation, the resulting cold hardening
Due to their low yield strength and high elasticity, austenitic steels have good
...
The hot forming temperature is 1150 - 800°C.
austenitic steels.
It should only be necessary in a few cases for the user to hot-form the heat-resistant
..
due to its tendency to become brittle in the Ω phase.
The material 1.4841 should not be used in continuous operation at temperatures below 900°C
and nitrogenization in comparison to ferritic steels.
non-oxidizing atmospheres. On the other hand, they have better resistance to carburization
Due to the NI content, these steels are more sensitive to sulfurous gases, especially in
.
comparatively high.
and aluminum so that the long-term values for this material at temperatures over 600°C are
The high temperature strength of the material 1.4876 is improved through the addition of titanium
a high mechanical strength is required in addition to scaling resistance.
to their good scaling resistance. For this reason, they can generally be used for purposes in which
Heat-resistant austenitic CrNi steels are characterized by a high temperature strength in addition
Processing
created 10.06.2020 03:06 10/11
heat-resistant pipes. Acceptance is performed according to Steel-Iron Material Data Sheet 470.
An acceptance test certificate according to DIN 50049/3.1 can be made available for the
Acceptance
welded pipes with dimensions and tolerances based on DIN 2462 and DIN 2463.
We supply seamless hot-rolled and cold-processed pipes made of heat-resistant steels as well as
Product Range
2.4806/2.4807
1.4842
1.4842
1.4829
1.4551/1.4829
Electrode or Welding Rod
1.4876
1.4841
1.4845
1.4828
1.4878
Base Metal
Table 10
Filler Metals
Preheating and heat treatment after welding is generally unnecessary.
Sulfurous oven gases, due to the formation of low-melting corrosion products.
Welding slag must be removed. Its presence will lead to high removal rates, especially for
over gas fusion welding.
suitable for welding using all of the known methods. However, arc welding should be preferred
The heat-resistant austenitic steels are, assuming the corresponding qualifications are available,
Welding
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