P R O D U C T D A I A S H

UNS S41000

AK Steel

AK Steel Type 410 is a martensitic stain-less steel that provides good corrosion resistance plus high strength and hard-ness. It is magnetic in both the annealed and hardened conditions. A wide range of properties can be developed with different heat treatments.

Applications requiring moderate corro-sion resistance and high mechanical properties are ideal for this alloy. Typi-cal uses include flat springs, knives, kitchen utensils and hand tools.

COMPOSITION %

Carbon Manganese Phosphorus Sulfur Silicon Chromium

0.15 max. 1.00 max.

0.040 max. 0.030 max. 1.00 max.

11.50-13.50

AVAILABLE FORMS AK Steel produces Type 410 Stainless Steel in coils and cut lengths in thick-nesses 0.010" to 0.145" (0.25 mm to 3.68 mm) and widths up to and includ-ing 26" (660 mm).

SPECIFICATIONS AK Steel Type 410 Stainless Steel sheet and strip is covered by the following specifications:

AMS 5504 ASTM A 240

MECHANICAL PROPERTIES Typical Annealed Mechanical Properties

Elongation UTS 0.2% YS %tn 2" Hardness

ksi(MPa) ksi(MPa) (50.8 mm) Rockwell

75(517) 45(310) 25

Fatigue Strength*

B80

Test Temperature Endurance Limit ksi(MPa)-107 cycles

70(21) 58.0(400) 700(371) 49.0(338) 850 (454) 43.5 (296) 1000(538) 27.0(186)

Heat treated to 110 ksi (758 MPa) YS.

PHYSICAL PROPERTIES Density, 0.28 lbs/in3

7.74 g/cm3

Electrical Resistivity, microhm-in (microhm-cm) 70 f (21 C)- 22.50 (57)

Specific Heat, BTU/lb/F (kJAg-K) 32-212F (0-100C)-0.11 (0.46)

Thermal Conductivity, BTU/hr/ft2/ft/F (W/mK) at212F(100C)-14.4 (24.9) at932F(500C)-16.6 (28.7)

Coefficient of Thermal Expansion, in/in/F (|im/mK) 32 - 212F (0 -100C) - 5.5 x 1 (r6 (9.9) 32 -1200F (0 - 649C) - 6.5 x 10* (11.6)

Modulus of Elasticity, ksi (MPa) 29x 103(200x 103)

CORROSION RESISTANCE AK Steel Type 410 provides good corro-sion resistance to air, water and some chemicals. It shows satisfactory resis-tance to nitric acid, concentrated sulfu-ric acid, dilute acetic acid and naptha. Resistance to food acids is good.

410-S-8-01-07

Chemica l Compos i t i on (AISI) c Mn Si P S % 7 . % % %

.15 max 1.00 max 1.00 max .040 max .030 max Cr Ni Mo Se Zr % % % % %

11.5/13.5 - - -T i C b A! % %

C h a r a c t e r i s t i c s . Low-priced, general purpose, heat-treatable stainless steel. It can be cold worked and otherwise fabricated fairly well. Its resistance to atmospheric corrosion, water and sonic chemicals is good and is improved by heat treatment.

P h y s i c a l P roper t i e s

Density, at 70F B t u / l b / F , 32-212 Specific heat, B t u / l b / F (32-212) Specific resistivity, microhm/cm1 Magnetism, annealed

0.279 lb/cu in. (7.75 S.G.) 0.1 1 57 or 22.7/in. 1 Ferromagnetic

Therma l Conduc t i v i t y

B t u / f t V h r / f t / F at 212F 14.4 39 2F 15.0 572F 15.5 752F 16.1 932F 16.6

T e c h n o l o g i c a l P roper t i e s Forging temp Annealing temp Hardening temp Tempering temp Melting point M achinabiliry S'eldability Scaling temp, oxidizing Draw ability

2100 to 1650F 1200 to 1250 F , AC 1750 to 1825 F, OQ 400 to 1200 F 2700 to 2750 F or 1480 to 15 10C Fair Fairneeds precautions 1300 F Fair

Coef. of Therma l E x p a n s i o n

Temp R inge

32-212F 0-100C -600 F -1000F -1200F -1800F

-316C -538C -649C -982C

Coeffi per deg F

5.5. 6.1' 5.6 6.4, 7.2' 6.5 7.6'

:ient x jo'4 per deg C

9.9. 10.9' 10.1 1 1.5. 13.0' 11.7 13.7'

ASTM Technical Publication No. 52A

M e c h a n i c a l P r o p e r t i e s

YieM T ensile Stre-.f.h Eler.f Red Impact Resist .

T e n Strength M ; i 2 in. Area Hard Rock Izod Form or Condition Temp M ps i 0.2'", = ffset B H N Hard Ft Lb

Sheet, s t r i p , \d - 65-75 35-40 25-35 "0 150-155 B-80 to B-82 90 pla te , bars > heat treated 1 10 min t 23 65 225 B-97 75 ) tempered & c o l d drawn 100 min 55 17 60 205 B-94 70-90

Effect of T e m p 70 F 89 - _ _ _ _ Effect of T e m p 200 S3 - - - - _ _ 300 ~9 - _ _ _

4 00 76 - -_ _ _

500 74.5 _ _ _ r.oo 73 _ _ _ 700 "I - - - _ _ _ 800 66 - - _ _ 900 55.5 - _ _ _ 1000 44.5 - - _

_ 1100 33 - _ _ _ _ 1200 22 - - - - 1300 13.5 - 1400 9 - _ 1500 9 . - - _ _ _ 1600 9.5' -

_ _ 1700 9 - _ _ 1800 7 _ _ 1900 5.5 - _ _ -2000 4.5 _ _ 2190 3 _ _ 2200 2.5 - - - _ 2300 1.5 - _ _ 2400 0.5 - - - - - -' F e r r i t e ' austenite transformation

Modulus of e l a s t i c i t y , E i n p s i 29.0 x 10_* in tens ion

Creep Strength (M pai) Stress for 1% creep in

Temp 10,000 hr 100,000 hr 1000F 11 .9 .2 ' 10 1100 4.5. 4.2' 3.7 1200 2 1.3 1300 1-3. 1.0' 0.8 1350 _ 1400 _ _ 1500 _ 1600 -'ASM Metals Handbook

Fat igue Strength ' E . L . 10'cycles

Temp M psi 70F 58

700 49 850 43.5

1000 27.2

'Comp: 12.3 Cr, 0.38 N i . .10C. .29 Mn Ann. 5 hr 1 17S. F C . 570 F. A C TS 1 1 1.700 ps i

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