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| Ferrous Steel Alloys Chart | Close Window |
| Stainless Steel 300/400 Series Alloys | |||||||||||||||||||||
| Alloy | Similar Designation |
Usual Condition |
Castability | Machinability | Corrosion Resistance | Weldability | Hardanable | Density (g/cm3) | As-Cast Tensile Strength (psi) | As-Cast Yield Strength (psi) | As-Cast Elongation (%) | As-Cast Hardness | Annealed Tensile Strength (psi) | Annealed Yield Strength (psi) | Annealed Elongation (%) | Annealed Hardness | Heat Treated Tensile Streangth (psi) | Heat Treated Yield Strength (psi) | Heat Treated Elongation (%) | Heat Treated Hardness | Comments |
| 302 CF-20 (JJ92501) | AMS 5358 ASTM A743 MIL S 81591 |
Solution Annealed | 1 | 4 | 2 | 4 | No | 8 | 65,000 | 30,000 | 35 | HRB 80 | Best Combination castability and corrosion resistance. |
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| 303 CF-16F (J92511) | AMS S341 ASTM A743 MIL S 81591 |
Solution Annealed | 3 | 3 | 2 | 5 | No | 8 | 65,000 | 30,000 | 35 | HRB 80 | Free matching stainless, Not easily welded. |
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| 304 CF-8 (J92600) | ASTM A 743 MIL S 867 MIL S 8159 |
Solution Annealed | 1 | 4 | 1 | 2 | No | 8 | 65,000 | 30,000 | 35 | HRB 80 | Better corrosion resistance than 302 or 303. |
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| 304L CF-3 (J92700) | ASM 5370 ASTM A351 MIL S 22216 |
Solution Annealed | 1 | 4 | 1 | 1 | No | 8 | 63,000 | 30,000 | 35 | HRB 80 | 304 Low Carbon cryogenic applications, Good weldability. |
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| 301 CK-20 (531000) | ASM 5366 ASTM A351 MIL S 22216 |
Solution Annealed | 3 | 3 | 3 | 3 | No | 8 | 60,000 | 30,000 | 35 | HRB 80 | Oxidation resistance to 2000 degrees F (1000 degrees C) Maderate high temperature strength, Very good for thin sections, fine details, and smooth surface finish. |
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| 316 CF-8M(J92900) | ASM 5360 ASTM A 351 MIL S 867 |
Solution Annealed | 1 | 4 | 1 | 3 | No | 8 | 65,000 | 30,000 | 35 | HRB 80 | Excellent corrosion resistance and oxidation to 1600 degrees F (870 degree C) Ofter used for food and paper processing equipment and ship hardware. |
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| 347 CF-8C(J92710) | ASM 5362 ASTM A 351 MIL S 867 |
Solution Annealed | 2 | 3 | 1 | 1 | No | 8 | 70,000 | 32,000 | 30 | HRB 80 | Excellent for welding application, Excellent corrosion resistance. Will work harden |
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| CN-7M (J91150) | ASTM A351 ASTM A743 |
Solution Annealed | 3 | 3 | 1 | 1 | No | 8 | 65,000 | 25,000 | 35 | HRB 80 | Sulfuric add resistant. | ||||||||
| 410 CA-15 (J91150) | AMS 5350 ASTM A217 MIL S 81591 |
Annealed, Quenched and Tempered | 2 | 2 | 3 | 3 | Yes | 7.75 | HRC 25 | 70,000 | 45,000 | 20 | HRB 95 | 180,000 | 140,000 | 8 | HRC 44 | Best Comibination of hardness and corresion resistance. |
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| 416 (S41600) | AMS 5349 | Annealed, Quenched and Tempered | 4 | 2 | 3 | 5 | Yes | 7.73 | HRC 26 | 70,000 | 40,000 | 15 | HRB 95 max |
160,000 | 130,000 | 5 | HRC 30 | Less tough, but a more machinable grade of 410. |
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| 420 CA-40 (J91153) | ASTM A743 MIL S 8159 |
Annealed, Quenched and Tempered | 2 | 3 | 2 | 3 | Yes | 7.75 | HRC 27 | 90,000 | 60,000 | 12 | HRC 30 | 180,000 | 150,000 | 3 | HRC 40/44 | Higher hardness, but less toughness than 401. |
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| 431 CB-30 (J91631) | ASM 5353 ASTM A743 MIL S 8159 |
Annealed, Quenched and Tempered | 3 | 3 | 2 | 3 | Yes | 7.74 | HRC 20 | 130,000 | 80,000 | 15 | HRC 17/25 | 208,000 | 165,000 | 13 | HRC 40/45 | Most resistant to corrosion of any 400 Series Stainless. Used in products requiring high strength and maximum corrosion resistance. |
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| 436 Greek Ascoloy (J91631) | AMS 5354 | Annealed, Quenched and Tempered | 2 | 3 | 1 | 2 | Yes | 7.75 | 128,000 | 80,000 | 13 | HRC 20/30 | 209,000 | 152,000 | 11 | HRC 45/53 | Heat resistance to 1000 degrees F (540 degree C) but has excellent oxidation resistance to 1500 degrees F. (825 degree C). Often substituted for more costly high alloy steels. |
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| 440A (544002) | MIL A 22216 MIL S 91591 |
Annealed, Quenched and Tempered | 2 | 4 | 4 | 5 | Yes | 7.68 | 100,000 | 60,000 | 10 | HRC 28 | 260,000 | 240,000 | 2 | HRC 50/58 | Cutlery and molds. High hardness and ductility. |
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| 440C (544004) | AMS 5352 MIL S 22216 MIL S 81591 |
Annealed, Quenched and Tempered | 3 | 4 | 4 | 5 | Yes | 7.65 | HRC 25 | 90,000 | 60,000 | 8 | HRC 30 | 270,000 | 280,000 | 2 | HRC 58/62 | Best cutery grade. | |||
| Precipitation Hardened Steel Alloys | |||||||||||||||||||||
| Alloy | Similar Designation |
Usual Condition |
Castability | Machinability | Corrosion Resistance | Weldability | Hardanable | Density (g/cm3) | As-Cast Tensile Strength (psi) | As-Cast Yield Strength (psi) | As-Cast Elongation (%) | As-Cast Hardness | Annealed Tensile Strength (psi) | Annealed Yield Strength (psi) | Annealed Elongation (%) | Annealed Hardness | Heat Treated Tensile Streangth (psi) | Heat Treated Yield Strength (psi) | Heat Treated Elongation (%) | Heat Treated Hardness | Comments |
| 15-5 PH (J921100) | AMS 5357 ASTM A747 |
Homogenized, Solution Treated and Aged | 3 | 3 | 2 | 3 | Yes | 7.8 | 160,000 | 130,000 | 8 | HRC 36 max | 200,000 | 185,000 | 14 | HRC 40/45 | Same as 17-4 except greater ductility. |
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| 17-4 PH (J92180) | AMS 5355 ASTM A747 MIL S 81591 |
Homogenized, Solution Treated and Aged | 2 | 3 | 2 | 2 | Yes | 7.8 | 180,000 | 160,000 | 6 | HRC 36 max | 200,000 | 185,000 | 12 | HRC 40/45 | Very good corrosion resistance and hardness. Easily machined. Very popular alloy. |
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| 25-5 PH (J933370) | ASTM A351 ASTM A743 |
Solution Treated and Aged | 3 | 3 | 2 | 2 | Yes | 7.8 | 100,000 | 70,000 | 12 | HRC 30 | HRB 55 | Best combination of strength and corrosion resistance. |
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| Key: | 1 = Excellent 2 = Very Good 3 = Good 4 = Fair 5 = Poor |
| Hardness Scales: | HRB--Rockwell Hardness, B Scale HRE--Rockwell Hardness, E Scale HRC--Rockwell Hardness, C Scale BHN--Brinell Hardness, B Scale |
| No data available -- metal not usually used in this condition |