| ASTM - American Society for Testing and Materials | AMS - Aerospace Material Specification |
| AISI - American Iron and Steel Institute | IC - Investment Casting Institute |
| MIL - Military Specification | SAE - Society of Automotive Engineers |
| ACI - Alloy Casting Institute | IN - International Nickel |
| QQ - Federal Specifications |
| Chromium Stainless Steels | |||||||||||||
| Alloy | Specification | Carbon Min-Max | Manganese Min-Max | Silicon Min-Max | Chromium Min-Max | Nickel Min-Max | Molybdenum Min-Max | Phosphorus Min-Max | Sulfur Min-Max | Iron | Other | Melting Range 0F | |
| 416 | AMS 5349B Type 1 | .15 | 1.25 | 1.50 | 11.5 -14.0 | .50 | .50 | .04 | .15- .35 | Bal. | Cu, .50 Max.; Al, .05 Max.; Zr, .50 Max.; Sn, .05 Max. |
2700-2790 | |
| MIL-S-81591 IC 416 | a) | .15 | 1.25 | 1.50 | 11.5 -14.0 | .50 | .50 | .04 | .03 | Bal. | Cu, .50 Max.; Se, .10- 30; Zr, .50 Max. | 2700-2790 | |
| b) | .05 | .15-.35 | Cu, .50 Max.; Zr, .50 Max. | ||||||||||
| IC 416 | .15 | 1.25 | 1.50 | 11.5 -14.0 | .50 | .50 | .05 | .15- .35* | Bal. | Cu, .50 Max.; Zr, .50 Max.* or Se, .10-.30 | 2700-2790 | ||
| 420 | MIL-S-81591 IC 420 | .15 | 1.00 | 1.00 | 12.0 -14.0 | .04 | .03 | Bal. | 2650-2750 | ||||
| ASTM A-743 GR CA40, ACI CA40 | .20- .40 | 1.00 | 1.50 | 11.5 -14.0 | 1.00 | .50 | .04 | .04 | Bal. | 2650-2750 | |||
| IC CA-40 | .20- .40 | 1.00 | 1.50 | 11.5 -14.0 | 1.00 | .50 | .04 | .04 | Bal. | 2650-2750 | |||
| SAE 51420 (Discontinued) | .15- .40 | 1.00 | 1.00 | 12.0 -14.0 | .04 | .03 | Bal. | 2650-2750 | |||||
| 420 MOD. | ASTM A-743 GR CA-40F | .20- .40 | 1.00 | 1.50 | 11.5 -14.0 | 1.0 | .50 | .04 | .20 - .40 | Bal. | 2650-2750 | ||
| ASTM A-743 GR CA-28MWV | .20- .28 | .50-1.00 | 1.00 | 11.0 -12.5 | ..50-1.0 | .90-1.25 | .03 | .03 | Bal. | W, .90-1.25; V, .20-.30 | 2650-2750 | ||
| 431 | AMS 5353B | .08- .15 | 1.00 | 1.00 | 15.0 -17.0 | 1.5 -2.2 | .50 | .04 | .04 | Bal. | N2 .03-.12; C + N2, .22 Max.; Cu, .50 Max. | 2600-2700 | |
| AMS 5372B | .12- .20 | 1.00 | 1.00 | 14.5 -17.00 | 1.5 -2.25 | .75 | .04 | .04 | Bal. | Cu, .75 Max. | 2600-2700 | ||
| MIL-S-81591 IC 431 | .08- .15 | 1.00 | 1.00 | 15.0 -17.0 | 1.50 -2.20 | .04 | .04 | Bal. | N2 .03-.12; C + N2, .22 Max. | 2600-2700 | |||
| IC 431 | .08- .15 | 1.00 | 1.00 | 15.0 -17.0 | 1.50 -2.20 | .04 | .04 | Bal. | C + N2, .22 Max.; N2 .03-.12 | 2600-2700 | |||
| Alloy | Specification | Carbon Min-Max | Manganese Min-Max | Silicon Min-Max | Chromium Min-Max | Nickel Min-Max | Molybdenum Min-Max | Phosphorus Min-Max | Sulfur Min-Max | Iron | Other | Melting Range 0F |
| 436 | AMS 5354D Greek Ascoloy | .15- .20 | 1.00 | 1.00 | 12.0 -14.0 | 1.80-2.20 | .50 | .04 | .03 | Bal. | Cu, .50 Max.; W, 2.50-3.50 | 2650-2700 |
| 440A | MIL-S-81591 IC 440A | .60- .75 | 1.00 | 1.00 | 16.0 -18.0 | .75 | .04 | .03 | Bal. | 2500-2750 | ||
| IC 440A | .60- .75 | 1.00 | 1.00 | 16.0 -18.0 | .75 | .04 | .03 | Bal. | 2500-2750 | |||
| 440C | MIL-S-81591 IC 440C | .95-1.20 | 1.00 | 1.00 | 16.0 -18.0 | .75 | .35- .75 | .04 | .03 | Bal. | 2500-2700 | |
| AMS 5352C | .95-1.20 | 1.00 | 1.00 | 16.0 -18.0 | .75 | .35- .75 | .04 | .03 | Bal. | Cu, .75 Max. | 2500-2700 | |
| IC 440C | .95-1.20 | 1.00 | 1.00 | 16.0 -18.0 | .75 | .35- .75 | .04 | .03 | Bal. | 2500-2700 | ||
| 440F | IC 440F | .95-1.20 | 1.00 | 1.00 | 16.0 -18.0 | .50 | .75 | .04 | .15- .35* | Bal. | Cu, .50 Max.; *or Se .10-.30 | 2500-2700 |
| 442 | ASTM A-743 GR CB30 | .30 | 1.00 | 1.50 | 18.0 -21.0 | 2.00 | .04 | .04 | Bal. | 2650-2750 | ||
| ACI CB30 | .30 | 1.00 | 1.50 | 18.0 -21.0 | 2.00 | .04 | .04 | Bal. | 2650-2750 | |||
| 446 | ASTM A-743 GR CC50 | .50 | 1.00 | 1.50 | 26.0 -30.0 | 4.00 | .04 | .04 | Bal. | 2650-2750 | ||
| ASTM A-297 GR HC, ACI HC, SAE 70446 |
.50 | 1.00 | 2.00 | 26.0 -30.0 | 4.00 | .50 | .04 | .04 | Bal. | 2650-2750 | ||
| ACI CC50 | .50 | 1.00 | 1.50 | 26.0 -30.0 | 4.00 | .04 | .04 | Bal. | 2650-2750 | |||
| SAE 51446 (Discontinued) | .20 | 1.50 | 1.00 | 23.0 -27.0 | .04 | .03 | Bal. | N2, .25 Max. | 2600-2750 | |||
| 51502 MOD. | ASTM A-217 GR C-12 | .20 | .35- .65 | 1.00 | 8.00-10.00 | .50* | .90-1.20 | .04 | .045 | Bal. | Cu*, .50 Max.; W*, .10 Max. Total S1 |
2700-2790 |