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* 1.00 Max. 2700-2790