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

 

PPT. Hardening 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 Copper Min-Max Iron Other Melting Range oF
14-4 AMS 5340D .06 .70 .50-1.00 13.50-14.25 3.75-4.75 2.0 -2.50 .020 .025 3.00-3.50 Bal. Cb, .15-.35; N2, .05 Max. Ta, .05 Max. 2550-2600
15-5 AMS 5346 .05 .60 .50-1.00 14.00-15.50 4.20-5.00   .025 .025  2.50-3.20 Bal. Cb/Ta, .15-.30; N2, .05 Max. 2560-2625
AMS 5347A .05 .60 .50-1.00 14.00-15.50 4.20-5.00   .025 .025  2.50-3.20 Bal. Cb, .15-.30, N2, Ta, .05 Max. 2560-2625
AMS 5356A .05 .60 .50-1.00 14.00-15.50 4.20-5.00   .025 .025  2.50-3.20 Bal. Cb, .15-.30; Ta, .05 Max. 2560-2625
AMS 5357A .05 .60 .50-1.00 14.00-15.50 4.20-5.00   .025 .025  2.50-3.20 Bal. Cb, .15-.30; N2, .05 Max.Ta, .05 Max. 2560-2625
AMS 5400A .05 .60 .50-1.00 14.00-15.50 4.20-5.00   .025 .025  2.50-3.20 Bal. Cb, .15-.30 Ta, .05 Max 2560-2625
ASTM A-747 CB 7 Cu-2 ACI-CB-7 Cu-2 .07 .70 1.00 14.0 -15.50 4.50-5.50   .035 .03  2.50-3.20  Bal. Cb/Ta, .15-.35; N2, .05 Max. 2560-2625
IC 15-5-PH .05 .60 .50-1.00 14.00-15.50 4.20-5.00   .025 .025   2.50-3.20 Bal. Cb/Ta, .15-.30; N2, .05 Max. 2560-2625

 

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 Copper Min-Max Iron Other Melting Range oF
17-4 AMS 5342C 5344C .06 .70 .50-1.00 15.5-16.7

3.60-4.60

  .025 .025 2.8-3.5 Bal.

Cb/Ta, .15-.40; Al, .05 Max.; N2, .05 Max.; Sn,. .02 Max.

2560-2625
AMS 5343D .06 .70 .50-1.00 15.5-16.7 3.60-4.60   .025 .025 2.8-3.5 Bal. Cb, .15-.40; Al, .05 Max.; N2, .05 Max.; Sn,. .02 Max.; Ta, .05 Max. 2560-2625
AMS 5355F .06 .70 .50-1.00 15.5-16.7 3.60-4.60   .025 .025 2.8-3.5 Bal. Cb, .15-.40; Al, .05 Max.; N2, .05 Max.; Sn,. .02 Max.; Ta, .05 Max. 2560-2625
(ARMCO) .07 1.00 1.00 15.5-17.5 3.00-5.00   .04 .03 3.0-5.0 Bal. Cb/Ta, .25-.45 2560-2625
IC 17-4PH .06 .70 .50-1.00 15.5-16.7 3.60-4.60   .04 .03 2.8-3.5 Bal. Cb/Ta, .15-.40; N2, .05 Max. 2560-2625
ASTM A-747 CB 7 Cu-1 .07 .70 1.00 15.5-17.7 3.60-4.60   .035 .03 2.50-3.20 Bal. Cb, .15-.35; N2, .05 Max. 2560-2625
MIL-S-81591 IC-17-4 .08 1.00 1.00 15.5-17.5 3.00-5.00   .04 .04 3.0-5.0 Bal. Cb/Ta, .45 Max. 2560-2625
CD 4M Cu ASTM A-351 GR CD4MCu,
ASTM A-743 GR CD4MCu,
ASTM A-744 GR CD4MCu,
ASTM A-890 GR 1-A
.04 1.00 1.00 24.5-26.5 4.75-6.00 1.75-2.25 .04 .04 2.75-3.25 Bal.   2550-2600
AM 355 AMS 5368B .08-.15 .40-1.10 .75 14.5-15.5 3.50-4.50 2.00-2.60 .04 .03 2.8-3.5 Bal. N2, .05-.13; C+N2, .15-.25 2500-2550