
Stainless Steel as per ASTM A 351 and 743 comprising of
Heat resistant steel castings
| ASTM A890 | TYPE | UNS | ACI |
| Grade 1A | 25 Cr-5Ni-Mo-Cu | J93370 | CD4MCu |
| Grade 1B | 25 Cr-5Ni-Mo-Cu-N | J93372 | CD4MCuN |
| Grade 1C | 25 Cr-6Ni-Mo-Cu-N | J93373 | CD3MCuN |
| Grade 2A | 24 Cr-10Ni-Mo-N | J93345 | CE8MN |
| Grade 3A | 25 Cr-Ni-Mo-N | J93371 | CD6MN |
| Grade 4A | 22 Cr-5Ni-Mo-N | J92205 | CD3MN |
| Grade 5A | 25 Cr-7Ni-Mo-N | J93404 | CE3MN |
| Grade 6A | 25 Cr-7Ni-Mo-N | J93380 | CD3MWCuN |