C 15 , Ck 15
14 NiCr14
15 CrNi6
21 NiCrMo2
17 CrNiMo6
15 Cr3
16 MnCr5
16MnCrS5
20 MnCr5
20 MnCrS5
20 MoCr4
20 MoCrS4
25 MoCr4
25 MoCrS4