chemical compositions difference between HCHCR STEEL, DIN 1.2379, SKD11 Tool Steel, DIN X165CrMoV12, DIN X155CrMoV12-1, and D2 STEEL material.Virender jindal2022-04-08T08:54:59+00:00 The typical chemical compositions difference between HCHCR STEEL, DIN 1.2379, SKD11 Tool Steel, DIN X165CrMoV12, DIN X155CrMoV12-1, and D2 STEEL material. [table id=107 /]