CmCtw CMC-MS-3 description: As for the special welding wire with low C and high Ni, Co, Mo, the hardness is about HRC35 after welding, and it is very easy for processing. The hardness can reach above HRC50 with aging treatment after molding. The microstructure is Ni-martensite, which has the features of excellent abrasive resistance, cracking resistance and high temperature red hardness. The melting metal is special hardening high tenacity alloy; it is very suitable for making the sprue of the aluminum gravity die-casting mould. It can lengthen the service life of the sprue for 3-5 times, and it is not easy for thermal fatigue; meanwhile it can be used to produce the precise super-faced mould.