1.2581, H21, X30WCrV93, SKD5鍛造圓鋼
1 2581(H21, X30WCrV93, SKD5) Hot-Work Mould Steel properties:Tungsten-chrome-vanadium steel for hardening in oil and possibly in air with very good hardenability, very high firmness during the heat and resistance to the tempering, high resistance to the