... , 40Cr, 42CrMo, stainless steel, nylon Heat Treatment: Hardening and Tempering, High F Gear for industryMaterial: carbon steel as C45, 20CrMnTi, 40Cr, 42CrMo ... , stainless steel, nylonHeat Treatment: Hardening and Tempering, High Frequency Quenching, Carburizing QuenchingProcess: Investment casting, die casting, gravity casting ...