德国轴承钢:100CR2 105CR4 100CR6 100CRMNSI6-4 100CRMO7-3 X108CRMO17 X89CRMOV18-1 80MOCRV42-16 X82WMOCRV6-5-4等 德国弹簧钢:C67E C75E CK85 C101E 38SI6 38SI7 46SI7 51SI7 55SI7 65SI7 71SI7 60SIMN5 51MNV7 54SICR6 60SICR7 67SICR5 55CR3 51CRV4 58CRV4 51CRMOV4 45CRMOV6-7 52MNCRB3等