表面淬火用钢:Cf351.1185C35GCF45***5G1.1193CF53C53G1.1213Cf70C70G1.124940MN437MnSi51.512245Cr21.700538Cr41.704342Cr41.704534CrMo41.722041CrMo41.722349CrMo41.723851CrV450Crv41.815958CrV41.816179Ni11.697183Ni11.6972……..)