5CrMnBAH 17CrMnBH 17CrMnBAH 40MnBAH 40MnB 45MnBH 45MnBAH 20MnVBH 20MnVBAH 20MnTiBH 20MnTiBAH 20CrMnMoH 20CrMnMoAH 20CrMnTiH 20CrMnTiAH 20CrNi3H 20CrNi3AH 12Cr2Ni4H 12Cr2Ni4AH 20CrNiMoH 20CrNiMoAH 20CrNi2MoH 20CrNi2MoAH
5易切削钢
Y12 Y12Pb Y15 Y15Pb Y20 Y30 Y35 Y40Mn Y45Ca
6 冷镦和冷挤压用钢
