12CrNi2 12CrNi3 20CrNi3 30CrNi3 37CrNi3 12Cr2Ni4 20Cr2Ni4 20CrNiMo 40CrNiMoA 18CrNiMnMoA 45CrNiMoVA 18Cr2Ni4WA 25Cr2Ni4WA
4保证淬透性结构钢和低淬透性结构钢
45H 45AH 15CrH 15CrAH 20CrH 20CrAH 20Cr1H 20Cr1AH 40CrH 40CrAH 45CrH 45CrAH 15CrMoH 15CrMoAH 20CrMoH 20CrMoAH 22CrMoH 22CrMoAH 42CrMoH 42CrMoAH 16CrMoH 16CrMoAH 20CrMnH 20CrMnAH 15CrMnBH 15CrMnBAH