12CrNi2

12CrNi2，高级渗碳钢，淬火加低温回火或高温回火后，均具有良好的综合力学性能，低温冲击韧性度好，缺口敏感性小，可加工性及焊接性尚好，但有回火脆性，白点敏感性较高，渗碳后均需进行二次淬火，特殊情况还需要冷处理。12CrNi2为合金结构钢，执行标准为：GB/T 3077-1988 碳 C ：0.10～0.17
硅 Si：0.17～0.37
锰 Mn：0.30～0.60
硫 S ：允许残余含量≤0.035
磷 P ：允许残余含量≤0.035
铬 Cr：0.60～0.90
镍 Ni：1.50～1.90
铜 Cu：允许残余含量≤0.030
SS330 SS400 SS490 SS540 S09CK S10C S12C S15C S15CK S17C S20C S20CK S22C S25C S28C S30C S33C S35C S38C S40C S43C S45C S48C S50C S53C S55C S58C SM400A SM400B SM400C SM490A SM490B SM490C SM490YA SM490YB SM520YB SM520YC SM570 SPV315 SPV355 SPV410 SPV450 SPV490 SPV235 SGV410 SGV450 SGV480 SB410 SB450 SB480 SB450M SB480M SLA235A SLA235B SLA325A SLA325B SLA365 SLA410 STK290 STK400 STK490 STK500 STK540 SMn420 SMn433 SMn438 SMn443 SMnC420 SMnC443 SCr21   SCr420 SCr430 SCr435   SCr440  SCr445 SCM415 SCM418 SCM420 SCM421 SCM425 SCM430 SCM432 SCM435 SCM440 SCM445 SCM822 SNC236 SNC415 SNC631 SNC815 SNC836 SNCM220 SNCM240 SNCM415 SNCM420 SNCM431 SNCM439 SNCM447 SNCM616 SNCM625 SNCM630 SNCM815 SACM645 SBV1A SBV1B SBV2 SBV3 SQV1A SQV1B SQV2A SQV2B SQV3A SQV3B SEV245 SEV295 SEV345 SL2N255 SL3N255 SL3N275 SL3N440 SL5N590 SL9N520 SL9N590 SCMV1 SCMV2 SCMV3 SCMV4 SCMV5 SCMV6 SCMQ4E SCMQ4V SCMQ5V SCM415TK SCM418TK SCM420TK SCM430TK SCM435TK SCM440TK SCr420TK SNB5 SNB7 SNB16 SNB21-1 SNB21-2 SNB21-3 SNB21-4 SNB21-5 SNB22-1 SNB22-2 SNB22-3 SNB22-4 SNB22-5 SNB23-1 SNB23-2 SNB23-3 SNB23-4 SNB23-5 SNB24-1 SNB24-2 SNB24-3 SNB24-4 SNB24-5