SCM440H淬透性结构钢

SCM440H(SCM4H) 4140H 4140H 4140H 708H42 SCM445H (SCM5H) 4145H 4145H 4145H SNC631H (SNC2H) 30NC11 SNC815H (SNC22H) 655H13 SNCM220H (SNCM21H) 8620H 8620H 8620H 20NCD2 SNCM420H (SNCM23H) 4320H 4320H 4320H产品特性

1. 铬钼合 钢抗 强 ,韧性,伸长 等均优於铬钢.

2. 含有铬和钼,硬化能大,抗回火软化性优,回火脆性的倾向低.

3. 强韧性.

一般用途

齿 ,轴 ,强 丝,汽机 件等机械 件,如:

塑胶机械---大柱, 杆, 管

锻造业---锻造素材,手工具, 丝 帽

汽机 业---齿 ,轴心,曲轴

热处 操作

1. 退火:830℃ .

2. 正常化:830~880℃空 .

3. 淬火:840~870℃油 .

4. 回火:550~650℃水 .

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