常用钢热处理硬度一览表.doc

钢号参考直径与厚度推荐硬度备注HB压痕直径3510388-3213.1-3.420321-2693.4-3.730-40285-2293.6-4.0厚度20板269-2173.7-4.1厚度40229-1874.0-4.44025388-3213.1-3.4表面淬火硬度HRC3840321-2693.4-3.750285-2293.6-4.0厚度20板285-2413.6-3.9厚度40241-2073.9-4.24525477-3882.8-3.1表面淬火硬度:100时HRC40100时HRC45HRC4840388-3213.1-3.460321-2693.4-3.775285-2293.6-4.0厚度20板321-2693.4-3.7厚度40板285-2293.6-4.0厚度60板241-2073.9-4.25040477-3882.8-3.1钢号参考直径与厚度推荐硬度备注HB压痕直径40Cr30CrMoA35CrMo40Mn230477-3882.8-3.1表面淬火硬度HRC4550388-3213.1-3.480321-269120285-229 合金铸钢钢号推荐硬度范围布氏硬度HB压痕直径ZG32MnMoZG32MnMo1321-2693.4-3.7285-2413.6-3.9255-2173.8-4.1铸钢钢号推荐硬度范围布氏硬度HB压痕直径ZG35(ZG270-500)ZG45(ZG310-570)ZG55(ZG340-640)参照碳素中碳钢参照碳素中碳钢钢号模数m滲渗碳层厚mm表面硬度HRC芯部硬度HRC渗碳12CrNi3A3.0-4.50.6-0.95826-401.75-2.50.5-0.75418CrNi4WA2.75-3.850.7-1.0544.50.8-1.156 伞齿轮m7.720.8-1.15635-450.8-1.25435-4520Cr2Ni4A(12Cr2Ni4A)5-5.51.4-1.76035-4912Cr2Ni4A:35-451.3-1.671.3-1.7608-91.3-1.7601.6-1.91.5-1.820CrMnTi3.5-4.50.9-1.358-6333-48钢号推荐硬度GCr15HRC58GCr9HRC58钢号模数m滲渗碳层厚mm表面硬度HRC碳氮共渗12CrNi3A20CrMnTi20Cr40.5-0.85612CrNi3A20CrMnTi20Cr4-60.65620Cr2Ni4A12Cr2Ni4A30CrMnTi40.5-0.85820Cr2Ni4A12Cr2Ni4A30CrMnTi4-60.65870.7-0.8渗碳钢钢号推荐硬度HB备注18Cr2Ni4WA20Cr2Ni4A375-31118Cr2Ni4WA可制造发动机曲轴变速箱主轴被动轴等20Cr2Ni4A可造齿轮等444-341444-321钢号参考直径与厚度推荐硬度备注HB38CrSi42CrMo45CrNi30477-388表面淬火硬度:HRC42HRC45HRC48齿轮类415-341带齿发兰盘388-32180341-285100321-269120302-255120285-22930CrMnSiA35CrMnSiA388-302垫圈等321-269摩擦片等285-241套筒扥不锈钢钢号推荐硬度HB备注2Cr13302-2553Cr134Cr13341-285表面淬火硬度:支撑衬套HRC50285-355弹簧钢钢号推荐硬度HRC备注65冷硬钢丝6以下8536-42一般用于厚度不大于15的小截面弹簧薄片或垫圈等38-4847-5460Mn36-42制造大尺寸的弹簧板簧发条簧片等40-4865Mn42-50制造大尺寸的弹簧60Si2Mn60SiMnA41-49适用于板簧60SiMnWA41-49大截面重载弹簧70Si3MnA44-52大截面重载弹簧50CrVA40-48大截面