常用钢热处理硬度一览表

参考直径与厚度推荐硬度钢号备注HB压痕直径①V10388-3213.1-3.4①€0321-2693.4-3.735①30-①40285-2293.6-4.0厚度V20板269-2173.7-4.1厚度V40229-1874.0-4.4①V25388-3213.1-3.4表面淬火硬度HRC为840①音召0321-2693.4-3.7①V50285-2293.6-4.0厚度V20板285-2413.6-3.9厚度V40241-2073.9-4.2①V25477-3882.8-3.1表面淬火①音召0388-3213.1-3.4硬度：①V60321-2693.4-3.7①绍00时45①V75285-2293.6-4.0HRC绍0厚度V20板321-2693.4-3.7①<00时厚度V40板285-2293.6-4.0HRC绍5厚度V60板241-2073.9-4.2HRC绍850①音召0477-3882.8-3.1

钢号参考直径与厚推荐硬度备注度HB压痕直径40Cr①W0477-3882.8-3.1表面淬火硬30CrMoA①老0388-3213.1-3.4度35CrMo40Mn2①宅0321-269HRC绍5①冬20285-229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钢号压痕直径ZG35(ZG270-500)参照碳素中碳钢参照碳素中碳钢布氏硬度HB压痕直径ZG35(ZG270-500)参照碳素中碳钢参照碳素中碳钢ZG45(ZG310-570)ZG55(ZG340-640)钢号模数渗碳层厚mm12CrNi3A3.0-4.50.6-0.9表面硬度HRC芯部硬度HRC26-40钢号模数渗碳层厚mm12CrNi3A3.0-4.50.6-0.9表面硬度HRC芯部硬度HRC26-40碳1.75-2.50.5-0.7为418CrNi4WA2.75-3.850.7-1.0为44.50.8-1.1为6伞齿轮m纹.720.8-1.1为635-450.8-1.2药435-4520Cr2Ni4A(12Cr2Ni4A)5-5.51.4-1.7为035-4912Cr2Ni4A:35-451.3-1.671.3-1.7为08-91.3-1.7为01.6-1.91.5-1.820CrMnTi3.5-4.50.9-1.358-6333-48钢号推荐硬度GCr15HRC犬8GCr9HRC犬8钢号模数m渗渗碳层厚mm表面硬度HRC碳氮共12CrNi3A20CrMnTi20Cr<40.5-0.8为6

渗12CrNi3A20CrMnTi20Cr4-6为.6为620Cr2Ni4A<40.5-0.8为812Cr2Ni4A30CrMnTi20Cr2Ni4A4-6为.6为812Cr2Ni4A0.7-0.830CrMnTi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HB38CrSi42CrMo45CrNi①V30477-388表面淬火硬度：HRC绍2HRC绍5HRC绍8齿轮类415-341-H-P-rR//x>388-321带齿发兰盘①V80341-285①<100321-269

①V120302-255①》20285-22930CrMnSiA35CrMnSiA388-302垫圈等321-269摩擦片等285-241套筒拄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HRC悬0285-355弹簧钢钢号推荐硬度HRC备注65冷硬钢丝C6以下708536-42一般用于厚度不大于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