25-3030-3535-4040-4545-5050-5555-60130350300200＜160235（甲）520460420350290＜170340（甲）540490430370310＜200445（甲）550520450380320300180550（甲）560530460390330310180660580540460400360310250730Mn490400350300200840Mn540200950Mn5604704103402702101601030Mn2*450400350300＜2001140Mn2*5404203703202702401250Mn2*6004804003001335SiMn*5605204604003502001442Mn2V6005204704303502001530Cr5002001640Cr580510470420340200＜1601745Cr620530480420340200＜1801850Cr650570480400280230＜1801940CrSi*6305505204504003302202030CrMn2*6005004503802802002140CrMn*5805102302002230CrMnSi*6205305004303401802335CrMnSiA*6205305004303602002440CrV6405605004503202002545CrV6405605004503202002650CrV6505605004503802801802730CrMo5604404002002835CrMo6005504804003002002942CrMo6205805004003001803040CrMnMo5505004504002503140CrNi*5805104604203402003237CrNi3A*5705004203003003340CrNiMoA6205805404804203203435CrNiMoA6105705304404003203535CrNi3MoA6305805404804203203630Cr2MoV6305404503735CrMoV640590500360300＜2003838CrSi*6305505204504003303940Cr2MoV6404038CrMoAlA6806305304303202004140B5504504245B6606005004350B4204003602804440MnB*550出炉水冷450回火后硬度与回火温度的关系编号钢号4540MnVB6004604640CrB6205304704304740CrMnMoVBA6205004504845CrNi*570500430360280230＜1604950CrNi*5805204503502702302005065620550500450380300230517062055050045038031023052856205505004503803302505360Mn5505004504005465Mn6606005204403803002305555SiMn5504905660Si2MnA6206005505204704203805750CrMn5805004504003305850CrMnVA5605204304005960Si2CrV4604206055Si2B5004404003603006165Si2WA4206230W4Cr2VA63GCr655050046040030025064GCr955050046041035027065GCr1568058053048042038027066GCr9SiMn42035028067GCr15SiMn48042035028068CrMnSi60056052046040069Cr8WV70065060054045025070T7(A)58053047042037032025071T8(A)58053047042037033225072T10(A)58054049043038034025073T12(A)580540490430380340250749Mn2400340280759Mn2V50040032025076SiMn50043037033077Cr2530600530480420320230789Cr2Mo(W)700工频淬后799SiCr670620580520450380300806CrSi630590530450380280814CrSi630580520430＜25082Cr5805...
