????????????????????Cr5Mo1V????????????A2????й?????????????????????
????C:0.95-1.05
????Si:<=0.5
????Mn:<=1
????S:<=0.03
????P:<=0.03
????Ni<=0.25(?????????)
????Cu<=0.30(?????????)
????Cr??4.75-5.5
????V:0.15-0.5
????Mo:0.9-1.4 ???????<HB255 (??????)
??????????????>HRC60
????ccsa???????(q345e)??????
???????????????????????a??b??c??d4??????????????????????(??????235n/mm^2)???????(4000)??520n/mm^2)???????????????μ??????????
???????????????????????????????????????????????????????????????????????????????a??d??e??f4????
????a32??d32??e32??F32?????????????315n/mm^2????????440??570n/mm^2??a??d??e??f???????????÷??????0??-20??-40??-60???????????????????????
????a36??d36??e36??F36?????????????355n/mm^2????????490??620n/mm^2??a??d??e??f???????????÷??????0??-20??-40??-60???????????????????????
????a40??d40??e40??F40?????????????390n/mm^2????????510??660n/mm^2??a??d??e??f???????????÷??????0??-20??-40??-60???????????????????????????
