A.1/3
B.1/4
C.1/5
D.1/6
A.公称屈服强度(上屈服强度RHL,公称)
B.公称屈服强度(下屈服强度ReL,公称)
C.规定非比例延伸0.2%的公称应力(PP0.2,公称)
D.规定非比例延伸0.0048d的公称应力(PPf,公称)
E.规定非比例延伸0.0054d的公称应力(PPf,公称)
A.20HV
B.25HV
C.30HV
D.35HV
A.GB/T230.1-2018
B.GB/T231.1-2018
C.GB/T232-2010
D.GB/T4340.1-2009
A.20MnTiB
B.ML20MnTiB
C.35VB
D.35GrMo
E.40Gr