钢
材
类
别序
号钢 号标准号化学成分%机械性能(不小于)其
它硫
S磷
P抗拉强度
σb
kg/屈服点
σs
kg/延伸率
δs
%冲击值
αb
kg－m/备注不大于钢
板1715MnVYB231－70 0.0500.050544018 1812CrMoYB237－70Cu≤0.300.0400.0404225217 1915CrMoYB237－70Cu≤0.300.0400.0404526216 20Cr5MoYB237－70 0.0300.03540202212 2112CrMoVYB529－70 0.0400.040544017 2212Cr2MoWVBYB529－70 0.0350.035553518 2312Cr3MoVSiTiBYB529－70 0.0350.035644518 2412CrMoVYB529－70 0.0400.04048
4526
2621
196
5纵向
横向251Cr18Ni9TiYB804－70 0.0300.03556 40 26Cr18Ni13Mo2TiYB804－70 0.0300.03560 35 2700Cr18Ni10YB804－70 0.0250.03550 50 2800Cr17Ni13Mo2YB804－70 0.0250.03560 40 钢
管29ZG25YB979-67 0.040.044524204.5 30ZG20CrMo 0.030.034725183 31ZG20CrMoV 0.030.035032143 32ZG15Cr1Mo1V 0.030.035535203.5
