???????λ??????????????????? > ???????? > Q345B?????????16mn??????

Q345B?????????16mn??????


Q345B?????????????С????????????????????????????Q345B????????????з????16Mn??????
Q345?????????????????Q???????????????????????????345????????????????????????345???????????????????????????????????С??

Q345B???????????

Q345B??????% C??0.20??Mn 1.00-1.60,Si??0.55,P??0.040,S??0.045, V 0.02-0.15,Nb 0.015-0.060,Ti 0.02-0.20 .??е????????????470-630MPa ???????325MPa ????21%??


Q345B???????б????

1.?????????GB/T8162-2008???????????????е??????????
????
2.????????????????GB/T8163-2008????????????????????????????????????
????
3.????????????????GB3087-2008?????????????????????????????????????????????????ù???????????????????????????????????Σ???????????????

4.??????????У???????????????GB5310-2008????GB/T6479-2008??????ù??



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