Q255B must make room temperature pound an experiment, with V breach sample
A4
C4
The mechanical function that A4 steel assures, the chemical composition that C4 steel assures reachs mechanical function, basic and as identical as Q255 steel
C4 steel is add assure to pound an experiment, with U breach sample
Q275
Off grade class, chemical composition of the regulation and mechanical function all must assure
C5
The chemical composition that C5 steel assures reachs mechanical function, basic and as identical as Q275 steel
2, low-alloy steel uses GB/T1591-94 to replace 1591-88 at present, now the part new old steel grade contrasts as follows:
GB/T1591-94
GB1591-88
Q295
09MnV 09MnNb 12Mn
Q345
12MnV 16Mn 16MnRE
Q390
15MnV 15MnTi 16MnNb
Q420
15MnVN 14MnVTiRE
上一页 1 2 3 4 5 6 7 8 9 10 11下一页
