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A203 Grade B,SA203 Grade B pressure vessel boiler steel plate
Source:Xin Steel Industry Date:2012/11/15
A203 Grade B boiler steel plate with minimum yield strength at 275 Mpa,higher than A203 Grade A pressure vessel steel plate at 255 Mpa,and tensile strength shall be above 480 Mpa for steel plate SA203 Grade B.Ultrasonic examination for pressure vessel steel plate A203 Grade B,there are A 435/A 435M specification for straight-beam Ultrasonic examination of steel plates.A 577/A 577M specification for angle-beam ultrasonic examination of steel plates.A 578/A 578M specification for straight-beam ultrasonic examination of plain and clad steel plates for special applicaitons,and A578/A578M including three levels,A578-A,A578-B,A578-C.
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Other relative pressure vessel steel grades under steel standard ASTM and ASME are S/A203 Grade A boiler steel plate,S/A203 Grade B steel plate,S/A203 Grade D alloy steel plate,S/A203 Grade E pressure vessel steel plate,S/A203 Grade F steel plate,S/A204 Grade A boiler steel plate,S/A204 Grade B pressure vessel steel plate,S/A204 Grade C steel plate,S/A285 Grade A steel sheet,S/A285 Grade B boiler steel plate,S/A285 Grade C pressure vessel steel plate,S/A299 Grade A boiler steel plate,S/A299 Grade B steel plate,S/A302 Grade A alloy steel plate,S/A302 Grade B steel plate,S/A302 Grade C boiler steel plate,S/A302 Grade D pressure vessel steel plate.
Chemical composition of Ladle analysis for SA203 Grade B pressure vessel steel plate (Max %)
|
Thickness |
C |
Si |
Mn |
P |
S |
Ni |
|
T≤50 |
0.21 |
0.15/0.40 |
0.70 |
0.035 |
0.035 |
2.10/ 2.50 |
|
T>50 |
0.24 |
0.80 |