seamless carbon steel structure
 |
Standard: A500/A500M Steel grade: A,B,D and C Size: OD(15*15-400*400mm)×WT(1.5-12.5mm); OD(3-400mm)×(0.5-50mm) Application: used for construction of bridges and buildings |
Chemical composition
|
Chemical constituent：% |
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|
Grade |
A,B,D |
C |
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|
Heat analysis |
Product analysis |
Heat analysis |
Product analysis |
|
|
C, max |
0.26 |
0.3 |
0.23 |
0.27 |
|
Mn, max |
1.35 |
1.4 |
1.35 |
1.4 |
|
P, max |
0.035 |
0.045 |
0.035 |
0.045 |
|
S, max |
0.035 |
0.045 |
0.035 |
0.045 |
|
Cu, max |
0.2 |
0.18 |
0.2 |
0.18 |
Mechanical properties
|
Round structural tubing |
Shaped structural tubing |
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|
Grade A |
Grade B |
Grade C |
Grade D |
Grade A |
Grade B |
Grade C |
Grade D |
|
|
Tensile strength,min,[MPa] |
310 |
400 |
425 |
400 |
310 |
400 |
425 |
400 |
|
Yield strength,min,[MPa] |
230 |
290 |
315 |
250 |
270 |
315 |
345 |
250 |
|
Elongation in 2 in. [50 mm],min |
25% |
23% |
21% |
23% |
25% |
23% |
21% |
23% |
Permissible Variations
|
Permissible Variations |
Large Outside Flat Dimension, [mm] |
Permissible Variations [mm] |
|
≤65 |
0.5 |
|
|
65< , ≤90 |
0.6 |
|
|
90< , ≤140 |
0.8 |
|
|
>140 |
0.01 times large flat dimension |