Comparing with steel sheet ASTM A514 Grade Q and sheet A514 Grade R, for the chemical composition,steel sheet ASTM A514 Grade Q contains Chromium 1.00-1.50 %,and steel plates ASTM A514 Grade R just contains 0.35-0.65%.So ASTM A514 Grade Q definately would bear higher weathering resistance and other environmental corrosion when using in structral bodies.
ASTM A514 Grade Q Chemical Composition |
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|
Grade |
The Element Max (%) |
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|
A514 Grade Q |
C |
Mn |
P |
S |
Si |
Ni |
|
0.14-0.21 |
0.95-1.30 |
0.035 |
0.035 |
0.15-0.35 |
1.2-1.50 |
|
|
Cr |
Mo |
V |
Cu |
B |
|
|
|
1.0-1.5 |
0.40-0.60 |
0.03-0.08 |
- |
- |
|
|
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
| Grade |
ASTM A514 Grade Q Mechanical Property |
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|
A514 Grade Q |
Thickness |
Yield |
Tensile |
Elongation |
|
mm |
Min Mpa |
Mpa |
Min % |
|
|
6-20 |
690 |
760-895 |
18 |
|
|
20-65 |
690 |
760-895 |
18 |
|
|
65-150 |
620 |
690-895 |
16 |
|
| Thickness |
1.2-600mm |
|
Width |
1220-4200mm |
|
Length |
5000-18000mm |
|
Notes |
coil thickness ≤ 25mm |
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