ASTM A514 Grade B under ASTM A514 standard, A514 Grade B covers quenched and alloy steel plates of structural quality in thicknesses of 6 in. (152 mm) and under intended primarily for use in welded bridges and pressure vessels.
ASTM A514 Grade B chamical composition
|
C |
Mn |
P |
S |
Si |
Cr |
Mo |
V |
B |
Ti |
|
0.12-0.21 |
0.7-1.0 |
≤0.035 |
≤0.04 |
0.2-0.35 |
0.4-0.65 |
0.15-0.25 |
0.03-0.08 |
0.0025 max |
0.01-0.03 |
ASTM A514 Grade B mechanical properties
|
Thickness Inch |
Yield Strength
Mpa |
Tensile Strength Mpa |
Elongation in 50mm |
Hardness Brinell |
|
less 3/4 inch |
690 |
760-895 |
18 |
235 |
|
over 3/4 to 2 1/2 |
690 |
760-895 |
18 |
- |
|
over 2 1/2 to 6 inch |
620 |
690-895 |
16 |
- |
A514 Grade B is for high yield strength, quenched and tempered alloy steel plate, suitable for wedding, and under intended primarily for use in welded bridges and other structures.
