ASTM A514 grade Q/ A514 Gr.Q high strength weldable steel plate is high strength weldable steel plate for quenching and tempering under the ASTM A514 / A514M standard. The main purpose is to use under high tensile, high yield sites. The engineering car lifting gear and the rack used in the offshore platform generally use ASTM A514 Grade Q/ A514 Gr.Q high strength weldable steel plate.
ASTM A514 Grade Q high strength weldable steel plate chemical composition:
|
Grade |
C |
Mn |
P |
S |
Si |
Ni |
Cr |
Mo |
V |
Ti |
Zr |
Cu |
B |
| A514 Gr.Q | 0.14-0.21 | 0.95-1.30 | ≤0.035 | ≤0.040 | 0.15-0.35 | 1.20-1.50 | 1.00-1.50 | 0.40-0.60 | 0.03-0.08 | ~ | ~ | ~ | ~ |
ASTM A514 Gr.Q high strength weldable steel plate mechnical properties:
| Grade |
Thickness |
Yield Strength |
Tensile |
Elongation in 50mm |
Hardnees |
|
A514 Gr.Q |
less 3/4 inch |
690 Mpa |
760-895 Mpa |
18 |
235 |
| over 3/4 to 2 1/2 | 690 Mpa | 760-895 Mpa | 18 | ~ | |
| over 2 1/2 to 6 inch | 620 Mpa | 690-895 Mpa | 16 | ~ |
Based on various thickness, the hardness of ASTM A514 Grade Q/ A514 Gr.Q high strength weldable steel plate is between 235-290, yield greater than 630MPa, tensile strength at 700MPa above. The processing of ASTM A514 Grade Q/ A514 Gr.Q high strength weldable steel plate is more difficult than common steel plates. So the ASTM A514 Grade Q/ A514 Gr.Q high strength weldable steel plate supplier is very important to consider to guarantee the plate quality.
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