A514Gr.Q steel is a quenched and tempered high-strength weldable steel plate under the ASTM A514 standard. It is used in places that require high tensile strength and high yield, such as lifting gears for engineering vehicles and large excavators. The racks for offshore platforms generally use A514Gr.Q or A514Gr.F. The hardness of A514Gr.Q is between 235-290, the yield is greater than 690MPa, and the tensile strength is greater than 700MPa.
A514Gr.Q steel mechanical properties
Thick |
Tensile strength MPa |
Yield strength |
Elongation, % |
rate of reduction in area % |
Brinell hardness |
|
≤20 |
760-895 |
<690 |
18 |
40 |
235-293 |
|
20-65 |
760-895 |
<690 |
18 |
40,50 |
---- |
|
65-150 |
690-895 |
<620 |
16 |
50 |
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With the development of welding, electronic computer technology, steel, shipbuilding, and machinery industries, offshore platforms have the characteristics of complex structure, large volume, high cost, and ability to adapt to various harsh working conditions. A514Gr.Q alloy plate produced by BBNsteel has a thickness of 180mm.
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