Products Description
ASTM A514 Grade B alloy steel plate is one of the high yield strength quenched and tempered alloy plates suitable for welding under the American Standard ASTM A514 / A514M.
It is also called A514 Gr.B alloy steel plate, which is one of the eight common specifications of ASTM A514 steel standard. The maximum thickness of ASTM A514 Grade B alloy steel plate is 50mm.
ASTM A514 Grade B alloy steel plate chemical composition
| Grade | C | Mn | P | S | SI | Ni | Cr | Mo | V | Ti | Zr | Cu | B |
| A514 Gr.B | 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 | 0.01-0.03 | ~ | ~ | 0.0005-0.005 |
ASTM A514 Gr.B alloy steel plate mechnical properties
| Grade | Thickness Inch | Yield Strength Mpa | Tensile Strength Mpa | Elongation in 50mm | Hardnees Brinell |
| A514 Gr.B | 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 | ~ |
Products Application
A514 Grade B steel plate is a high-strength, low-alloy steel with a minimum yield strength of 470 MPa, tensile strength typically ranging from 580–690 MPa, and elongation of approximately 18–22%.
It also offers excellent toughness and impact resistance, maintaining structural stability and safety even in harsh environments. This makes it widely used in demanding industries requiring high strength and durability.
In engineering equipment, A514 Grade B is commonly used for critical load-bearing components such as gears for engineering vehicles, lift mechanisms, and marine channel racks, ensuring reliability under heavy loads and continuous operation. In ocean engineering, it is employed in platforms, pipelines, and other structures exposed to saltwater and humid conditions, providing superior corrosion resistance and fatigue performance.
In mining and construction, the steel plate is suitable for drill rigs, excavators, loaders, bulldozers, cranes, and hydraulic supports, capable of withstanding high-impact forces and continuous operational loads.
In infrastructure, A514 Grade B is used in bridge supports, high-rise building structures, and industrial machinery, ensuring safety under load and seismic conditions. Additionally, it is applied in power generation equipment, such as power towers, transformers, and other heavy-duty machinery, meeting the demands of high-strength and high-reliability engineering.
With its combination of high strength, excellent weldability, and impact resistance, A514 Grade B is an indispensable material for heavy-duty engineering and high-strength manufacturing applications.
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