A514 steel plate is a high-strength, quenched and tempered alloy steel plate. The ASTM A514 specification covers quenched and tempered alloy steel plates of structural quality in various grades, each denoted by a letter. Different grades of A514 steel plate offer varying levels of strength and toughness. The most common grades include A514 Grade B, Grade E, Grade F, Grade H, and A514 Grade P. Each grade has specific mechanical properties and chemical compositions that make it suitable for different applications.

A514 steel plate is commonly used in industries such as construction, mining, and heavy machinery, where high strength and durability are essential. It is known for its excellent strength-to-weight ratio, making it suitable for applications that require light yet strong components.