Chemical composition and properties of A709 Gr50 steel plate

A709 Gr50 high-strength low-alloy steel plate is American standard bridge steel plate, also known as low-alloy plate.

A709 Gr50 steel plate delivery status: normalized, tempered, quenched.

Chemical composition of A709 Gr50 steel plate:
C content: ≤0.20; Si content: ≤0.40; Mn content: ≤1.50; P content: ≤0.04; S content: ≤0.05; Nb content: 0.005-0.05;

Mechanical properties of A709 Gr50 low alloy plate:
σs≥345MPa, σb≥450MPa, δ200≥18 %, 0℃ Akv ≥34J

Application scope of A709 Gr50 steel plate:
A709 Gr50 steel plate is a high-strength low-alloy steel plate, widely used in engineering structures, such as building steel structures, construction machinery, mining and mountain machinery, trucks, bridges, pressure vessels, etc., especially for those construction and construction machinery components requiring good weldability and toughness.