Phosphorus is a very harmful element in A709 Gr 50W bridge steel plate steel. With the increase of phosphorus content, the strength, flexion ratio and hardness of A709 Gr 50W bridge steel plate steel increased, but the plasticity and toughness decreased significantly. In particular, the lower the temperature, the greater the impact on plasticity and toughness, increase the cold brittleness of steel.
Hot-rolled coil is a commonly used steel product in the industry. It has a relatively wide variety of products and a wide range of uses. A709 Gr 50W bridge steel plate, Hot-rolled coils are widely used in related industries such as petrochemical equipment, automobiles and bridges. Hot-rolled coils are also used in machinery industries such as ships and automobiles because of their good toughness and relatively high strength.
A514 gr.H quenched and tempered alloy steel sheet chemical composition (melting analysis)%C: 0.12-0.21, Si: 0.20-0.35, Mn: 0.95-1.30, P max.: 0.035, S max.: 0.035, Cr: 0.40-0.65, Ni: 0.30-0.70, Mo: 0.20-0.30, V: 0.03-0.08, B: 0.001-0.005The mechanical properties in thickness (mm)T≤65Yield strength (≥Mpa): 690Tensile strength (Mpa):760-895Elongation in ≥, %: 18
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