4140 steel sheet,Alloy Structural Steel Plate,alloy plate,High Alloy Steel Plate
The alloy steel plates sold by the company are mainly used for manufacturing bridges, ships, vehicles, boilers, high-pressure vessels, oil and gas pipelines, large steel structures, etc. The yield strength should be above 300MPa, with a required elongation of 15% to 20%, and a room temperature impact toughness greater than 600kJ/m to 800kJ/m. For large welded components, high fracture toughness, good welding and cold forming performance, and good corrosion resistance are also required.