A516 Grade 65 is a carbon-manganese-silicon pressure vessel steel plate designed for moderate- and lower-temperature service in boilers, welded pressure vessels, and industrial process equipment. The grade provides reliable notch toughness, stable fabrication performance, and consistent strength across different thickness ranges. It is commonly used in petrochemical, power generation, and industrial pressure systems requiring dependable plate quality and good weldability. Chemical Composition (ASTM A516/A516M) Carbon: ≤ 0.24% Manganese: 0.85–1.20% Silicon: 0.15–0.40% Phosphorus: ≤ 0.035% Sulfur: ≤ 0.035% The carbon-manganese-silicon alloy system provides balanced strength, toughness, and weldability for pressure vessel fabrication. Mechanical Properties Tensile Strength: 450–585 MPa Yield Strength: ≥ 240 MPa Elongation: ≥ 19% (200 mm gauge length) ≥ 23% (50 mm gauge length) These values support safe operation in moderate- and lower-temperature pressure systems. Size Range (Website 5 Standard Template) Thickness: 3–150 mm Width: 1220–4200 mm Length: 5000–18000 mm Stock & Processing Services Cutting • Beveling • Welding preparation • Heat treatment • Custom fabrication for pressure vessels Applications Boilers and pressure drums Industrial pressure vessels Heat exchangers and condensers Petrochemical equipment Power generation components Storage tanks and separators