SA 516 GR.70 plates are a type of carbon steel plate that is widely used in the construction of boilers, pressure vessels, and other equipment. Here are some key details about SA 516 GR.70 plates: Material: - Carbon steel with chromium and molybdenum additions - UNS number: K02700 Chemical Composition: - Carbon: 0.20% max - Manganese: 0.60-0.90% - Phosphorus: 0.025% max - Sulfur: 0.025% max - Silicon: 0.15-0.30% - Chromium: 0.50-0.80% - Molybdenum: 0.45-0.60% Mechanical Properties: - Tensile Strength: 485-620 MPa (70-90 ksi) - Yield Strength: 260-290 MPa (38-42 ksi) - Elongation: 21-25% - Impact Energy (Charpy): 27-38 J (20-28 ft-lbs) Dimensions: - Thickness: 5mm to 200mm (0.2" to 7.87") - Width: 1000mm to 4000mm (39.37" to 157.48") - Length: 2000mm to 12000mm (78.74" to 472.44") Plate Types: - Hot Rolled (HR) - Normalized (N) - Quenched and Tempered (QT) Applications: - Boilers and pressure vessels - Oil and gas industry - Petrochemical and chemical processing - Power generation and transmission Certifications: - EN 10204 3.1 or 3.2 certification - API certification (if required)