SA 516 Grade 70 (High-Strength Carbon Steel for Boilers & Pressure Vessels) SA 516 Grade 70, also known as ASTM A516 Gr. 70, is a carbon steel plate specifically manufactured for pressure-bearing applications such as boilers, heat exchangers, and storage tanks. With its enhanced tensile strength and reliable impact resistance, it stands out as a preferred choice for demanding environments involving high pressure and heat. Delivered in a normalized state, it offers a refined microstructure and dependable mechanical stability. It meets global standards under ASTM and ASME codes, supporting critical infrastructure in energy, petrochemical, and industrial sectors. Key Features: Delivers higher tensile strength (up to 620 MPa) Excellent low-temperature toughness and performance Well-suited for moderate to high-temperature pressure systems Facilitates easy welding, forming, and cutting Approved under ASTM A516 / ASME SA516 for vessel-grade steel Mechanical Properties: Property SA 516 Gr. 70 Yield Strength ≥ 260 MPa Tensile Strength 485–620 MPa Elongation ≥ 17–21% Toughness High, especially when normalized Temperature Endurance Robust at elevated conditions Weldability Excellent Major Applications: Boilers and superheaters in thermal plants Chemical and oil refinery storage tanks Pressure vessels in gas treatment systems Shells of industrial exchangers and condensers Components in power generation and offshore facilities Summary: SA 516 Grade 70 is engineered to perform in high-pressure and elevated temperature environments. Its strength, consistency, and compliance with global standards make it an industry-standard steel plate for safe and long-term operation in critical infrastructure projects.