ASTM A516 Grade 70 (Carbon Steel Plates for Pressure Vessels) ASTM A516 Grade 70 is a high-strength carbon steel plate designed specifically for use in pressure vessels and boilers. Known for its superior tensile strength, notch toughness, and excellent weldability, it is widely used in industries such as oil & gas, petrochemical, thermal, and power generation. The material is typically supplied in a normalized condition, which refines the grain structure and enhances resistance to pressure and temperature-related stress. A516 Gr. 70 complies with ASME and ASTM standards, making it a globally accepted material for critical applications requiring reliable strength and durability. Key Features: Minimum yield strength of 260 MPa with higher tensile range Enhanced notch toughness in normalized condition Reliable performance under moderate to high temperatures Excellent weldability and formability for heavy fabrication Complies with ASTM A516 / ASME SA516 specifications Mechanical Properties: Property A516 Grade 70 Yield Strength ≥ 260 MPa Tensile Strength 485–620 MPa Elongation ≥ 17–21% Impact Resistance Excellent Temperature Range Moderate to high Weldability Very good Applications: High-pressure steam boilers and autoclaves Chemical storage tanks and pressure vessels Heat exchangers and energy sector equipment Industrial reactors, separators, and process tanks Oil & gas facilities and thermal power systems Summary: ASTM A516 Gr. 70 offers a combination of high tensile strength, ductility, and thermal reliability, making it a go-to material for pressure equipment. It ensures long-term safety, efficiency, and compliance in high-stress industrial environments.