SA 517 Gr 70 is a type of steel plate that is commonly used in high-pressure applications, such as boilers, pressure vessels, and heat exchangers. Here are some key properties and characteristics of SA 517 Gr 70 steel: - Grade: SA 517 Gr 70 - Material: Carbon Steel - Thickness: 4mm-150mm - Width: 1000mm-3000mm - Length: 3000mm-12000mm - Yield Strength: 70 ksi (485 MPa) - Tensile Strength: 90-120 ksi (620-830 MPa) - Elongation: 15% (min) - Impact Test: -20°C (optional) - Heat Treatment: Normalized - Applications: - High-pressure boilers - Pressure vessels - Heat exchangers - High-temperature equipment - Features: - High strength and toughness - Good weldability and machinability - Good corrosion resistance - Affordable price SA 517 Gr 70 steel is known for its excellent strength, toughness, and weldability, making it a popular choice for high-pressure applications. Note: SA 517 is a specification from the American Society of Mechanical Engineers (ASME), and Gr 70 is the grade level. The exact composition and properties of SA 517 Gr 70 steel may vary depending on the specific standard or specification being followed.