SA 387 Gr 11 is a type of steel plate that is commonly used in high-temperature applications, such as boilers, pressure vessels, and heat exchangers. Here are some key properties and characteristics of SA 387 Gr 11 steel: - Grade: SA 387 Gr 11 - Material: Chromium-Molybdenum Steel - Thickness: 4mm-150mm - Width: 1000mm-3000mm - Length: 3000mm-12000mm - Yield Strength: 240 MPa (min) - Tensile Strength: 515-655 MPa - Elongation: 18% (min) - Impact Test: -20°C (optional) - Heat Treatment: Normalized & Tempered - Applications: - Boilers - Pressure vessels - Heat exchangers - High-temperature equipment - Features: - High-temperature strength and durability - Good weldability and machinability - Good corrosion resistance - Affordable price SA 387 Gr 11 steel is known for its excellent high-temperature properties, making it a popular choice for applications where high strength and durability are critical. Note: SA 387 is a specification from the American Society of Mechanical Engineers (ASME), and Gr 11 is the grade level. The exact composition and properties of SA 387 Gr 11 steel may vary depending on the specific standard or specification being followed.