SA 387 Gr 11 is a type of steel plate specification under the American Society for Testing and Materials (ASTM) standards. Here's a brief overview: SA 387 Gr 11: - Grade: 11 (Chrome-Moly steel) - Standard: ASTM A387/A387M - Class: 2 (weldable) - Thickness: 1.25" to 6" (32 mm to 152 mm) - Yield Strength: 22, 000 psi (152 MPa) - Tensile Strength: 75, 000 psi (515 MPa) - Chemical Composition: - Chromium (Cr): 1.25% max - Molybdenum (Mo): 0.50% max - Manganese (Mn): 0.50% max - Silicon (Si): 0.50% max - Carbon (C): 0.15% max SA 387 Gr 11 is a pressure vessel grade steel plate used in: - High-temperature applications (up to 1200°F/649°C) - Boilers, heat exchangers, and reactors - Petrochemical and refining industries - Power generation and nuclear applications This grade offers excellent resistance to high-temperature corrosion and oxidation, making it suitable for harsh environments. Do you have any specific questions or need further information about SA 387 Gr 11 or its applications?