he Alloy Steel Plate 387 GR 16MO3 refers to a specific type of chromium-molybdenum steel plate used in various high-temperature and high-pressure applications. Here's a breakdown of the code: - Alloy Steel: A type of steel that contains additional elements (like chromium, molybdenum, or vanadium) to enhance its properties - Plate 387: This is the specification number from the American Society for Testing and Materials (ASTM) - GR 16MO3: Grade 16MO3, indicating the chemical composition and mechanical properties of the steel 16MO3 is a low-alloy steel grade that contains: - 0.12-0.20% Carbon (C) - 0.20-0.80% Molybdenum (Mo) - 0.25-0.35% Chromium (Cr) This grade is known for its excellent: 1. High-temperature resistance 2. Creep resistance 3. Corrosion resistance 4. Weldability 16MO3 steel plates are commonly used in: 1. Power generation (boilers, heat exchangers) 2. Petrochemical processing 3. Oil and gas refineries 4. Pressure vessels