ASME SA386 Grade 11
ASME SA386 Grade 11 is a chromium-molybdenum alloy steel plate developed for welded boilers, pressure vessels, and heat-resistant industrial equipment operating under elevated temperatures and pressure conditions. Manufactured to ASTM specifications, this alloy pressure vessel steel contains approximately 1.25% chromium and 0.50% molybdenum, providing enhanced mechanical strength, oxidation resistance, creep resistance, and long-term durability in high-temperature environments. The addition of chromium improves corrosion and oxidation resistance, while molybdenum increases tensile strength and resistance to thermal fatigue, making ASME SA386 Grade 11 suitable for demanding thermal service applications.
ASME SA386 Grade 11 steel plate is widely used in industries such as oil and gas, petrochemical processing, power generation, chemical plants, and refinery operations where equipment is exposed to continuous heat and pressure. It is commonly utilized in the fabrication of boilers, heat exchangers, pressure vessels, reactors, storage tanks, separators, and process piping systems requiring reliable performance at elevated temperatures. The material offers excellent weldability and fabrication characteristics, allowing it to be formed, welded, and machined efficiently for heavy industrial construction projects.
This Cr-Mo alloy steel plate is available in normalized, normalized and tempered, or as-rolled conditions depending on application requirements and mechanical property specifications. ASME SA386 Grade 11 provides strong creep resistance and stable mechanical properties during prolonged thermal exposure, helping reduce maintenance costs and improve service life in high-temperature processing environments. Its balanced alloy composition makes it an economical and dependable material choice for pressure-containing equipment requiring resistance to oxidation, heat stress, and pressure-related deformation.
ASME SA386 Grade 11 pressure vessel plate is produced in multiple thicknesses, widths, and dimensions to meet a wide range of engineering and industrial standards. The material is frequently selected for fabrication projects requiring compliance with ASME pressure vessel codes and elevated-temperature service regulations. Due to its combination of heat resistance, toughness, weldability, and structural reliability, ASME SA386 Grade 11 alloy steel plate remains a preferred solution for critical boiler and pressure vessel applications across global industrial sectors.