ASME SA387 Grade 12 Class 2 Plates are high-quality alloy steel plates designed for use in elevated temperatureenvironments. These plates are made from chromium-molybdenum alloy steel, which provides excellent resistance toheat and corrosion. The "Grade 12" designation refers to the specific alloy composition, while "Class 2" indicates thequality and tensile strength of the plates.

Key Applications by Industry

Oil & GasIdeal for critical refinery equipment, separator vessels, and high-temperature storage tanks. The chromium content endows the material with excellent resistance to sulfide stress cracking, making it a reliable choice for sour service applications involving hydrogen sulfide-containing media in upstream extraction and downstream processing.

Power GenerationWidely adopted for core components including heavy-duty boiler drums, high-pressure steam pipelines, turbine casings, and heat recovery steam generators (HRSG). It maintains stable mechanical properties under long-term thermal cycling, ensuring the safe and continuous operation of thermal power plants.

Chemical ProcessingApplied to fabricate robust reactors and corrosion-resistant pressure vessels for handling aggressive media such as acids, alkalis, and oxidizing chemicals. It withstands the combined stress of elevated temperatures, fluctuating pressures, and chemical corrosion in continuous production processes.

General IndustryUsed for manufacturing high-temperature industrial piping systems and load-bearing structural components in custom boilers and pressure vessels. Its good weldability and formability also make it suitable for fabricating non-standard equipment operating in moderate high-temperature conditions.

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1.What is SA 387 GR 12 Cl 2 equivalent material?

The Equivalent materials of Sa 387 Gr 12 are BS 620B, UNS K11757, A387 / SA 387, DIN 13 CRMO 44, and EN 3 CRMO 45.

2.What is SA 387 Gr 12 CL 2 material?

SA 387 Gr 12 Cl 2 is a chromium-molybdenum alloy steel plate (ASTM/ASME A/SA 387) designed for high-temperature service in weldable pressure vessels and boilers, offering excellent corrosion/oxidation resistance due to its chromium content and good high-temperature strength, suitable for demanding applications in oil, gas, and power generation. "Grade 12" specifies the chromium and molybdenum content (around 0.8-1.15% Cr, 0.45-0.65% Mo), while "Class 2" indicates specific mechanical properties, typically delivered in a normalized and tempered condition for enhanced performance.