SA 387 Gr 12 Cl 2 is a specific grade of chromium-molybdenum (Cr-Mo) alloy steel plate, defined by ASTM A387 / ASME SA 387 specifications, engineered for high-temperature service in weldable pressure vessels, boilers, and heat exchangers, offering good corrosion resistance, strength, and durability in demanding environments like oil & gas.
Chemical Composition of SA387 GR.12 CL.2 Plate
| C | Mn | P | S | Si | Cr | Mo |
| 0.04 - 0.17 | 0.35 - 0.73 | 0.035 | 0.035 | 0.13 - 0.45 | 0.74 - 1.21 | 0.4 - 0.65 |
Mechanical Properties of SA 387 GR.12 CL.2 Plate
| Tensile Strength | Yield Strength | Elongationin 200mm (%) | Elongation in 50mm (%) |
| 65-85 ksi, 450-585 MPa | 40 Ksi, 275 MPa | 19 | 22 |
Key Applications
Pressure Vessels & Tanks: For storing and transporting gases and liquids under high pressure, including oxygen cylinders and large metallic tanks.
Boilers & Heat Exchangers: Essential components in industrial boilers, steam generators (HRSG), and heat transfer equipment.
Oil & Gas Industry: Used in refineries, processing plants, and for equipment in sour service (containing hydrogen sulfide).
Power Generation: Found in thermal power plants, gas turbines, and components requiring high-temperature resilience.
Chemical Processing: For equipment in chemical plants operating under high temperatures and pressures.
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1.What is the SA 387 Gr 12 CL 2 equivalent to?
SA 387 Gr 12 Cl 2 (ASME/ASTM) is a chromium-molybdenum alloy steel for pressure vessels, with equivalents including EN 13CrMo4-5, DIN 13CrMo44, BS 620B, and French AFNOR 36206 15CD2, all offering similar properties for high-temperature service with excellent corrosion resistance. It's a higher tensile strength version (Class 2) compared to Class 1, sharing the same basic composition.
2.What is SA 387 GR 12 material?
Engineered for use in elevated temperature service, ASME SA387 Grade 12 is a chrome molybdenum carbon alloy steel for use in weldable pressure vessels and industrial boilers.