A387 Grade 11 Class 2 (A387 Gr11 Cl2) is a chromium-molybdenum (Cr-Mo) alloy steel plate designed for pressure vessels and welded boilers in elevated temperature service.
A387 Grade 11 Class 2
Its high chromium and molybdenum content ensures excellent corrosion and oxidation resistance, making it ideal for medium- to high-temperature applications.
Production Details of A387 Grade 11 Class 2
Thickness: 4 mm – 400 mm
Width: 1000 mm – 4000 mm
Length: 4000 mm – 12000 mm
Monthly Production Capacity: 10,000 Tons
Production Methods:
Hot Rolled, Annealing, Normalizing, Tempering
Technical Details
Heat Treatment:
Normalized, Quenched, Tempered, HIC, Impact Test (optional as per customer requirement)
Chemical Composition (%)
| Grade / Material | C | Mn | Si | P | S | Cr | Mo |
|---|---|---|---|---|---|---|---|
| A387 Grade 11 Class 2 | 0.05-0.17 | 0.40-0.65 | 0.15-0.40 | 0.035 | 0.035 | 1.00-1.50 | 0.45-0.65 |
Mechanical Properties
| Grade / Material | Tensile Strength (Ksi / MPa) | Yield Strength (Ksi / MPa) | Elongation (%) |
|---|---|---|---|
| A387 Grade 11 Class 2 | 75-100 / 515-690 | 45 / 310 | 18 |
Impact Test: Optional
Applications
Pressure vessels and welded boilers
Petrochemical industry equipment
High-temperature industrial applications
Medium-temperature chemical processing
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What is ASTM A387 material?
ASTM A387 GR. 91 CL. 2 Alloy Steel Plates manufactured at the world's finest steel mills, this molybdenum-chrome based alloy has excellent resistance to greater working temperatures, making it the right selection for various applications like in gas, oil, chemical, and power generation.
What is ASTM A387 Grade 11 equivalent to?
ASTM A387 grade 11 equivalent steel is ASME SA387 grade 11. ASTM A387 grade 11 covers A387 grade 11 class 1 and A387 grade 11 class 2, which are equivalent to ASME SA387 grade 11 class 1 and SA387 grade 11 class 2 respectively.
What is the difference between ASTM A182 and A387?
A387 is Plate material. A182 is Forging material. You can refer relevant ASTM Book of standards.
What is ASTM A387?
The ASTM A387 specification is the Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum plates used in the application of welded boilers and pressure vessels subjected to elevated temperatures. The two grades SSAB produces are available as Class 1 and/or Class 2.