SA387GR22 Steel Plate | ASME SA387 Grade 22 Class 1 & Class 2

SA387GR22 Steel Plate | ASME SA387 Grade 22 Class 1 & Class 2 Supplier – Gangsteel

Gangsteel is a professional manufacturer and exporter of SA387GR22 Steel Plate (ASME SA387 Grade 22). With over 15 years of dedicated experience in 2.25Cr-1Mo alloy steels, we supply both Class 1 and Class 2 plates to power plants, petrochemical refineries, and pressure vessel fabricators worldwide. SA387GR22 remains one of the most trusted and widely used Cr-Mo grades due to its proven long-term reliability in moderate high-temperature service up to 550°C.

What Is SA387GR22 Steel Plate?SA387GR22 is the standard 2.25Cr-1Mo alloy steel plate designed for elevated temperature service. It offers an excellent balance of creep strength, oxidation resistance, and cost-effectiveness. Unlike the low-carbon “L” version or the higher-strength Class 2, SA387GR22 is the original and most versatile grade in the SA387 series, making it ideal for projects that require proven performance and easy fabrication.

Chemical Composition (Heat Analysis, %)Gangsteel produces SA387GR22 strictly according to ASME SA387 specifications. Full heat analysis and mill test certificates are provided with every plate.

Mechanical PropertiesGangsteel supplies SA387GR22 in both Class 1 and Class 2 conditions to meet different design requirements.

Class 1 (Normalized + Tempered)

• Tensile Strength: 415–585 MPa
• Yield Strength: ≥ 205 MPa
• Elongation in 50 mm: ≥ 22%

Class 2 (Normalized + Tempered)

• Tensile Strength: 515–690 MPa
• Yield Strength: ≥ 310 MPa
• Elongation in 50 mm: ≥ 22%

Equivalent Material Table

Main ApplicationsSA387GR22 Steel Plate is widely chosen for:

• Power plant boilers and steam drums
• Refinery pressure vessels and hydrotreating reactors
• High-temperature heat exchangers
• Coal gasification equipment

Why Choose Gangsteel SA387GR22?

• Direct mill production with full EN 10204 3.1 / 3.2 certification
• 100% ultrasonic testing (UT) performed on every plate
• Large regular stock for common thicknesses 6 mm–150 mm
• Competitive pricing with reliable delivery schedule (7–30 days)
• Professional technical support for welding procedure and material selection

Real Supply ExperienceIn 2025, Gangsteel successfully supplied over 1,200 tons of SA387GR22 plates to a major refinery upgrade project in the Middle East. The material was used for critical pressure vessels operating at 480°C. All plates passed stringent third-party inspection, and the customer highlighted the consistent mechanical properties and excellent weldability during fabrication.

Request a QuoteIf you need SA387GR22 steel plates in specific thickness, width, length, or heat treatment condition (Class 1 or Class 2), contact Gangsteel today. We will provide a formal quotation with complete technical data and mill test certificates within 24 hours.

Keywords:SA387GR22 Steel Plate, ASME SA387 Grade 22, 2.25Cr-1Mo Alloy Steel Plate