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Member Since 2 Years
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GST No. 27AQCPC2714K1Z4Ask for more detail from the seller
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ASME SA 387 Grade 12 Class 1 and Class 2 Plates are 1% Chromium – 0.5% Molybdenum alloy steel plates designed for high-temperature and pressure service. These plates are primarily used in boilers, pressure vessels, heat exchangers, oil & gas processing units, and chemical plants due to their outstanding thermal resistance, mechanical strength, and oxidation resistance.
The Class 2 variant offers a higher tensile strength compared to Class 1, while maintaining the same corrosion and creep-resistant properties.
Key FeaturesExcellent strength and stability at elevated temperatures
High resistance to thermal fatigue and oxidation
Good weldability and formability
Supplied in normalized and tempered condition
Ideal for boiler and pressure vessel applications
| Grade | Grade 12 |
| Class | Class 1 and Class 2 |
| Alloy Content | Chromium ~1%, Molybdenum ~0.5% |
| Delivery Condition | Normalized and Tempered |
| Thickness | 6 mm – 100 mm |
| Width | Up to 3000 mm |
| Length | Up to 12000 mm |
| Surface Finish | Mill Finish / Shot Blasted / Painted |
| Tensile Strength | 415 – 585 MPa | 515 – 690 MPa |
| Yield Strength | ≥ 205 MPa | ≥ 275 MPa |
| Elongation | ≥ 20% | ≥ 20% |
| Impact Toughness | As per ASME Requirement | As per ASME Requirement |
| 0.20 | 0.60 | 0.50 | 0.025 | 0.025 | 0.80–1.25 | 0.44–0.65 |
Ultrasonic Testing (UT) – EN 10160 / ASTM A578
Charpy Impact Test – on request
Tensile and Yield Testing
Chemical Analysis and Hardness Testing
Third-Party Inspection – TUV, DNV, SGS, Lloyd’s available on request
Steam boilers and superheaters
Pressure vessels and heat exchangers
High-temperature piping and tanks
Petrochemical and refinery units
Thermal and power generation equipment
Mill Test Certificates – EN 10204 3.1 / 3.2
UT and Mechanical Testing Reports
Impact Test Reports (if applicable)
Third-party inspection reports
Full traceability and quality assurance documentation
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Girgaon, Mumbai, Maharashtra 
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