naresh@diamondalloysinc.com - GST NO. : 27AQCPC2714K1Z4
- View Mobile Number
500 Kilogram (MOQ)
| Business Type | Manufacturer, Exporter, Supplier, Retailer, Trader, Distributor, Importer |
| Type | Plates |
| Material | 1% Chromium - 0.5% Molybdenum Alloy Steel |
| Application | Boilers, Pressure Vessels, Heat Exchangers, Oil & Gas Processing Units, Chemical Plants |
| Click to view more | |
Product Details
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 Features-
Excellent 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
