naresh@diamondalloysinc.com - GST NO. : 27AQCPC2714K1Z4
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500 Kilogram (MOQ)
| Business Type | Manufacturer, Exporter, Supplier, Retailer, Trader, Distributor, Importer |
| Type | Plates |
| Material | Chromium-molybdenum Alloy Steel |
| Application | Elevated Temperature And Pressure Service In Boilers, Heat Exchangers, Pressure Vessels, Oil Refineries, And Chemical Plants |
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Product Details
ASME SA 387 Grade 22 Class 1 and Class 2 Plates are chromium-molybdenum alloy steel plates designed for elevated temperature and pressure service, especially in boilers, heat exchangers, pressure vessels, oil refineries, and chemical plants. With a Cr-Mo composition (2.25% Cr, 1% Mo), these plates exhibit excellent creep resistance, oxidation resistance, and thermal stability.
Class 2 provides higher tensile strength than Class 1 while both offer excellent weldability and durability under harsh working conditions.
Key Features-
Superior mechanical strength at high temperatures
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Excellent creep and rupture resistance
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Good resistance to oxidation, corrosion, and hydrogen attack
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Available in normalized and tempered condition
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Compatible with welding and forming processes
| Grade | Grade 22 |
| Class | Class 1 and Class 2 |
| Alloy Content | Chromium ~2.00–2.50%, Molybdenum ~0.87–1.13% |
| Delivery Condition | Normalized and Tempered |
| Thickness | 6 mm – 120 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 |
| 0.15 | 0.60 | 0.50 | 0.025 | 0.025 | 1.90–2.60 | 0.87–1.13 |
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Ultrasonic Testing (UT) – As per EN 10160 / ASTM A578
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Charpy Impact Testing – Optional or as per order
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Tensile and Elongation Testing
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Chemical Composition and Hardness Testing
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Third-party Inspection – TUV, SGS, Lloyd’s, DNV (if required)
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High-temperature pressure vessels and reactors
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Steam boilers, economizers, and superheater components
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Heat exchangers and thermal process tanks
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Oil & gas refinery and petrochemical infrastructure
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Power generation and energy sector equipment
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Mill Test Certificate – EN 10204 3.1 / 3.2
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Mechanical & Chemical Test Reports
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Ultrasonic Test Reports
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Heat Treatment Charts and Dimensional Records
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Third-party inspection reports (upon request)
