naresh@diamondalloysinc.com - GST NO. : 27AQCPC2714K1Z4
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500 Kilogram (MOQ)
| Business Type | Manufacturer, Exporter, Supplier, Retailer, Trader, Distributor, Importer |
| Type | Alloy Steel Plates |
| Material | 9% Chromium, 1% Molybdenum Alloy Steel |
| Application | High-temperature And Pressure Service In Power Plants, Refineries, And Petrochemical Units |
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Product Details
ASME SA 387 Gr. 9 Cl. 1 / Cl. 2 Plates are 9% chromium and 1% molybdenum alloy steel plates designed for elevated temperature and pressure service, especially in power plants, refineries, and petrochemical units. They are known for their superior creep resistance, oxidation resistance, and mechanical strength in high-temperature environments.
The difference between Class 1 and Class 2 lies in tensile strength, with Cl.2 offering higher strength values while retaining similar chemical composition and service characteristics.
Key Features-
High-temperature oxidation and corrosion resistance
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Excellent thermal stability and creep strength
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Good fabrication, formability, and weldability
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Suitable for boilers, heat exchangers, and pressure vessels
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Delivered in normalized and tempered condition
| Grade | Grade 9 |
| Class | Class 1 & Class 2 |
| Alloy Content | 9% Chromium, 1% Molybdenum |
| Condition | Normalized and Tempered |
| Thickness | 6 mm – 100 mm |
| Width | Up to 3000 mm |
| Length | Up to 12000 mm |
| Surface Finish | Mill / Shot Blasted / Painted (on request) |
| 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 | 8.00–10.00 | 0.90–1.10 |
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Ultrasonic Testing – As per ASTM A578 or EN 10160
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Charpy V-Notch Impact Testing – Available on request
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Tensile, Yield, Elongation Testing
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Chemical Analysis & Hardness Testing
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Third-party Inspection – TUV, DNV, Lloyd’s, SGS (if required)
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High-temperature pressure vessels and reactors
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Steam pipelines and boiler components
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Heat exchangers and refinery equipment
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Thermal power plants and oil & gas plants
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Petrochemical and chemical processing units
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Mill Test Certificate – EN 10204 3.1 / 3.2
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Chemical & Mechanical Property Reports
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Heat Treatment Records
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Ultrasonic Test Report
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Third-party Inspection Certificates (upon request)
