ASME SA 387 Grade 91 Class 1/2 Sheets and Plates are high-performance alloy steels made from chromium, molybdenum, and vanadium, specifically crafted for high-temperature and high-pressure settings. Shalan Steel, a top-notch manufacturer and supplier located in Kuala Lumpur, Malaysia, offers these SA 387 Gr 91 Cl 1 and Cl 2 plates to various industries throughout Malaysia and Southeast Asia, catering to the rigorous demands of power generation and refinery operations.
This grade of steel features 9% chromium, 1% molybdenum, along with trace amounts of vanadium and niobium, which together provide outstanding creep strength, oxidation resistance, and durability at temperatures reaching up to 650°C. Both Class 1 and Class 2 plates undergo processes like normalization and tempering, along with stringent heat treatment and quality checks. The minimum yield strength is around 585 MPa, while the tensile strength varies between 620 and 795 MPa.
| Standard | ASTM A387 / ASME SA387 |
|---|---|
| Width | 1000mm-3000mm |
| Thickness | 1.0mm – 200mm |
| Production | Hot-Rolled (HR) / Cold-Rolled (CR) |
| Grade | C | Ni | Mn | S | V | Al | Si | Nb | Cr | Mo | Nitrogen | P |
| A387 GR.91 CL.1 & 2 | 0.06-0.15 max | 0.43 max | 0.25-0.66 max | 0.012 max | 0.16-0.27 max | 0.05 max | 0.18-0.56 max | 0.05-0.11 max | 7.90-9.60 max | 0.80-1.10 max | 0.025-0.080 max | 0.025 max |
| Grade | A387 GR.91 CL.1 &2 | |||
| A387 GR.91 CL.1 &2 | Thickness mm | Yield Min Mpa | Tensile Mpa | Elongation Min % |
| t≦50 | 415 | 585-760 | 18 | |
| 50<t≦200 | – | – | – | |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
ASME SA 387 Grade 91 Class 1/2 Sheets and Plates find their place in essential components such as pressure vessels, boiler headers, heat exchangers, and steam piping systems. Their remarkable creep resistance, mechanical properties, and corrosion resistance make them perfect for ultra-supercritical power plants, petrochemical facilities, and high-efficiency thermal systems that operate under extreme conditions.
ASME SA 387 Grade 91 Class 1 & 2 Plates and Sheets are utilized in high-temperature and high-pressure conditions due to their better strength and corrosion resistance. These plates are commonly used in the manufacturing of boilers, pressure vessels and heat exchangers. That require operating with confidence under extreme conditions. They are widely used in power generation, petrochemical, oil & gas, and refinery sectors where thermal stability and resistance to oxidation and corrosion are essential for seamless operation.
Shalan Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Kuala lumpur, Malaysia.
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