Phanuphong Steel and Plates, a top-notch manufacturer and supplier based in Bangkok, Thailand, specializes in high-quality Alloy Steel Grade 91 Coils, perfect for those demanding high-temperature and high-pressure industrial applications. With a reputation built on cutting-edge manufacturing techniques and rigorous quality control, Phanuphong Steel guarantees that every coil offers outstanding strength, durability, and thermal stability. These Alloy Steel Grade 91 Coils are specifically designed to endure extreme operating conditions, making them a go-to choice for industries like power generation, petrochemicals, and heavy machinery. Thanks to their dependable delivery, expert technical support, and tailored solutions, Phanuphong Steel has become a trusted name for high-performance Alloy Steel Grade 91 Coils throughout Thailand and beyond.
Crafted from premium chromium-molybdenum-vanadium steel, Alloy Steel Grade 91 Coils feature a meticulously controlled chemical composition that boosts their mechanical and thermal properties. These coils boast a tensile strength ranging from about 600 to 750 MPa, a yield strength of 415 to 550 MPa, and an elongation of 20%, ensuring they perform exceptionally well under high-temperature and high-pressure scenarios. The precise alloying and heat treatment processes contribute to their superior toughness, creep resistance, and weldability. With consistent mechanical properties, high durability, and reliable performance, Alloy Steel Grade 91 Coils are perfectly suited for critical applications in challenging industrial settings.
| Specifications | ASTM A387 / ASME SA387 |
| Standard | ASTM, ASME and API |
| Thickness | 4.0mm – 100mm |
| Specialize | Shim Sheet, Perforated Sheet, B. Q. Profile. |
| Form | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) |
| Finish | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Hardness | Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc. |
| Grade | ASTM A387 GR.91 |
| Grade | C | Ni | Mn | S | V | Al | Si | Nb | Cr | Mo | Nitrogen | P |
| A387 GR.91Â | 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 | 0.80-2.10 max | 0.025-0.080 max | 0.025 max |
| Grade | A387 GR.91 CL.2 | |||
| A387 GR.91Â | 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.
Phanuphong Steel based in Bangkok, Thailand is a trusted manufacturer and supplier for Alloy Steel Grade 91 Coils of great quality. In fact, we have earned our reputation for providing a variety of top-notch steel products-such as Structural Steel, Alloy Steel, Carbon Steel, Mild Steel, and Galvanized Steel-with emphasis on Structural Steel Sheets and Plates. Basic product lines include a complete range of Pipes, Tubes, Flanges, Forged Fittings, Bars, and other forms. Phanuphong Steel is committed to its delivery and customer service, thus ensuring that they procure the best raw materials to guarantee high strength and durability with performance specifically for critical industrial applications. Contact us anytime for your Structural Steel Sheet and Plate needs!
These coils are widely utilized in sectors that demand high-strength, heat-resistant steel for essential applications. They’re ideal for crafting boiler tubes, pressure vessels, piping systems, and superheater components in power plants, petrochemical facilities, and the oil and gas industry. Their remarkable thermal stability, creep resistance, and toughness make them a reliable choice for high-temperature and high-pressure operations, ensuring long-lasting safety and performance. Additionally, Alloy Steel Grade 91 Coils find their place in heavy machinery applications, further showcasing their versatility and reliability in demanding environments.
Phanuphong 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 Bangkok, Thailand.
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