Welcome to Naing Steel, your trusted partner in Naypyidaw for high-performance steel solutions. We take pride in manufacturing and supplying premium materials that meet the rigorous demands of modern industry. Our Alloy Steel Grade 91 Coil is a testament to this commitment, engineered for exceptional strength and reliability in the most challenging environments. We understand that the success of your projects depends on the quality of your materials, which is why we ensure every coil delivers consistent, superior performance you can count on.
This specific alloy is carefully formulated with chromium, molybdenum, and vanadium, creating a material known for its remarkable strength and resistance. It maintains excellent tensile and yield strength even when exposed to intense heat, preventing deformation under heavy loads. Furthermore, Grade 91 offers outstanding creep resistance, meaning it can withstand constant stress at high temperatures over long periods without failing. This combination of properties makes it an incredibly durable and long-lasting choice for critical applications.
| 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.
Naing Steel based in Naypyidaw, Myanmar 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. Naing 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!
Because of its robust characteristics, Alloy Steel Grade 91 Coil is indispensable in sectors where safety and durability are non-negotiable. You will find it forming the backbone of power generation plants, used in high-temperature piping and boiler systems. It’s also crucial in the petrochemical industry for processing equipment and in demanding environments like industrial furnaces. Essentially, wherever there is a need for a material that can perform reliably under extreme pressure and heat, Grade 91 provides the necessary resilience and longevity.
Naing 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 Naypyidaw, Myanmar.
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