From the heart of Hamilton, New Zealand, Latham Steel has built a strong reputation for delivering high-performance materials to demanding industries. We take pride in supplying our clients with premium Alloy Steel Grade 91 Coil, a material engineered for resilience in the toughest environments. When your projects involve extreme pressures and temperatures, you need a steel that won’t falter, and that’s precisely the robust reliability we provide, backed by our commitment to quality and local expertise.
The strength of Grade 91 lies in its sophisticated chemistry, primarily a blend of chromium and molybdenum enhanced with vanadium and niobium. This composition gives it exceptional mechanical properties, including remarkable creep strength, which allows it to withstand immense stress under high heat for extended periods. It also offers excellent toughness and good corrosion resistance, making it a truly durable and high-performing material 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.
Jaxon Steel based in Hamilton, New Zealand 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. Jaxon 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!
This exceptional blend of properties makes Grade 91 coil ideal for the most challenging applications. You’ll find it essential in power generation, forming critical components like high-pressure steam pipes and superheater tubes in fossil fuel and nuclear plants. It’s also perfectly suited for high-temperature piping in petrochemical refineries and within heavy industrial furnaces, where its ability to maintain integrity under sustained thermal stress is invaluable for both safety and operational efficiency.
Latham 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 Hamilton, New Zealand.
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