From the industry-driven city of Hamilton, Latham Steel has built a reputation as a trusted New Zealand manufacturer and supplier, specializing in high-performance materials for demanding applications. Our focus on the ASME SA 387 Grade 11 Class 1 & 2 sheet and plate reflects our commitment to serving sectors where safety and durability are non-negotiable. We understand that the integrity of your project hinges on the quality of its core components, which is why we ensure these critical materials meet the most stringent international standards for performance and reliability.
The composition of this chromium-molybdenum alloy steel is specifically engineered for strength under pressure and high temperatures. It contains chromium for enhanced oxidation resistance and molybdenum which improves strength and helps it resist creep. Mechanically, it must meet strict requirements for tensile and yield strength, ensuring it can handle significant stress. The Class 1 & 2 designations relate to the heat treatment process, with Class 2 undergoing more stringent normalization and tempering for superior notch toughness, making it suitable for more critical service conditions.
| Standard | ASTM A387 / ASME SA387 |
|---|---|
| Width | 1000mm-3000mm |
| Thickness | 1.0mm – 200mm |
| Production | Hot-Rolled (HR) / Cold-Rolled (CR) |
| Grade | C | Si | Mn | P | S | Cr | Mo |
| A387 Gr. 11 CL 1 / 2 | 0.04-0.17 max | 0.44-0.86 max | 0.35-0.73 max | 0.035 max | 0.035 max | 0.94-1.56 max | 0.40-0.70 max |
| Grade | A387 Gr. 11 CL 1 / 2 | |||
| A387 Gr. 11 CL 1 / 2 | Thickness mm | Yield Min Mpa | Tensile Mpa | Elongation Min % |
| t≦50 | 240 | 415-585 | 22 | |
| 50<t≦200 | 240 | 415-585 | 19 | |
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 is a trusted manufacturer and supplier of high-quality ASME SA 387 Grade 11 Class 1/2 Sheet and Plates in Hamilton, New Zealand. We specialize in premium steel products, including Alloy Steel, Carbon Steel, Mild Steel and Galvanized Steel, with a strong focus on Carbon Steel Sheet and Plates. Our extensive inventory also includes Pipes, Tubes, Flanges, Forged Fittings and Bars. Committed to fast delivery and exceptional customer service, we use only the finest raw materials to ensure superior strength, durability and performance for critical industrial applications. Contact us today for all your ASME SA 387 Grade 11 Class 1/2 Sheet and Plates needs!
These plates are indispensable in environments where both high temperature and pressure are a constant challenge. You will typically find them forming the shells of heavy-duty pressure vessels, critical reactors, and columns within petrochemical plants and refineries. Their reliable performance also makes them a go-to material for components in power generation infrastructure and other high-heat industrial systems. Essentially, they are chosen for applications where failure is not an option, providing the robust containment needed for safe and efficient operations over the long term.
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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