Latham Steel, a well-respected manufacturer and supplier based in Hamilton, New Zealand, specializes in high-quality SA 515 Grade 70 sheets and plates designed for high-temperature and medium-to-high-pressure industrial applications. This carbon-silicon steel grade is a go-to choice for fabricating boilers and pressure vessels, thanks to its impressive heat resistance, reliable strength, and consistent performance under thermal stress. Latham Steel guarantees precise dimensions, a smooth surface finish, and strict adherence to ASTM standards, making these plates a trustworthy option for challenging environments. Industries that need durable steel that can hold its own at elevated temperatures often turn to SA 515 Grade 70.
SA 515 Grade 70 is crafted with carefully controlled amounts of carbon, silicon, manganese, phosphorus, and sulfur, all designed to enhance its performance at elevated temperatures. It boasts higher tensile and yield strength compared to lower grades, along with good ductility and stable mechanical behavior. The material maintains consistent hardness and reliable toughness, even when subjected to continuous heat. With the right welding techniques, SA 515 Grade 70 shows excellent weldability and resistance to deformation under thermal loads. Its balanced chemistry ensures it’s a dependable choice for boilers, pressure vessels, and heating equipment operating in high-temperature conditions.
| Specifications | ASTM A515 Gr. 60 / ASME A515 Grade 60 | |
| Thickness |
| |
| Length | 3000 mm – 8000 mm | |
| Width | 1500-3500mm | |
| Form | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Strip, Flats, Blank (Circle), Ring (Flange) | |
| Finish | Cold rolled sheet (CR), Hot rolled plate (HR) | |
| Hardness | Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc. |
| Grade | C | Mn | P | S | Si |
|---|---|---|---|---|---|
| A515 Grade 70 | 0.30-0.35 | 1.30 max | 0.035 max | 0.035 max | 0.13-0.45 |
| Grade | Yield | Tensile | Thickness | Elongation |
|---|---|---|---|---|
| A515 Grade 70 | MPa -551 min | MPa – 485-620 |  50-200mm | 17-21% |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
SA 515 Grade 70 sheets and plates find their place in various industries that need steel to perform reliably at high temperatures. Common applications include boilers, steam drums, pressure vessels, refinery heaters, and heat-transfer equipment. This grade is also utilized in petrochemical plants, power generation units, industrial furnaces, thermal processing equipment, and high-temperature storage tanks. Its robust resistance to heat-induced stress makes it ideal for fireboxes, furnace shells, and components that experience thermal cycling. Engineers appreciate its reliability and performance in demanding environments, ensuring safety and efficiency in their operations.
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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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