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Nial Sheets and Plates is a reputable manufacturer and supplier of Stainless Steel 348H Sheets and Plates based in Houston, USA. They provide top-notch materials specifically designed for high-temperature, high-pressure, and corrosion-resistant applications. Stainless Steel 348H is a stabilized austenitic stainless steel that includes columbium (niobium) and boasts a higher carbon content compared to standard 348, which boosts its strength and creep resistance when exposed to elevated temperatures. Nial ensures that these sheets and plates are produced to meet strict international standards, catering to industries like chemical processing, power generation, heat exchangers, and aerospace, all while delivering reliable and durable performance.
The composition of Stainless Steel 348H Sheets and Plates primarily features chromium (17–19%), nickel (9–13%), and columbium for stabilization, along with a higher carbon content (around 0.04–0.10%) than 348. This unique blend enhances mechanical strength and helps resist sensitization during prolonged exposure to high temperatures. The mechanical properties include a tensile strength of about 550–750 MPa and a yield strength of around 240 MPa, along with impressive ductility and resistance to intergranular corrosion. The alloy remains stable and resistant to oxidation, even when subjected to continuous thermal cycling.
| Specifications | ASTM A240 / ASME SA240 |
|---|---|
| Width | 1000mm / 1219mm /1250mm / 1500mm / 2000mm |
| Length | 2000 mm / 2440 mm / 2500 mm / 3000 mm / 6000 mm |
| Thickness | 0.1mm to 12 mm Thk |
| Hardness | Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc. |
| Finish | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Form | Coils, Foils, Rolls, Plain Sheet, Strip, Flats, Blank (Circle), Ring (Flange) etc. |
| Grade | Mn | P | C | S | Cr | Si | Ni | Fe | Co |
| SS 348H | 2.00 | 0.045 | 0.04-0.10 | 0.030 | 17.00-19.00 | 0.75 | 9.00-13.00 | – | – |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.9 g/cm3 | 1402 °C (2555 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 % |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 348H | 1.4546 | S34809 |
| Material | Size | Thickness |
| PLATES & SHEETS | 1000 mm x 2000 mm | 0.1mm To 100 mm Thickness |
| 1220 mm x 2440 mm (4′ x 8′) | ||
| 1250 mm x 2500 mm | ||
| 1500 mm x 3000 mm | ||
| 2000 mm x 4000 mm | ||
| 2000 mm x 2000 mm |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Stainless Steel 348H Sheets and Plates find extensive use in applications that require long-term exposure to high temperatures and corrosive environments. They are perfect for components in heat exchangers, boiler tubes, superheaters, pressure vessels, and reactor parts. In the chemical and petrochemical sectors, 348H is utilized for equipment that processes hot organic and inorganic chemicals. It’s also a great fit for exhaust manifolds, furnace parts, and high-temperature welded fabrications in power plants and refineries. With its strength, stability, and corrosion resistance, it stands out as a reliable choice for challenging thermal and structural conditions.
Stainless steel 348H sheets and plates are widely used at high temperatures due to their excellent resistance to oxidation and intergranular corrosion Common applications include components in medical devices, heat exchangers, power plants, and in the space industry. They are ideal for parts exposed to sulfuric environments or high temperatures, such as reactor cores, furnace components, piping systems and in addition stainless steel 348H is used in welded housings to ensure for durability and reliability in environments requiring high strength and corrosion resistance.
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Houston, TX 77041
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