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Stainless Steel 348H Sheets and Plates are composed of 17–20% chromium, 8–11% nickel, and are stabilized with niobium (columbium) to prevent carbide precipitation. The high carbon content improves high-temperature strength, making it suitable for elevated service conditions. It offers a tensile strength of approximately 515 MPa, a yield strength of around 205 MPa, and excellent creep resistance. This grade performs well in oxidizing environments and retains good weldability and formability. 348H is also resistant to intergranular corrosion, especially in continuous service at high temperatures, making it highly dependable for heat-intensive operations.
Stainless Steel 348H Sheets and Plates are primarily used in high-temperature and high-pressure applications. In the power generation sector, they are used in boiler tubes, steam piping, and superheaters. In petrochemical and chemical processing, they serve in heat exchangers, reactor vessels, and pressure tanks due to their resistance to intergranular corrosion. The aerospace and pharmaceutical industries also use them where thermal and structural stability are essential. Their high carbon content enhances mechanical strength, making them ideal for continuous operation at elevated temperatures. Additionally, their weldability and oxidation resistance make them suitable for use in furnace and heater components.
| 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 provide excellent high-temperature corrosion resistance, making them ideal for applications in industries such as aerospace and chemical processes Strength and stability are retained under a variety of conditions in severe cases, especially in sulfur compounds. The alloy’s increased intergranular corrosion resistance, and ability to withstand prolonged exposure to high temperatures make it perfect for welded structures Furthermore, stainless steel 348H offers durability, ease of manufacture, and excellent oxidation resistance. These characteristics ensure long-term performance and reliability in harsh environments.
Stainless Steel 348H Sheets and Plates are composed of 17–20% chromium, 8–11% nickel, and are stabilized with niobium (columbium) to prevent carbide precipitation. The high carbon content improves high-temperature strength, making it suitable for elevated service conditions. It offers a tensile strength of approximately 515 MPa, a yield strength of around 205 MPa, and excellent creep resistance. This grade performs well in oxidizing environments and retains good weldability and formability. 348H is also resistant to intergranular corrosion, especially in continuous service at high temperatures, making it highly dependable for heat-intensive operations.
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