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Nial Sheets and Plates is a reputable manufacturer and supplier of Stainless Steel 321H Sheets and Plates based in Houston, USA. They specialize in providing top-notch materials designed for high-temperature, high-pressure, and corrosive environments. Stainless Steel 321H is a stabilized austenitic stainless steel that includes titanium to enhance its resistance to intergranular corrosion, along with a higher carbon content compared to standard 321, which boosts its strength at elevated temperatures. Crafted to meet international standards, Nial’s 321H sheets and plates find extensive use in sectors like petrochemical, aerospace, thermal processing, and power generation, where heat resistance and structural integrity are crucial.
These Stainless Steel 321H Sheets and Plates mainly consist of chromium (17–19%), nickel (9–12%), and titanium, with a higher carbon content (up to 0.10%) to improve creep strength. They boast a tensile strength ranging from about 515 to 750 MPa and a yield strength of around 205 MPa, along with commendable elongation and toughness. The titanium stabilization helps prevent carbide precipitation during welding, ensuring that the material remains resistant to intergranular corrosion and oxidation at temperatures reaching up to 900°C (1650°F).
| Specifications | : | ASTM A240 / ASME SA240 |
| Thickness | : | 4mm-100mm |
| Width | : | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
| Length | : | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc |
| Surface | : | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, 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, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc. |
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
| SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
| 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 |
| Surface Finish | Definition | Application |
|---|---|---|
| 2B | Those finished, after cold rolling, by heat treatment, pickling or other equivalent treatment and lastly by cold rolling to given appropriate luster. | Medical equipment, Food industry, Construction material, Kitchen utensils. |
| BA | Those processed with bright heat treatment after cold rolling. | Kitchen utensils, Electric equipment, Building construction. |
| NO.3 | Those finished by polishing with No.100 to No.120 abrasives specified in JIS R6001. | Kitchen utensils, Building construction. |
| NO.4 | Those finished by polishing with No.150 to No.180 abrasives specified in JIS R6001. | Kitchen utensils, Building construction, Medical equipment. |
| HL | Those finished polishing so as to give continuous polishing streaks by using abrasive of suitable grain size. | Building Construction. |
| NO.1 | The surface finished by heat treatment and pickling or processes corresponding there to after hot rolling. | Chemical tank, pipe |
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 321H sheets and plates provide excellent corrosion resistance, especially in high-temperature environments. They are extremely durable, resistant to oxidation, and are curing up to 870°C (1600°F). The intergranular corrosion resistance makes them ideal for welding-related applications. The stability of the composite is enhanced by the addition of titanium, which helps prevent carbide precipitation. Stainless steel 321 is also known for its durability, durability and ability to maintain structural integrity under extreme conditions. These properties make it suitable for industries such as aerospace, chemical and power generation.
Stainless Steel 321H Sheets and Plates are perfect for applications that require prolonged exposure to high temperatures and corrosive conditions. They are commonly used in heat exchangers, boiler components, furnace parts, pressure vessels, and equipment for high-temperature chemical processing. In the aerospace sector, these materials are utilized in jet engine components and exhaust systems. Thanks to their resistance to scaling, excellent weldability, and mechanical stability under thermal stress, they are a reliable choice for fabrications that need to perform well over the long haul in demanding, high-heat environments.
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Houston, TX 77041
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