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Nizar Sheetsandplates, a well-respected manufacturer and supplier located in Amman, Jordan, specializes in top-notch Stainless Steel 321H Sheets and Plates, perfect for high-temperature and pressure applications. SS 321H is essentially the high-carbon variant of grade 321, offering improved creep strength and outstanding structural stability when exposed to prolonged heat. Renowned for its durability, resistance to oxidation, and excellent weldability, this grade is a go-to choice in industries that demand reliable performance under extreme conditions. Nizar Sheetsandplates prides itself on precise engineering, rigorous quality control, and prompt delivery, making it a trusted provider of stainless steel products for clients in the petrochemical, power generation, thermal processing, and other challenging sectors.
Stainless Steel 321H Sheets and Plates are composed of chromium (17–19%), nickel (9–12%), and a higher carbon content (0.04–0.10%) to boost strength at elevated temperatures. This alloy boasts a tensile strength of about 515 MPa and a yield strength of roughly 205 MPa, along with impressive creep resistance. The addition of titanium stabilizes the material, providing extra protection against intergranular corrosion during high-temperature exposure. SS 321H also showcases good ductility, weldability, and oxidation resistance up to 900°C. Its robust mechanical performance and thermal stability make it ideal for heavy-duty industrial components that face long-term heat cycles.
| 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 find extensive use in high-temperature industrial settings where elevated strength and thermal stability are crucial. Typical applications include heat exchangers, refinery equipment, boiler components, furnace parts, exhaust systems, and petrochemical processing units. Thanks to its resistance to oxidation and creep, this alloy is well-suited for heavy-duty thermal equipment and high-pressure systems. It’s also commonly used in power plant piping and chemical processing applications, ensuring reliability in demanding environments.
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