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Smith Fittings, a top-notch manufacturer and supplier located in Canberra, Australia, specializes in high-quality **Stainless Steel 321 Sheet and Plates**. These products are celebrated for their remarkable high-temperature strength, resistance to corrosion, and overall durability. Crafted with cutting-edge manufacturing techniques and premium raw materials, these sheets and plates deliver exceptional dimensional accuracy, a smooth surface finish, and long-lasting reliability. Smith Fittings is committed to ensuring that its Stainless Steel 321 offerings comply with international quality standards, making them perfect for a variety of applications in industries like chemical, aerospace, and high-temperature environments. Their unique stabilized composition effectively prevents intergranular corrosion during welding, guaranteeing consistent performance and structural integrity even in the toughest conditions.
**Stainless Steel 321 Sheet and Plates** are a type of stabilized austenitic stainless steel, primarily made up of chromium (17–19%), nickel (9–13%), and titanium, which boosts their resistance to intergranular corrosion. This alloy boasts a tensile strength of around 515 MPa, along with excellent ductility, toughness, and oxidation resistance at elevated temperatures reaching up to 870°C. Its impressive mechanical properties, paired with good weldability and formability, make it an ideal choice for applications that require prolonged exposure to thermal and mechanical stress while ensuring structural stability and performance in critical situations.
| 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 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(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 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
| 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 321 sheets and plates have several key advantages, making them ideal for high temperature applications. They exhibit excellent resistance to oxidation, corrosion and carburization, especially at temperatures up to 900°C (1650°F). The titanium content improves the stability of the alloy and prevents carbide precipitation during welding, increasing its durability and strength. Stainless steel 321 is also highly resistant to stress corrosion cracking and provides excellent formability and weldability. These characteristics make it ideal for industries such as aerospace, chemical processing and power generation, where reliability and long-term performance are critical.
You’ll find **Stainless Steel 321 Sheet and Plates** widely utilized across various sectors, including chemical processing, petrochemical, aerospace, and power generation. They’re perfect for crafting heat exchangers, furnace components, exhaust systems, pressure vessels, and structural frameworks that operate under high temperatures. The alloy’s ability to resist carbide precipitation during welding makes it a great fit for piping systems, boiler parts, and aircraft components. Plus, these sheets and plates are also employed in architectural structures, marine equipment, and industrial machinery where strength, corrosion resistance, and high-temperature stability are crucial, ensuring long-lasting performance.
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