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Boikanyo Sheets and Plates, a reputable manufacturer and supplier located in Cape Town, South Africa, is dedicated to providing top-notch Stainless Steel 321 Sheets and Plates to a variety of industries. Renowned for their durability, resistance to corrosion, and impressive strength, these sheets and plates are specifically crafted to handle the rigors of high-temperature applications. With a commitment to innovation, stringent quality standards, and ensuring customer satisfaction, Boikanyo guarantees that every Stainless Steel 321 product adheres to international specifications, delivering outstanding performance for construction, chemical, petrochemical, and industrial projects both locally and globally.
Stainless Steel 321 Sheets and Plates are mainly made up of chromium, nickel, and titanium, which significantly improve their resistance to intergranular corrosion and oxidation at high temperatures. They boast an impressive tensile strength of about 515 MPa and a yield strength of 205 MPa, along with a remarkable elongation capacity of 40%. The addition of titanium enhances their durability in high-temperature environments, making them a superior choice compared to standard grades. With a density of 7.9 g/cm³ and a melting point ranging from 1398 to 1446°C, Stainless Steel 321 offers exceptional mechanical stability, ensuring reliable performance even in the toughest working conditions.
| 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.
Stainless steel 321 sheets and plates are widely used in applications requiring corrosion resistance and high temperature stability. Common applications include aerospace components, such as turbine blades and exhaust systems, heat exchangers, reactors and other chemical processes in addition to energy production and petrochemical processes in weldments, pressure vessels and heat treated products around. The coating’s resistance to oxidation and stress corrosion cracking also makes it suitable for use in food processing, marine environments, and other harsh environments.
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