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Renowned for producing and supplying high-quality stainless steel 321 coils and slitting coils, Kunj Sheets and Plates is based in Chennai, India. Kunj is known for providing premium stainless steel solutions to a range of industries, such as power generation, chemical processing, and aerospace. The titanium-stabilized austenitic alloy stainless steel 321 is renowned for its exceptional strength at high temperatures and resistance to intergranular corrosion. Kunj is a favoured supplier of dependable and high-performing stainless steel coils in India and overseas because it guarantees precise manufacturing, superior surface finish, and adherence to global quality standards.
About 17–19% chromium and 9–12% nickel make up stainless steel 321, which is stabilised with titanium (at least five times the carbon content) to stop carbide precipitation. It provides improved defence against intergranular corrosion and oxidation. The alloy’s elongation is 40%, its yield strength is 205 MPa, and its tensile strength is approximately 515 MPa. Even at temperatures as high as 870°C, its mechanical characteristics hold steady. Because of its excellent formability and weldability, SS 321 is particularly well-suited for applications that require extended exposure to high temperatures and corrosive conditions.
| Specifications | ASTM A240, ASME SA240 |
| Standard | JIS, ASTM, AISI, GB, EN, DIN |
| Surface | 2B, BA, HL, No. 4, Mirror etc. |
| Finish | Cold rolled, Hot rolled |
| Thickness | 0.3mm–100mm |
| Size | 1000mm, 1219mm, 1250mm, 1500mm, 1524mm, 2000mm |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50 mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 321 | 515 | 205 | 40 | 95 | 217 |
| 321H | 515 | 205 | 40 | 95 | 217 |
| 347 | 515 | 205 | 40 | 92 | 201 |
| 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 |
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 Coils and Slitting Coils offer exceptional resistance to high temperatures and oxidation, making them ideal for use in heat exchangers, aerospace components, and chemical processing industries. The addition of titanium stabilizes the alloy, preventing carbide precipitation and ensuring excellent weldability. These coils also provide strong resistance to intergranular corrosion, pitting, and crevice corrosion. With high tensile and yield strength, they maintain structural integrity under extreme conditions. Their durability, combined with excellent formability and resistance to scaling, makes them a reliable choice for demanding industrial applications.
Yes, we offer custom sizes for Stainless Steel 321 Coils to meet specific project needs. Our team at Kunj Sheets and Plates is dedicated to providing tailored solutions for all your requirements. For more details, contact us at sales@aaronsheetsplates.com.
Stainless Steel 321 Coils and Slitting Coils are widely used in industries where high-temperature and corrosion resistance are essential. They are commonly found in aerospace, chemical processing, and power generation applications, including heat exchangers, furnace parts, and exhaust systems. These coils are also ideal for use in marine environments, automotive exhaust systems, and welded equipment exposed to high temperatures. Their excellent resistance to intergranular corrosion makes them suitable for applications in food processing, pharmaceuticals, and industries where welding is required in high-heat conditions.
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