Harsh Metalloys is a reputable manufacturer and supplier of Stainless Steel 321 coils, proudly based in Mumbai, India. We specialize in providing top-notch stainless steel coil solutions that are specifically designed for high-temperature and corrosive environments. Our SS 321 coils are crafted from premium raw materials and cutting-edge technology, ensuring they are durable, strong, and highly resistant to oxidation. We cater to a diverse range of industries, including petrochemical, thermal processing, aerospace, and power generation, and have built a solid reputation for delivering dependable products, prompt service, and complete customer satisfaction throughout India and the global stainless steel market.
Our Stainless Steel 321 coils are made from a titanium-stabilized austenitic stainless steel alloy, featuring 17–19% chromium and 9–12% nickel. The inclusion of titanium significantly boosts resistance to intergranular corrosion after welding. With a tensile strength of about 515 MPa and a yield strength of around 205 MPa, these coils maintain excellent mechanical properties even at elevated temperatures and can withstand oxidation up to 870°C. They also offer good weldability, formability, and resistance to stress rupture and creep, making them perfect for high-heat and mildly corrosive environments.
| 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 |
| 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 |
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Stainless Steel 321 HR slitting coils are hot-rolled, slit stainless steel strips, offering excellent heat and corrosion resistance. They are used in industries requiring high durability and precision.
Stainless Steel 321 slitting coils are precision-cut strips of heat-resistant stainless steel, ideal for applications requiring high corrosion resistance and strength, commonly used in aerospace, automotive, and industrial sectors.
AISI 321 slitting coils are stainless steel strips with excellent heat and corrosion resistance, processed by slitting. They’re suitable for applications in aerospace, automotive, and high-temperature environments.
We ensure that our documentation for Stainless Steel 321 Coils is detailed and reliable to provide complete transparency. The documents include a commercial invoice, a packaging list, a fumigation certificate, a heat treatment chart, and a quality assurance plan. The package further comprises an NABL-approved lab test report for confirmation against rigorous standards. For enhancing our commitment to quality, we provide several test certificates such as MTC according to EN 10204/3.1b, PMI Test Certificate, 100% radiography test report, and a Third-Party Inspection Certificate. Such strong measures guarantee 100% client satisfaction and confidence in the integrity of our Stainless Steel 321 Coils.
You’ll find Stainless Steel 321 coils commonly used in heat exchangers, furnace linings, exhaust systems, pressure vessels, and high-temperature process piping. Their impressive resistance to oxidation, scaling, and thermal fatigue makes them ideal for applications in petrochemical plants, power stations, and aerospace. Additionally, SS 321 coils are well-suited for welded equipment that needs to perform in harsh chemical environments. Thanks to their structural stability under thermal stress and resistance to intergranular attack, these coils are a go-to choice for industries that demand long-lasting, reliable materials for high-temperature service conditions.
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