Mitchell Stainless, headquartered in Hamilton, New Zealand, is a reliable manufacturer and supplier of high-performance Stainless Steel 321 coils built for demanding environments. Designed to withstand heat, stress, and time, SS 321 coils deliver stability where ordinary stainless steels fail. With precise processing, consistent thickness, and strict quality control, Mitchell Stainless ensures coils that perform under pressure. Known for their strength, thermal resistance, and fabrication ease, these coils are trusted across critical industries. When durability, heat resistance, and long service life matter, Stainless Steel 321 coils from Mitchell Stainless stand as a dependable solution.
Stainless Steel 321 Coils are iron, chromium 17-19%, nickel 9-12% containing elements. The titanium is added at 5xC%. This alloy shows higher resistance to oxidation and corrosion in high temperature environments. The mechanical properties it has include tensile strength of 505-760 MPa, high yield strength, and excellent strength. This stability at high temperatures, resistance to intergranular corrosion, and weldability have led to applications in aerospace, chemical, and food industries where the long term performance and reliability are guaranteed.
| 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.
Stainless Steel 321 coils are widely used in applications requiring excellent resistance to high temperatures and corrosion. The main uses include aerospace applications in aircraft components, chemical processing equipment, heat exchangers, and pressure vessels. These coils are also used in the automotive industry, especially for exhaust systems, food processing, power plants, and marine environments. Their resistance to oxidation and sensitization makes them ideal for applications under high temperatures and corrosive conditions.
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