Harsh Metalloys, a prominent manufacturer and supplier located in Mumbai, India, proudly provides top-notch Stainless Steel 409 Coils designed for applications that demand excellent heat resistance and moderate corrosion protection—all at a budget-friendly price. SS 409 is a ferritic stainless steel celebrated for its ability to withstand oxidation and corrosion in mildly aggressive environments, especially at higher temperatures. These coils are crafted to comply with ASTM A240 and other international standards, ensuring reliable quality and performance. Available in a variety of widths, thicknesses, and surface finishes, SS 409 coils are perfect for automotive uses, exhaust systems, heat exchangers, and industrial ducting.
Stainless Steel 409 Coils generally consist of 10.5–11.75% Chromium, with low Carbon content (≤ 0.08%) and may have small amounts of Titanium added for stabilization. This blend offers solid resistance to oxidation and corrosion at temperatures reaching up to 650°C. The material boasts moderate tensile strength (around 380–450 MPa), good formability, and excellent weldability. These coils cannot be hardened through heat treatment but display good ductility. SS 409’s thermal conductivity and resistance to scaling make it a great choice for applications that involve heat cycling and mild corrosive conditions, all while maintaining structural integrity.
| Standard | ASTM A240, ASME SA240 |
| Thickness | 0.1mm to 12 mm Thk |
| Coil Width | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm etc. |
| Coil Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm etc. |
| Surface | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sandblast, Brush, etching. |
| Finish | Hot rolled (HR), Cold rolled (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated), Galvanized etc. |
| Tensile Strength(MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Rockwell B (HRB) max | Brinell (HB) max |
| 450 | 240 | 25 | 75 | 131 |
| Grade | C | Ni strong> | Si | S | Mn | P | Cr | Ti | |
| SS 409 | Min | – | – | – | – | – | – | 10.5 | 6x C |
| MAX | 0.08 | 0.5 | 1.00 | 0.045 | 1.00 | 0.045 | 11.75 | 0.75 | |
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SS 409 slitting coils are known for their great formability and resistance to corrosion, making them perfect for automotive exhaust systems, industrial panels, and any fabrication that needs custom widths and precise cuts.
SS 409 hot rolled coils offer solid strength and good oxidation resistance, making them a popular choice in automotive, structural, and high-temperature applications where durability and weldability are key.
SS 409 cold rolled coils provide a smooth surface finish and precise dimensions, making them ideal for precision components, appliance manufacturing, and applications where aesthetics matter, like decorative or exposed parts.
409 HR slitting coils blend heat resistance with strength, making them suitable for heavy-duty fabrication, industrial enclosures, and automotive uses that require converting wide coils to narrow ones.
409 slitting coils are recognized for their excellent thermal performance and moderate corrosion resistance, making them a great fit for exhaust systems, welded tubing, and formed structural components.
AISI 409 slitting coils are appreciated for their weldability and resistance to scaling, making them a preferred choice in industries like automotive, construction, and HVAC for customized coil applications.
Stainless Steel 409 Coils are mainly found in automotive exhaust systems, catalytic converters, mufflers, and manifold components, thanks to their impressive resistance to high temperatures and their ability to be easily shaped. Beyond that, they’re also used in heat exchangers, industrial ventilation systems, furnace parts, and equipment that faces moderate corrosive conditions. SS 409 coils have become a go-to option in the construction, transportation, and energy sectors for making ducts, panels, and thermal shields. Their combination of performance, weldability, and cost-effectiveness makes them a great choice for fabricators and OEMs looking for dependable, corrosion-resistant materials that can handle high temperatures and moderate mechanical stress.
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