Harsh Metalloys, based in Mumbai, India, has made a name for itself as a leading manufacturer and supplier of Stainless Steel 446 Coils. These coils are perfect for situations where extreme heat and corrosive environments are a concern. Crafted from ferritic stainless steel Grade 446, they boast impressive resistance to oxidation, sulfidation, and scaling, even at high temperatures. Available in various thicknesses, widths, and finishes, our coils comply with international standards like ASTM A240. Renowned for their thermal stability and cost-effectiveness, SS 446 coils find applications in industries such as power generation, petrochemicals, heat treatment, furnace construction, and industrial exhaust systems.
Stainless Steel 446 Coils are primarily made up of 23–27% Chromium, with very low levels of Carbon and minimal Nickel. This high Chromium content provides excellent resistance to scaling and corrosion in high-temperature settings. Typically, SS 446 coils have a tensile strength of about 485 MPa and a yield strength of around 275 MPa. While they may not be as formable as austenitic steels, they offer good dimensional stability and mechanical integrity when exposed to prolonged heat. Their strong performance in oxidizing and sulfidizing conditions makes them ideal for various industrial thermal and structural applications.
| 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. |
| Grade | C | Ni strong> | Si | S | Mn | P | Cr | Ti | |
| SS 446 | Min | – | – | – | – | – | – | 10.5 | 6x C |
| MAX | 0.08 | 0.5 | 1.00 | 0.045 | 1.00 | 0.045 | 11.75 | 0.75 | |
| 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 |
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SS 446 Slitting Coils are processed by slitting larger coils into narrower strips. They offer excellent resistance to high-temperature oxidation and thermal fatigue. These coils are ideal for use in applications involving high heat and severe environments.
SS 446 Hot Rolled Coils are produced through high-temperature rolling, making them suitable for heavy-duty applications. They possess high resistance to oxidation, particularly in environments where high heat is a concern. These coils are commonly used in industrial equipment and furnaces.
SS 446 Cold Rolled Coils are cold-formed to achieve a smoother finish and higher strength. These coils are ideal for precision applications, offering improved surface quality and tight tolerance. They maintain excellent resistance to heat and corrosion.
Stainless Steel 446 HR Slitting Coils are hot-rolled and then slit into narrow widths for further processing. They offer superior oxidation resistance and high strength at elevated temperatures. These coils are widely used in industries like aerospace and power generation.
Stainless Steel 446 Slitting Coils are designed for applications requiring high-temperature strength and corrosion resistance. These coils are slit into precise widths and are ideal for high-stress environments. They maintain their mechanical properties even at extreme temperatures.
AISI 446 Slitting Coils are manufactured from high-alloy stainless steel, offering excellent resistance to thermal fatigue and oxidation. They are commonly used in applications such as furnaces, kilns, and combustion chambers. The slitting process ensures flexibility for different industrial needs.
We are committed to delivering the highest quality Stainless Steel 446 Coils to our clients. For their excellent quality, these coils undergo a series of stringent testing processes before dispatch. These tests include hardness testing, chemical analysis through spectro analysis, positive material identification (PMI) testing, flattening testing, micro and macro tests, pitting resistance testing, flaring testing, and intergranular corrosion (IGC) testing. Besides that, we also provide third-party inspection certificates for the assurance of our clients in respect of the excellent quality and reliability of our Stainless Steel 446 Coils for a wide variety of industrial applications.
Stainless Steel 446 Coils are widely used in industries that require heat and corrosion-resistant materials. Common applications include furnace linings, kiln components, heat exchanger parts, and incinerator construction. They are also used in petrochemical refineries, boiler systems, power plants, and exhaust ducts where materials are exposed to sulfur-rich gases and extreme temperatures. The coils are ideal for fabrication into sheets, strips, and panels for industrial and structural use. Their excellent resistance to scaling, thermal fatigue, and warping ensures long-term performance in harsh operating environments, making them a reliable choice for high-temperature engineering solutions.
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