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With its headquarters located in Chennai, India, Vinit Stainless is a reputable manufacturer and supplier of premium stainless steel products. Supported by the core principles of dependability, excellence, and client dedication, we offer a broad range of stainless steel solutions to a variety of industries, including manufacturing, construction, and the automotive sector. One of our main products is stainless steel 309H sheets and plates, which are made especially for high-temperature uses and have remarkable oxidation and corrosion resistance. Our products are designed to satisfy both national and international standards, and they provide the precision, reliable performance, and long-term durability that industries depend on in demanding settings.
Austenitic heat-resistant stainless steel 309H is renowned for its ability to withstand oxidation and high temperatures. The composition has a low carbon content that is optimized for high temperature performance, 24–26% chromium, 12–22% nickel, and the remainder mostly iron. Tensile strength of roughly 515 MPa, yield strength of roughly 205 MPa, and elongation of roughly 40% are some of its mechanical characteristics. Because of its exceptional formability, weldability, and scaling resistance, the alloy can withstand extended exposure to high temperatures and thermal cycling conditions.
| Specifications | : | ASTM A240 / ASME SA240 |
| Standard | : | ASTM, ASME and API |
| Thickness | : | 4.0mm – 100mm |
| Specialize | : | Shim Sheet, Perforated Sheet, B. Q. Profile. |
| Form | : | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) |
| Finish | : | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Hardness | : | Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc. |
| Grade | : | SS 309H, (UNS S30909) |
| Grade | Si | Cr | Ni | Mn | Si | C | P | S |
| SS 309H | 0.75 | 22.0-24.0 | 12.0-15.0 | 2.00 | 0.75 | 0.04-0.10 | 0.045 | 0.030 |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 309H | 515 | 205 | 40 | 95 | 217 |
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Due to excellent corrosion resistance, these sheets are manufactured at very high temperatures. Mechanical properties are improved by that manufacturing process. They are available with thicknesses in range of 3 mm up to 50 mm and width up to 2000 mm for structural and industrial applications.
The cold rolled plates were produced at room temperature with a polish finish. The plates come in various thicknesses from 0.5 mm to 6 mm and widths as much as 1500 mm making it very ideal for precision and aesthetic purposes.
These plates offer excellent corrosion resistance and a textured surface for improved grip and slip resistance. They are usually available in thicknesses from 3 mm to 10 mm and dimensions up to 2000 mm x 1000 mm, and are used in flooring and safety applications.
The perforated sheet has strong resistance to corrosion with various hole patterns for functional as well as for aesthetic purposes. Sizes are commonly between 0.5 and 6 mm in thickness, and up to 2000 mm x 1000 mm in dimensions to be used in filtration and ventilation.
These thin sheets give good corrosion resistance and are applied to spacing and levelling accurately. The availability is as thin as 0.1 mm, with up to 1000 mm width. These sheets are of crucial use for aligning machinery and construction work.
Polished plates offer excellent resistance to corrosion with a highly reflective finish through polishing. They have thicknesses in the range of 1-20 mm, and their dimensions could go up to 2000 mm x 1000 mm, commonly being used in decoration and architecture applications.
Vinit Stainless is a leading supplier and stockist of high-quality stainless steel 309H sheet and plates in Chennai, India. Our products are widely used in various applications, and we are committed to delivering excellent service, resulting in high customer satisfaction. Our unique finishing techniques further distinguish us in the stainless steel industry. We are dedicated to consistently providing superior products and effectively meeting our customer’s needs.
Because of its exceptional oxidation resistance and mechanical strength, stainless steel 309H sheets and plates are mostly utilized in corrosive and high-temperature settings. Boiler parts, kilns, heat exchangers, incinerators, flue-gas stacks, and furnace components are examples of common applications. 309H is frequently used for equipment like reactors and tanks in the chemical processing industry, particularly in situations where exposure to aggressive media is anticipated. It is also used in the petrochemical, power generation, and aerospace industries where materials need to retain their structural integrity in the face of intense heat. It is perfect for high-performance and critical systems due to its durability, corrosion resistance, and thermal stability.
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