309H polished plates feature a refined finish and high-temperature strength, ideal for aesthetic applications in architecture, food processing, and heat-resistant industrial component
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Rishabh Steel is a prominent manufacturer and supplier of high-grade Stainless Steel 309H Sheets and Plates, headquartered in Mumbai, India. Renowned for our superior product quality and technical expertise, we offer SS 309H Sheets and Plates that meet international standards such as ASTM and ASME. These products are specifically engineered for high-temperature applications and harsh environments. With a focus on precision, durability, and customer satisfaction, Rishabh Steel delivers custom sizes, competitive prices, and timely delivery to serve the needs of industries worldwide.
Stainless Steel 309H Sheets and Plates are composed of high chromium (22–24%) and nickel (12–15%) content with increased carbon (0.04–0.10%) compared to 309S, providing superior high-temperature strength. These sheets and plates offer excellent oxidation resistance and mechanical properties, with a tensile strength of about 620 MPa and a yield strength of 310 MPa. The higher carbon content improves creep resistance and structural stability at elevated temperatures, making SS 309H ideal for high-heat applications without compromising strength or formability.
| 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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309H hot rolled sheets offer high-temperature strength and corrosion resistance, ideal for furnace parts, heat treatment equipment, and industrial fabrication under extreme thermal conditions.
309H cold rolled plates provide a smooth finish, tight tolerances, and excellent high-temperature resistance, suitable for precision fabrication in chemical, power, and thermal industries.
309H chequered plates feature a textured surface for slip resistance, combining durability and heat resistance, ideal for flooring in industrial, power, and high-temperature environments.
309H perforated sheets offer strength, ventilation, and corrosion resistance, perfect for filtration, screens, decorative panels, and high-temperature industrial applications.
309H shim sheets deliver precision thickness and heat resistance, used for alignment, spacing, and sealing in high-temperature and corrosive industrial environments.
309H polished plates feature a refined finish and high-temperature strength, ideal for aesthetic applications in architecture, food processing, and heat-resistant industrial component
Stainless Steel 309H Sheets and Plates are widely used in applications involving extreme heat and corrosion. They are ideal for furnace components, heat exchangers, kilns, boilers, and incinerators. In the petrochemical and power generation sectors, they are employed for pressure vessels, high-temperature piping, and structural supports exposed to intense heat. SS 309H is also used in refinery equipment, thermal processing units, and parts of combustion chambers. Its strength, heat resistance, and weldability make it a preferred choice for industries requiring dependable performance under demanding thermal conditions.
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