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Walid Stainless, headquartered in Tunis, Tunisia, is a trusted manufacturer and supplier of premium SS 309H Sheets and Plates. Known for quality-focused production and dependable service, Walid Stainless provides stainless steel solutions designed for extreme operating conditions. SS 309H is a high-carbon, high-chromium and nickel stainless steel grade developed for elevated-temperature applications. These sheets and plates offer excellent oxidation resistance, strength, and durability at high temperatures. With strict adherence to international standards, Walid Stainless ensures products that deliver long service life, safety, and reliability for demanding industrial and thermal environments.
SS 309H Sheets and Plates contain approximately 22–24% chromium and 12–15% nickel, with higher carbon content to enhance high-temperature strength. This composition provides excellent resistance to oxidation and scaling at temperatures up to 1000°C. These products typically offer tensile strength in the range of 520–750 MPa and yield strength around 215–310 MPa. SS 309H exhibits good hardness, toughness, and structural stability, maintaining mechanical integrity under continuous heat exposure 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.
Walid Stainless is a leading supplier and stockist of high-quality stainless steel 309H sheet and plates in Tunis, Tunisia. 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.
SS 309H Sheets and Plates are widely used in high-temperature industrial applications such as furnaces, heat treatment equipment, boilers, and thermal processing units. They are commonly applied in heat exchangers, kiln liners, burner components, and exhaust systems. This grade is also suitable for petrochemical and power generation industries where resistance to oxidation and heat is critical. Fabricators rely on SS 309H for components exposed to extreme temperatures and corrosive gases. Its durability, heat resistance, and long service life make it a preferred material for severe thermal environments.
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