Home > Sheet and Plates > Stainless Steel 309H Sheet and Plates
Nestled in the heart of Kinshasa, Mbemba Stainless stands as a trusted partner for industrial and construction needs across the Congo. We take pride in being your local source for high-performance materials, specializing in the supply of Stainless Steel 309H sheet and plates. Our commitment is to provide not just a product, but a reliable solution, ensuring you have access to top-tier materials that meet the demanding challenges of modern projects, backed by our expertise and dedication to quality.
The strength of Stainless Steel 309H lies in its sophisticated composition, which includes higher levels of chromium and nickel for exceptional resistance to oxidation. This is further enhanced by its controlled carbon content, giving it superior strength at high temperatures. This combination results in a material that doesn’t easily weaken or degrade when the heat is on, maintaining its structural integrity in environments where other steels would fail, making it a truly resilient choice.
| 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.
Mbemba Stainless is a leading supplier and stockist of high-quality stainless steel 309H sheet and plates in Kinshasa, Congo. 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.
This exceptional durability makes Stainless Steel 309H sheet and plates ideal for some of the most demanding jobs. You’ll often find it forming the core components of high-temperature industrial furnaces, heat treating equipment, and critical parts within the power generation sector. It’s also the preferred material for various furnace parts, like baffles and combustion chambers, where its ability to withstand repeated thermal cycling ensures long-lasting performance and reliability, keeping operations running smoothly.







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