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Boikanyo Sheets and Plates, located in Cape Town, South Africa, has built a solid reputation as a manufacturer and supplier of stainless steel 440B sheets and plates. These products are celebrated for their remarkable hardness, strength, and wear resistance. The company specializes in crafting top-quality sheets and plates that excel in applications demanding outstanding mechanical performance and moderate corrosion resistance. By employing advanced heat treatment and precision manufacturing techniques, Boikanyo guarantees that its 440B stainless steel offerings provide exceptional durability, precise dimensions, and a smooth surface finish, catering to a variety of industries including engineering, tooling, and fabrication.
The stainless steel 440B sheets and plates are primarily made of iron, featuring 16–18% chromium, 0.75% molybdenum, and 0.9–1.2% carbon, which all contribute to their impressive hardness and resistance to corrosion. These plates boast a tensile strength ranging from about 760 to 1000 MPa and a yield strength of around 450 MPa. After undergoing hardening and tempering processes, they achieve remarkable edge retention and resistance to abrasion. Additionally, 440B stainless steel offers good protection against mild acids and alkalis, maintaining stability even in high-stress and high-temperature situations.
| Specifications | ASTM A240 / ASME SA240 |
|---|---|
| Width | 1000mm / 1219mm /1250mm / 1500mm / 2000mm |
| Length | 2000 mm / 2440 mm / 2500 mm / 3000 mm / 6000 mm |
| Thickness | 0.1mm to 12 mm Thk |
| Hardness | Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc. |
| Finish | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Form | Coils, Foils, Rolls, Plain Sheet, Strip, Flats, Blank (Circle), Ring (Flange) etc. |
| Grade | C | Mn | Si | P | S | Cr | Ni |
|---|---|---|---|---|---|---|---|
| 440B | 0.6 -0.75 | 1.00 max | 1.00 max | 0.04 max | 0.030 max | 16.00 -18.00 | – |
| Tempering Temperature (°C) | Tensile Strengtd (MPa) | Yield Strengtd 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Rockwell (HR C) | Impact Charpy V (J) |
|---|---|---|---|---|---|
| Annealed* | 758 | 448 | 14 | 269HB max | – |
| 204 | 2030 | 1900 | 4 | 59 | 9 |
| 260 | 1960 | 1830 | 4 | 57 | 9 |
| 316 | 1860 | 1740 | 4 | 56 | 9 |
| 371 | 1790 | 1660 | 4 | 56 | 9 |
| Grade | DIN | UNS | EN |
| 440B | 1.4112 | S44003 | X90CrMoV18 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Stainless Steel 440B Sheet and Plates has exceptional hardness, strength and wear resistance, making it ideal for heavy-duty applications Its high chromium content (16-18%) ensures excellent corrosion and oxidation resistance even in harsh environments. The alloy retains good strength at high temperatures and provides good abrasion resistance, making it suitable for use in tool making, valves and machine parts Stainless steel 440B is also highly versatile, for easy machining and polishing, go with profitability in automotive, aerospace and construction Increases.
You’ll find stainless steel 440B sheets and plates commonly used in the production of blades, cutting tools, valve components, bearings, pump parts, and molds. Their outstanding hardness and toughness make them perfect for high-wear industrial applications. In the mechanical and automotive sectors, they’re utilized for gears, shafts, and precision-engineered components that demand strength and durability. Plus, thanks to their moderate corrosion resistance and excellent polishability, they’re also favored in decorative, medical, and kitchen equipment applications where both performance and aesthetics are key.
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