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Wiraphan Sheets and Plates, a reputable manufacturer and supplier based in Bangkok, Thailand, specializes in top-notch Stainless Steel 440B Sheets and Plates tailored for industrial, mechanical, and precision engineering needs. With state-of-the-art production facilities and a commitment to international quality standards, Wiraphan guarantees products that boast exceptional hardness, wear resistance, and strength. These Stainless Steel 440B Sheets and Plates are crafted for applications that demand toughness and moderate corrosion resistance, making them ideal for tooling, automotive, and industrial machinery components. Thanks to their consistent quality, prompt delivery, and cost-effective solutions, Wiraphan has become a trusted partner for clients both locally and around the globe.
Stainless Steel 440B Sheets and Plates are made from high-carbon martensitic stainless steel, primarily consisting of iron, 16–18% chromium, and about 0.60–0.75% carbon, along with trace amounts of manganese, silicon, and molybdenum. This unique composition results in outstanding hardness, tensile strength, and wear resistance. Mechanically, Stainless Steel 440B can be heat-treated to achieve impressive hardness while still offering moderate corrosion resistance. It also provides good toughness, fatigue resistance, and reasonable machinability, making it a great choice for precision components, tooling, and structural applications that face stress and wear.
| 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.
These Stainless Steel 440B Sheets and Plates find extensive use in industries that require high hardness, strength, and wear resistance. In tooling and manufacturing, they are utilized in cutting tools, knives, dies, and precision machinery components. In the automotive industry, they serve as shafts, gears, and other mechanical parts that endure wear. Industrially, these sheets and plates are perfect for bearings, valve components, and high-stress machinery parts. Their blend of durability, corrosion resistance, and mechanical performance ensures they provide long-lasting reliability in demanding industrial, mechanical, and engineering applications.
Stainless steel 440B sheets and plates are primarily used in applications requiring high durability and excellent corrosion resistance. It is commonly used in the manufacture of precision tools, knives, surgical instruments and bearings. Due to its high carbon content it provides exceptional corrosion resistance, making it suitable for heavy duty applications in automotive, aerospace and manufacturing Its ability to withstand oxidation and turbidity makes it ideal for medical devices, valve components and fittings for harsh environmental conditions
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