Home > Sheet and Plates > Stainless Steel 440B Sheet and Plates
Walid Stainless, headquartered in Tunis, Tunisia, is a trusted manufacturer and supplier of stainless steel 440B sheets and plates for applications requiring high strength, hardness, and wear resistance. Produced using advanced manufacturing techniques and strict quality control, these sheets and plates offer consistent thickness, smooth surface finish, and reliable mechanical performance. Stainless steel 440B is a martensitic grade positioned between 440A and 440C, offering a balanced combination of hardness and corrosion resistance. Walid Stainless serves industries such as tooling, automotive, precision engineering, and industrial manufacturing with dependable materials and responsive service.
Stainless steel 440B is a high-carbon martensitic stainless steel containing chromium for corrosion resistance and strength. Its carbon content is higher than 440A but lower than 440C, allowing it to achieve high hardness through heat treatment while maintaining reasonable toughness. The material offers excellent wear resistance, good tensile strength, and reliable load-bearing capacity. While its corrosion resistance is moderate compared to austenitic grades, stainless steel 440B performs well in mildly corrosive environments and maintains dimensional stability under mechanical stress
| Specifications | ASTM A240 / ASME SA240, BS EN 10088-2, en 10028-7, IS 6911 |
|---|---|
| Plates Dimension Standard | MSRR, AMS, BS, JIS, AISI, ASTM, GB, DIN, EN, etc |
| Plates Thickness | 0.3 mm to 120 mm |
| Plates Width | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
| Plates Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc |
| Finish | 2B, 2D, BA NO (8), Cold rolled sheet (CR), Hot rolled plate (HR), SATIN (Met with Plastic Coated), No.1 finish hot rolled, 1D, 2B, No.4, BA, 8K, satin, hairline, brush, mirror etc. |
| Hardness | Half Hard, Soft, Hard, Quarter Hard, Spring Hard |
| Profiling | Plasma Plate Cutting, Laser Plate Cutting, Oxy-propane Flame Cutting |
| 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 |
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The excellent corrosion resistance provided by Stainless Steel 440B Hot Rolled Sheets ensures that it can be delivered in sizes between 3mm up to 150mm thickness, and in up to 2500mm width, for use where high strength and resistance to wear is required.
Cold-rolled stainless steel plates 440B have excellent corrosion resistance and a bright finish. These plates are available in a thickness range of 0.3mm to 6mm and widths up to 2000mm, which makes them ideal for precision applications that require tight tolerances.
Stainless Steel 440B Chequered Plates, with raised patterns for improved grip, are resistant to corrosion. The thicknesses available are 1.5mm to 10mm, and the widths go up to 1500mm, which is perfect for flooring and stair treads.
The perforated sheets are made from Stainless Steel 440B, providing corrosion resistance and ventilation. Generally available in a thickness range of 0.5mm to 3mm, and sheet sizes up to 2000mm x 4000mm, the perforated sheets are used for filtration, architectural, and decorative applications.
Stainless Steel 440B Shim Sheets are corrosion resistant and find applications in fine adjustment of machines and tools. The sheets have a thickness ranging from 0.05mm to 3mm and come in standard sizes such as 1000mm x 2000mm.
The 440B Polished Plates of Stainless Steel offer corrosion resistance along with an excellent aesthetic appeal, and are offered in a variety of thicknesses between 1mm and 50mm and widths up to 2000mm, especially for decorative and architectural applications.
At Walid Stainless, we give prime importance to quality along with great customer service backed up by rich documentation of the excellent Stainless Steel 440B Sheets and Plates that we deliver. We give essential documents that include the commercial invoice, the packing list, fumigation certificate, heat treatment chart, quality assurance plan, and a lab test report NABL approved. Such rich documentation of these premium quality products increases trust and confidence in the product from the most valued customers’ side. Besides, we provide Stainless Steel 440B Sheets and Plates with different test certificates, such as MTC as per EN 10204/3.1b, PMI Test Certificate, 100% radiography test report, and Third Party Inspection Certificate, as a reflection of our commitment to excellence and customer satisfaction.
Stainless steel 440B sheets and plates are commonly used in applications where durability, hardness, and wear resistance are critical. They are widely utilized in the manufacture of cutting tools, blades, bearings, and valve components. In industrial machinery and automotive applications, 440B is used for shafts, fasteners, and precision parts exposed to friction and stress. The material is also suitable for molds, dies, and mechanical components requiring heat treatment for enhanced performance. Its balanced properties make stainless steel 440B a reliable choice for demanding engineering and tooling applications.







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