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Nial Sheets and Plates is a reputable manufacturer and supplier of high-performance Stainless Steel 440C Sheets and Plates based in Houston, USA. We cater to industries that require exceptional hardness, wear resistance, and dimensional stability. Our precision-crafted Stainless Steel 440C Sheets and Plates are specifically designed for applications where superior strength and a top-notch finish are crucial. With a strong focus on quality assurance, advanced processing techniques, and dependable delivery, we serve clients in aerospace, tooling, automotive, and industrial sectors who need durable Stainless Steel 440C Sheets and Plates for high-precision, high-strength components.
Stainless Steel 440C Sheets and Plates are high-carbon martensitic stainless steels containing approximately 16–18% chromium and 0.95–1.20% carbon, along with trace amounts of manganese and silicon for added stability. This alloy offers remarkable hardness and wear resistance after heat treatment, boasting a tensile strength of around 760–830 MPa and a yield strength close to 450 MPa. It can achieve a Rockwell hardness of up to 58 HRC. While it’s tough, it still maintains moderate corrosion resistance, making it suitable for parts that face friction and mild corrosive environments.
| 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 | Mo | Ni | N | |
| 440C | min. max. | 0.95 1.20 | – 1 | – 1 | – 0.04 | – 0.030 | 16.00 18.00 | – 0.75 | – | – |
| Tempering Temperature (°C) | Tensile Strength (MPa) | Yield Strength 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 | WERKSTOFF NR. | UNS |
| SS 440C | 1.4125 | S44004 |
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (mm/m/°C) | Thermal Conductivity(W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nW.m) | |||
| 0-100°C | 0-200°C | 0-600°C | at 100°C | at 500°C | |||||
| 440 C | 7650 | 200 | 10.1 | 10.3 | 11.7 | 24.2 | – | 460 | 600 |
| Thickness | Plate Weight per Unit Area | Density |
|---|---|---|
| 3/16 inches | 0.06000 lbs/in²42.184176 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1/4 inches | 0.08 lbs/in²56.245568 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3/8 inches | 0.121 lbs/in²85.0714216 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1/2 inches | 0.161 lbs/in²113.1942056 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 5/8 inches | 0.196 lbs/in²137.8016416 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3/4 inches | 0.235 lbs/in²165.221356 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 7/8 inches | 0.274 lbs/in²192.6410704 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 inches | 0.313 lbs/in²220.0607848 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 1/4 inches | 0.391 lbs/in²274.9002136 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 1/2 inches | 0.47 lbs/in²330.442712 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 3/4 inches | 0.549 lbs/in²385.9852104 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 inches | 0.627 lbs/in²440.8246392 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 1/4 inches | 0.705 lbs/in²495.664068 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 1/2 inches | 0.784 lbs/in²551.2065664 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 3/4 inches | 0.862 lbs/in²606.0459952 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3 inches | 0.941 lbs/in²661.5884936 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
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 440C Sheet and Plates offers many advantages in paper and plate form. It is known for its high durability, which makes it ideal for applications that require damage resistance such as nails, bearings and valves. It has excellent corrosion resistance, especially in water and chemical environments. 440C also provides excellent strength and stability, maintaining its mechanical properties even at elevated temperatures. Furthermore, it is easily machined and manufactured, making it a standard method for precision manufacturing in industries including automotive, aerospace and medical.
These Stainless Steel 440C Sheets and Plates are extensively utilized in industries where high hardness, wear resistance, and a fine surface finish are vital. They’re perfect for crafting precision bearings, ball bearings, valve components, and pump parts in the aerospace and automotive fields. Tooling industries favor them for cutting tools, dies, and premium knife blades that need a sharp, long-lasting edge. Additionally, they’re selected for surgical instruments, measuring devices, and components that operate under high friction. Their excellent polishability and ability to retain shape make them a reliable choice for precision parts that demand consistent performance.
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Houston, TX 77041
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