Stainless Steel 440C Plates
4.5mm - 200mm
Stainless Steel 440C Plates, available in thicknesses ranging from 4.5mm to 200mm, are known for their high hardness, exceptional strength, and excellent wear resistance. With a chemical composition that includes 16-18% chromium and 0.95-1.20% carbon, 440C is one of the hardest stainless steels, achieving a Rockwell hardness of 56-58 HRC after heat treatment. It is widely used in demanding applications such as bearings, valve components, medical instruments, cutting tools, and dies, where high performance and durability are required. While 440C offers good corrosion resistance in moderately aggressive environments, its magnetic properties and ability to withstand high temperatures make it ideal for industrial uses, especially in the aerospace, automotive, and tooling industries. The material's strength and toughness ensure reliable performance in both harsh and precision environments.
Stainless Steel 440C Plates available in diameters ranging from 4.5mm - 200mm .
specifications
| Specification Parameter | Details |
|---|---|
| Material Grade | Stainless Steel 440C |
| Thickness Range | 4.5mm - 200mm |
| Standard | ASTM A276, ASTM A479, ASTM A240 |
| Chemical Composition | Fe: Bal, Cr: 16-18%, C: 0.95-1.20%, Mn: 1.00%, Si: 1.00%, P: 0.04%, S: 0.03% |
| Tensile Strength | 1,250 MPa (181 ksi) |
| Yield Strength | 1,100 MPa (160 ksi) |
| Elongation | 10% (min) |
| Density | 7.75 g/cm³ |
| Modulus of Elasticity | 200,000 MPa (29 × 10⁶ psi) |
| Hardness (Rockwell C) | 56-58 HRC |
| Thermal Conductivity | 17.4 W/m·K |
| Melting Point | 1,450°C (2,642°F) |
| Corrosion Resistance | Good resistance to corrosion in moderately aggressive environments |
| Magnetic Properties | Magnetic (due to high carbon content) |
| Applications | Bearings, valve components, medical instruments, cutting tools, dies, and molds |
| Surface Finish | Mill finish, polished, or custom finishes available |
| Length Options | Custom lengths, typically up to 6 meters |
| Form | Plates, flat stock |
| Packaging | Standard packaging with protective wrapping |
Applications
Stainless Steel 440C Plates are widely recognized for their high hardness, strength, and wear resistance, making them ideal for demanding applications. Common uses include bearings, valve components, cutting tools, dies, and medical instruments. The high carbon content in 440C provides excellent hardness after heat treatment, while its moderate corrosion resistance makes it suitable for environments that are not overly aggressive. The material is often found in industries such as aerospace, automotive, medical, and tooling, where both strength and durability are critical.