C85200 is a high-performance leaded brass sheet renowned for its unparalleled machinability. The lead element, intentionally added to its chemical composition, acts as a lubricant and chipbreaker during cutting, significantly reducing tool wear and producing a smooth machined surface. This significantly improves production efficiency and reduces manufacturing costs.
Furthermore, while maintaining excellent machinability, this material is reinforced with elements such as iron and tin, resulting in higher strength, hardness, and excellent wear resistance than ordinary brass. Furthermore, it inherits the excellent corrosion resistance of the brass base, offering excellent resistance to atmospheric and seawater erosion. Therefore, it is often used in the manufacture of complex parts requiring precision machining and durable wear resistance, such as gears, valves, bearings, and high-end hardware.
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 45 | 45 |
| Tensile strength | 260 MPa | 37700 psi |
| Yield strength (@strain 0.500%) | 90.0 MPa | 13100 psi |
| Elongation at break (In 50 mm) | 35.00% | 35.00% |
| Machinability (UNS C36000 (free-cutting brass) = 100) | 80 | 80 |
| Poisson’s ratio | 0.34 | 0.34 |
| Elastic modulus | 117 GPa | 16969 ksi |
