Overview
C83600, often called 85-5-5-5 or SAE 40 bronze, is a cast copper alloy with tin, lead and zinc. It is pressure-tight, corrosion resistant and machines easily thanks to its lead content.
Machined from continuous-cast bar, it is a long-standing material for valves, pump parts and plumbing hardware.
Key Properties
Typical values from the MatWeb datasheet for Leaded Red Brass, UNS C83600, Copper Casting Alloy (Bronze SAE 40). Machined parts take the properties of the stock they are cut from.
| Property | Value |
|---|---|
| Density | 8.83 g/cm³ |
| Tensile strength | 255 MPa |
| Yield strength | 117 MPa |
| Elongation at break | 30 % |
| Hardness | HB 60 |
| Modulus of elasticity | 50.0 GPa @ 225 °C |
| Thermal conductivity | 72 W/m-K |
| Melting range | 855–1010 °C |
| Machinability | 84 % |
| Magnetic permeability | 1 |
Typical Applications
- Valve bodies and pump parts
- Bushings and bearings
- Plumbing hardware
- Marine fittings
Machining Notes
High machinability (about 84%). Contains lead — check potable-water regulations before specifying.
