Brass & Copper
Excellent electrical and thermal conductivity, plus free-machining brass for high-speed precision parts.
Copper and its alloys lead all common metals in electrical and thermal conductivity, making them essential for electrical, plumbing and heat-transfer parts. Brass adds excellent machinability and an attractive gold finish.
C360 free-machining brass is one of the fastest-cutting metals available, ideal for high-volume turned parts. C101 / C110 are high-purity coppers chosen for maximum conductivity in electrical components.
Material properties
| Density | ~8.5 g/cm³ (brass) |
|---|---|
| Electrical conductivity | Excellent (copper) |
| Thermal conductivity | Excellent |
| Corrosion resistance | Good |
| Machinability (C360) | Excellent (free-machining) |
| Machinability (copper) | Fair (gummy) |
| Relative cost | Medium |
Typical values for reference; exact properties depend on grade, temper and heat treatment. Full material certification is provided on every order.
Machinability
Free-machining brass (C360) cuts at very high speeds with superb finish and is ideal for screw-machine and CNC-turned parts. Pure copper is softer and gummier, requiring sharp tooling and care to avoid built-up edge.
Typical applications
Related engineering guides
Frequently asked questions
Why is C360 brass so easy to machine?
C360 contains lead that acts as a chip-breaker and lubricant, giving it the highest machinability rating of common metals — perfect for high-volume turned parts.
When should I choose copper over brass?
Choose pure copper (C101/C110) when maximum electrical or thermal conductivity is the priority; choose brass for easier machining and good strength where top conductivity is not essential.
Will brass and copper tarnish?
Both develop a natural patina over time. A clear lacquer or plating preserves the bright finish where appearance matters.