C36000
Free-Cutting Brass
The industry standard for machinability with a rating of 100. Excellent chip breakage and surface finish in high-speed automatic screw machine operations.
Tensile Strength
49–68 ksi
Yield Strength
18–52 ksi
Machinability
100 / 100
Density
0.307 lb/in³
Chemical Composition
| Element | Min % | Max % |
|---|---|---|
| Copper (Cu) | 60.0 | 63.0 |
| Lead (Pb) | 2.5 | 3.0 |
| Zinc (Zn) | — | Remainder |
| Iron (Fe) | — | 0.35 |
Cu + Sum of Named Elements 99.5% min.
Physical Properties
| Density | 0.307 lb/cu in |
|---|---|
| Specific Gravity | 8.5 |
| Melting Point (Solidus) | 1630°F |
| Melting Point (Liquidus) | 1650°F |
| Electrical Conductivity | 26% IACS |
Mechanical Properties
| Tensile Strength | 49–68 ksi |
|---|---|
| Yield Strength | 18–52 ksi |
| Elongation | 7–53% |
| Hardness | 55–78 Rockwell B |
| Machinability Rating | 100 |
Thermal Properties
| Thermal Conductivity | 67 Btu/ft·hr·°F |
|---|---|
| Coefficient of Expansion | 11.4 × 10⁻⁶ /°F |
| Specific Heat | 0.09 Btu/lb·°F |
Fabrication Properties
Soldering
Brazing
Oxyacetylene Welding
Gas Shielded Arc
Coated Metal Arc
Cold Working
Hot Forming
Typical Applications
- Automatic screw machine products
- Valve stems and seats
- Gears and pinions
- Plumbing fittings and faucet components
- Fluid connectors and pneumatic fittings
- Hardware and lock bodies
- Fasteners (nuts, bolts, screws)
- Gauges and nozzles
Applicable Specifications
- ASTM B16/B16M
- SAE J461
- SAE J463
- AMS 4610