C34500
High-Leaded Brass
Free-machining leaded brass for screw machine work. Takes threads and knurls cleanly at high production rates.
Tensile Strength
48–70 ksi
Yield Strength
18–52 ksi
Machinability
90 / 100
Density
0.306 lb/in³
Chemical Composition
| Element | Min % | Max % |
|---|---|---|
| Copper (Cu) | 62 | 65 |
| Zinc (Zn) | — | Remainder |
| Lead (Pb) | 1.5 | 2.5 |
| Iron (Fe) | — | 0.15 |
Physical Properties
| Density | 0.306 lb/cu in |
|---|---|
| Specific Gravity | 8.47 |
| Melting Point (Solidus) | 1630°F |
| Melting Point (Liquidus) | 1670°F |
| Electrical Conductivity | 26% IACS |
Mechanical Properties
| Tensile Strength | 48–70 ksi |
|---|---|
| Yield Strength | 18–52 ksi |
| Elongation | 10–52% |
| Hardness | 30–80 Rockwell B |
| Machinability Rating | 90 |
Thermal Properties
| Thermal Conductivity | 67 Btu/ft·hr·°F |
|---|---|
| Coefficient of Expansion | 11.3 × 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
- Screw machine products
- Gears and pinions
- Clock and watch parts
- Hardware components
- Fasteners
- Valve parts
Applicable Specifications
- ASTM B453
- SAE J461
- SAE J463
Frequently Asked Questions
Common questions about C34500 High-Leaded Brass specifications, applications, and material properties.