C48500
Naval Brass (High Lead)
Best machinability of naval brasses. Combines seawater corrosion resistance with excellent machining characteristics.
Tensile Strength
55–75 ksi
Yield Strength
25–53 ksi
Machinability
70 / 100
Density
0.305 lb/in³
Chemical Composition
| Element | Min % | Max % |
|---|---|---|
| Copper (Cu) | 59 | 62 |
| Tin (Sn) | 0.5 | 1 |
| Lead (Pb) | 1.3 | 2.2 |
| Zinc (Zn) | — | Remainder |
| Iron (Fe) | — | 0.1 |
Physical Properties
| Density | 0.305 lb/cu in |
|---|---|
| Specific Gravity | 8.44 |
| Melting Point (Solidus) | 1620°F |
| Melting Point (Liquidus) | 1640°F |
| Electrical Conductivity | 26% IACS |
Mechanical Properties
| Tensile Strength | 55–75 ksi |
|---|---|
| Yield Strength | 25–53 ksi |
| Elongation | 15–40% |
| Hardness | 35–70 Rockwell B |
| Machinability Rating | 70 |
Thermal Properties
| Thermal Conductivity | 67 Btu/ft·hr·°F |
|---|---|
| Coefficient of Expansion | 11.8 × 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
- Marine hardware
- Screw machine products
- Valve stems
- Bolts and nuts
- Fittings for marine use
- Decorative marine trim
Applicable Specifications
- ASTM B21
- ASTM B124
- SAE J461
- SAE J463