High-Leaded Brass Tube - CDA 332
High-Leaded Brass Tube (CDA 332) is a copper-zinc alloy with a higher lead content, enhancing its machinability. It is commonly used in applications requiring easy cutting, forming, and threading, while also offering good corrosion resistance. This alloy is typically used in industries like plumbing, electrical, and mechanical engineering.
Chemical Composition
Element |
Composition (%) |
Copper | 62.0 - 65.0 |
Lead | 1.5 - 2.5 |
Zinc | Rem. |
Iron | 0.35 max |
Physical Properties
Property |
Value |
Density |
0.308 lb/in³ at 68°F |
Specific Gravity |
8.53 |
Melting Point (Liquidus) |
1710°F |
Melting Point (Solidus) |
1650°F |
Electrical Conductivity |
26% IACS at 68°F |
Thermal Conductivity |
67 Btu/sq ft/ft hr/°F at 68°F |
Coefficient of Thermal Expansion (68-572°F) |
11.3 × 10⁻⁶ per °F |
Specific Heat Capacity |
0.09 Btu/lb/°F at 68°F |
Modulus of Elasticity in Tension |
15,000 ksi |
Modulus of Rigidity |
5,600 ksi |
Mechanical Properties
Property |
Value |
Tensile Strength | 65 ksi (typical) |
Yield Strength (0.5% Extension) | 50 ksi (typical) |
Elongation | 32% (typical) |
Modulus of Elasticity in Tension | 15,000 ksi |
Modulus of Rigidity | 5,600 ksi |
Rockwell B Hardness | 80 (typical for hard temper) |
Machinability Rating | 60 |
Thermal Properties
Property |
Value |
Melting Point (Liquidus) |
1710°F (932°C) |
Melting Point (Solidus) |
1650°F (899°C) |
Thermal Conductivity |
67 Btu/sq ft/ft hr/°F at 68°F (116 W/m·K at 20°C) |
Coefficient of Thermal Expansion (68-572°F) |
11.3 × 10⁻⁶ per °F (20.3 × 10⁻⁶ per °C) |
Specific Heat Capacity |
0.09 Btu/lb/°F at 68°F (377 J/kg·K at 20°C) |
Annealing Temperature Range |
800-1200°F (427-649°C) |
Fabrication Properties
Property |
Characteristic |
Cold Working |
Excellent |
Hot Forming |
Poor |
Machinability |
Very Good (Rating: 60) |
Soldering |
Excellent |
Brazing |
Good |
Oxyacetylene Welding |
Fair |
Gas Shielded Arc Welding |
Fair |
Coated Metal Arc Welding |
Not Recommended |
Spot Welding |
Fair |
Seam Welding |
Not Recommended |
Butt Welding |
Fair |
Forming and Bending |
Excellent |
Piercing and Punching |
Excellent |
Polishing |
Good |
Plating |
Good |
Common Applications
Common applications of High-Leaded Brass Tube (CDA 332) include:
- Valve stems and fittings
- Precision-machined components
- Plumbing fixtures
- Bearings and bushings
- Electrical connectors and terminals
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