C330 copper, also known as leaded copper, is a highly machinable alloy. A small amount of lead is added to improve its machinability and surface finish. This alloy combines excellent electrical conductivity with good machinability, making it ideal for manufacturing parts requiring precision machining and high production volumes. C330 copper is commonly used in CNC machining to produce high-precision parts.
Chemical, Physical, and Mechanical Properties of Copper C330 (Leaded Copper)
Chemical Composition (Typical)
|
Element |
Composition Range (wt.%) |
Key Role |
|---|---|---|
|
Copper (Cu) |
97.5% |
Provides excellent electrical and thermal conductivity |
|
Lead (Pb) |
1.5–2.5% |
Improves machinability and surface finish |
|
Other Elements |
≤0.5% |
Residual elements with minimal impact on properties |
Physical Properties
|
Property |
Value (Typical) |
Test Standard/Condition |
|---|---|---|
|
Density |
8.92 g/cm³ |
ASTM B311 |
|
Melting Point |
1,083°C |
ASTM E29 |
|
Thermal Conductivity |
220 W/m·K at 20°C |
ASTM E1952 |
|
Electrical Conductivity |
50% IACS at 20°C |
ASTM B193 |
|
Coefficient of Expansion |
17.5 µm/m·°C |
ASTM E228 |
|
Specific Heat Capacity |
380 J/kg·K |
ASTM E1269 |
|
Elastic Modulus |
110 GPa |
ASTM E111 |
Mechanical Properties (Annealed Temper)
|
Property |
Value (Typical) |
Test Standard |
|---|---|---|
|
Tensile Strength |
240–380 MPa |
ASTM E8/E8M |
|
Yield Strength (0.2%) |
210–350 MPa |
ASTM E8/E8M |
|
Elongation |
20–30% |
ASTM E8/E8M |
|
Hardness |
60–80 HB |
ASTM E10 |
|
Fatigue Strength |
~150 MPa |
ASTM E466 |
|
Impact Resistance |
Good |
ASTM E23 |
Key Characteristics of Copper C330 (Leaded Copper)
Excellent Machinability
Copper C330 is specifically designed for easy machining, allowing for high-speed operations with a smooth surface finish, making it suitable for mass production.
Moderate Electrical Conductivity
With 50% IACS conductivity, Copper C330 is suitable for electrical applications requiring moderate conductivity and high machinability.
Increased Strength and Durability
The alloy provides a balance of strength and durability, making it suitable for mechanical parts and connectors in industrial environments.
Good Corrosion Resistance
Copper C330 resists corrosion in most industrial environments, making it ideal for use in parts exposed to moisture and mild acids.
Cost-Effective for High-Volume Production
The ease of machining and durability make Copper C330 an economical choice for large-scale electrical connectors, fittings, and mechanical parts manufacturing.
Industry Applications of Copper C330 (Leaded Copper)
Aerospace Industry: Ideal for producing electrical connectors, pins, and other components subject to high-volume machining.
Electrical & Power: Used for terminals, busbars, and other power distribution components requiring easy fabrication.
Automotive Industry: Suitable for high-volume connectors and electrical components manufacturing in automotive systems.
About us
Founded in 2008, our company specializes in the international trade of high-quality copper products. We are dedicated to providing a comprehensive range of copper-based solutions to a global clientele.
Our core product portfolio encompasses a diverse spectrum of copper and copper alloy forms, including:
Copper Tubes & Pipes: Precision-engineered for applications in HVACR, plumbing, and industrial systems.
Copper Sheets & Plates: Available in various grades and thicknesses for roofing, fabrication, and architectural uses.
Copper Bars & Rods: Supplied as solid profiles, hexagons, or squares for machining, electrical components, and manufacturing.
Copper Wires & Strands: From fine enamelled wires to large conductive cables for electrical and winding applications.
Copper Foils & Strips: Thin-rolled products essential for electronics, transformers, RF shielding, and flexible circuits.
We also offer related products such as Copper Coils, Copper Profiles, Copper Blanks, Copper Busbars, Copper Fittings, Copper Alloys (including brass and bronze), Copper Anodes, and Copper Cathodes.
Email:sales@gneesteel.com
