Copper Alloy Properties

Overview

Engineering reference data for Copper Alloy Properties in material science and properties.

Key Formulas

Stress

$\sigma = \frac{F}{A}$

Force per unit area.

Strain

$\varepsilon = \frac{\Delta L}{L_0}$

Change in length per original length.

Hooke's Law

$\sigma = E \varepsilon$

Stress proportional to strain in elastic region.

Thermal Expansion

$\Delta L = \alpha L_0 \Delta T$

Length change due to temperature.

Variables

Symbol	Description	Unit
$\sigma$	Stress	Pa
$\varepsilon$	Strain	—
$E$	Young's modulus	Pa
$\alpha$	Thermal expansion coefficient	1/°C
$\Delta T$	Temperature change	°C

Mechanical Properties of Wrought and Cast Copper Alloys

The mechanical properties of copper vary significantly depending on the processing method. Annealed copper offers high ductility, while cold-worked copper provides greater strength at the expense of formability.

Key Observations

• Annealed copper exhibits the highest elongation (25–30%) and reduction of area (40–60%), making it ideal for forming operations.
• Cold worked copper significantly increases tensile strength (up to 400 MPa) but drastically reduces ductility and reduction of area.
• Cast copper generally has the lowest strength range but maintains reasonable elongation values.

References

• Original Source