# EN CC140C (CuCr1-C) Chromium Copper

CC140C copper is a lightly alloyed grade of copper, formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. CC140C is the EN numeric designation for this material. CuCr1-C is the EN chemical designation.

It has a very low ductility among cast coppers. In addition, it has a moderately low electrical conductivity and a moderately low thermal conductivity.

The graph bars on the material properties cards below compare CC140C copper to: cast coppers (top), all copper alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

## Mechanical Properties

Brinell Hardness

110

Elastic (Young's, Tensile) Modulus

120 *GPa* 17 *x 10 ^{6} psi*

Elongation at Break

11 *%*

Poisson's Ratio

0.34

Shear Modulus

44 *GPa* 6.3 *x 10 ^{6} psi*

Tensile Strength: Ultimate (UTS)

340 *MPa* 49 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

230 *MPa* 33 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

210 *J/g*

Maximum Temperature: Mechanical

200 *°C* 390 *°F*

Melting Completion (Liquidus)

1100 *°C* 2000 *°F*

Melting Onset (Solidus)

1040 *°C* 1910 *°F*

Specific Heat Capacity

390 *J/kg-K* 0.092 *BTU/lb-°F*

Thermal Conductivity

310 *W/m-K* 180 *BTU/h-ft-°F*

Thermal Expansion

17 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

77 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

78 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

31 *% relative*

Density

8.9 *g/cm ^{3}* 560

*lb/ft*

^{3}Embodied Carbon

2.6 *kg CO _{2}/kg material*

Embodied Energy

41 *MJ/kg* 18 *x 10 ^{3} BTU/lb*

Embodied Water

310 *L/kg* 37 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

34 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

220 *kJ/m ^{3}*

Stiffness to Weight: Axial

7.3 *points*

Stiffness to Weight: Bending

18 *points*

Strength to Weight: Axial

10 *points*

Strength to Weight: Bending

12 *points*

Thermal Diffusivity

89 *mm ^{2}/s*

Thermal Shock Resistance

12 *points*

## Alloy Composition

Among cast copper alloys, the composition of CC140C copper is notable for including chromium (Cr). Chromium additions permits certain types of heat treatment to improve mechanical strength.

Cu | 98.8 to 99.6 | |

Cr | 0.4 to 1.2 |

All values are % weight. Ranges represent what is permitted under applicable standards.

## Followup Questions

## Similar Alloys

## Further Reading

EN 1982: Copper and copper alloys - Ingots and castings