# UNS C15900 Dispersion Strengthened Copper

C15900 copper is a lightly alloyed grade of copper, formulated for primary forming into wrought products. Cited properties are appropriate for the M30 (as hot extruded) condition.

It has a fairly high tensile strength among wrought coppers. In addition, it has a moderately high embodied energy and a moderately low electrical conductivity.

The graph bars on the material properties cards below compare C15900 copper to: wrought 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

Elastic (Young's, Tensile) Modulus

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

Elongation at Break

6.5 *%*

Poisson's Ratio

0.34

Rockwell B Hardness

95

Shear Modulus

43 *GPa* 6.2 *x 10 ^{6} psi*

Shear Strength

420 *MPa* 61 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

720 *MPa* 100 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

240 *MPa* 35 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

210 *J/g*

Maximum Temperature: Mechanical

200 *°C* 390 *°F*

Melting Completion (Liquidus)

1080 *°C* 1980 *°F*

Melting Onset (Solidus)

1030 *°C* 1880 *°F*

Specific Heat Capacity

390 *J/kg-K* 0.094 *BTU/lb-°F*

Thermal Conductivity

280 *W/m-K* 160 *BTU/h-ft-°F*

Thermal Expansion

17 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

48 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

49 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

30 *% relative*

Density

8.8 *g/cm ^{3}* 550

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

45 *MJ/kg* 19 *x 10 ^{3} BTU/lb*

Embodied Water

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

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

37 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

260 *kJ/m ^{3}*

Stiffness to Weight: Axial

7.2 *points*

Stiffness to Weight: Bending

18 *points*

Strength to Weight: Axial

23 *points*

Strength to Weight: Bending

20 *points*

Thermal Diffusivity

80 *mm ^{2}/s*

Thermal Shock Resistance

26 *points*

## Alloy Composition

Among wrought copper alloys, the composition of C15900 copper is notable for including aluminum (Al). Aluminum is used to add strength and oxidation resistance.

Cu | 97.5 to 97.9 | |

Al | 0.76 to 0.84 | |

Ti | 0.66 to 0.74 | |

O | 0.4 to 0.54 | |

C | 0.27 to 0.33 | |

Fe | 0 to 0.040 |

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