# Extra-Spring and Stress Relieved (HR10) C19000 Copper

HR10 C19000 copper is C19000 copper in the HR10 (extra-spring and stress relieved) temper. It has the second highest strength and lowest ductility compared to the other variants of C19000 copper. The graph bars on the material properties cards below compare HR10 C19000 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

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

Elongation at Break

2.5 *%*

Poisson's Ratio

0.34

Rockwell B Hardness

94

Shear Modulus

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

Shear Strength

380 *MPa* 55 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

740 *MPa* 110 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

630 *MPa* 91 *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)

1040 *°C* 1900 *°F*

Specific Heat Capacity

390 *J/kg-K* 0.092 *BTU/lb-°F*

Thermal Conductivity

250 *W/m-K* 150 *BTU/h-ft-°F*

Thermal Expansion

17 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

60 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

61 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

31 *% relative*

Density

8.9 *g/cm ^{3}* 560

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

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

Embodied Water

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

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

18 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

1690 *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

73 *mm ^{2}/s*

Thermal Shock Resistance

26 *points*

## Alloy Composition

Cu | 96.9 to 99 | |

Ni | 0.9 to 1.3 | |

Zn | 0 to 0.8 | |

P | 0.15 to 0.35 | |

Fe | 0 to 0.1 | |

Pb | 0 to 0.050 | |

res. | 0 to 0.5 |

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