# UNS C60800 Aluminum Bronze

C60800 bronze is a bronze formulated for primary forming into wrought products. Cited properties are appropriate for the O61 (annealed) temper. C60800 is the UNS number for this material. Additionally, the common industry name is 5% Aluminum Bronze.

It has a fairly high melting temperature among wrought bronzes. In addition, it has a moderately high ductility and a fairly low tensile strength.

The graph bars on the material properties cards below compare C60800 bronze to: wrought bronzes (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* 16 *x 10 ^{6} psi*

Elongation at Break

55 *%*

Poisson's Ratio

0.34

Shear Modulus

46 *GPa* 6.7 *x 10 ^{6} psi*

Shear Strength

290 *MPa* 42 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

390 *MPa* 57 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

150 *MPa* 21 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

220 *J/g*

Maximum Temperature: Mechanical

210 *°C* 410 *°F*

Melting Completion (Liquidus)

1060 *°C* 1950 *°F*

Melting Onset (Solidus)

1050 *°C* 1920 *°F*

Specific Heat Capacity

410 *J/kg-K* 0.1 *BTU/lb-°F*

Thermal Conductivity

80 *W/m-K* 46 *BTU/h-ft-°F*

Thermal Expansion

18 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

17 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

18 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

29 *% relative*

Density

8.6 *g/cm ^{3}* 540

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

48 *MJ/kg* 20 *x 10 ^{3} BTU/lb*

Embodied Water

360 *L/kg* 43 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

170 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

94 *kJ/m ^{3}*

Stiffness to Weight: Axial

7.3 *points*

Stiffness to Weight: Bending

19 *points*

Strength to Weight: Axial

13 *points*

Strength to Weight: Bending

14 *points*

Thermal Diffusivity

23 *mm ^{2}/s*

Thermal Shock Resistance

14 *points*

## Alloy Composition

Among wrought copper alloys, the composition of C60800 bronze is notable for including arsenic (As) and aluminum (Al). Arsenic is used to protect the alloy against dezincification. Aluminum is used to add strength and oxidation resistance.

Cu | 92.5 to 95 | |

Al | 5.0 to 6.5 | |

As | 0.020 to 0.35 | |

Fe | 0 to 0.1 | |

Pb | 0 to 0.1 | |

res. | 0 to 0.5 |

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

## Followup Questions

## Similar Alloys

## Further Reading

ASTM B111: Standard Specification for Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock

ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015