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 106 psi
Elongation at Break
55 %
Poisson's Ratio
0.34
Shear Modulus
46 GPa 6.7 x 106 psi
Shear Strength
290 MPa 42 x 103 psi
Tensile Strength: Ultimate (UTS)
390 MPa 57 x 103 psi
Tensile Strength: Yield (Proof)
150 MPa 21 x 103 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/cm3 540 lb/ft3
Embodied Carbon
2.9 kg CO2/kg material
Embodied Energy
48 MJ/kg 20 x 103 BTU/lb
Embodied Water
360 L/kg 43 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
170 MJ/m3
Resilience: Unit (Modulus of Resilience)
94 kJ/m3
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 mm2/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