MakeItFrom.com
Menu (ESC)

UNS C62400 Aluminum Bronze

C62400 bronze is a bronze formulated for primary forming into wrought products. C62400 is the UNS number for this material. Additionally, the EN chemical designation is CuAl11Fe3.

It has a moderately high heat capacity among wrought bronzes. In addition, it has a moderately low base cost and a moderately high embodied energy.

The properties of C62400 bronze include seven common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare C62400 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

11 to 14 %

Poisson's Ratio

0.34

Shear Modulus

42 GPa 6.1 x 106 psi

Shear Strength

420 to 440 MPa 61 to 64 x 103 psi

Tensile Strength: Ultimate (UTS)

690 to 730 MPa 100 to 110 x 103 psi

Tensile Strength: Yield (Proof)

270 to 350 MPa 39 to 51 x 103 psi

Thermal Properties

Latent Heat of Fusion

230 J/g

Maximum Temperature: Mechanical

220 °C 430 °F

Melting Completion (Liquidus)

1040 °C 1900 °F

Melting Onset (Solidus)

1030 °C 1880 °F

Specific Heat Capacity

440 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

59 W/m-K 34 BTU/h-ft-°F

Thermal Expansion

18 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

12 % IACS

Electrical Conductivity: Equal Weight (Specific)

13 % IACS

Otherwise Unclassified Properties

Base Metal Price

27 % relative

Density

8.2 g/cm3 510 lb/ft3

Embodied Carbon

3.2 kg CO2/kg material

Embodied Energy

53 MJ/kg 23 x 103 BTU/lb

Embodied Water

400 L/kg 47 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

68 to 77 MJ/m3

Resilience: Unit (Modulus of Resilience)

320 to 550 kJ/m3

Stiffness to Weight: Axial

7.6 points

Stiffness to Weight: Bending

20 points

Strength to Weight: Axial

23 to 25 points

Strength to Weight: Bending

21 to 22 points

Thermal Diffusivity

16 mm2/s

Thermal Shock Resistance

25 to 26 points

Alloy Composition

Among wrought copper alloys, the composition of C62400 bronze is notable for including aluminum (Al) and silicon (Si). Aluminum is used to add strength and oxidation resistance. Silicon is used to increase strength at the expense of ductility. It also lowers the melting temperature and raises the fluidity of the alloy.

Copper (Cu) 82.8 to 88
Aluminum (Al) 10 to 11.5
Iron (Fe) 2.0 to 4.5
Manganese (Mn) 0 to 0.3
Silicon (Si) 0 to 0.25
Tin (Sn) 0 to 0.2
Residuals 0 to 0.5

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

Followup Questions

Similar Alloys

Further Reading

ASTM B150: Standard Specification for Aluminum Bronze Rod, Bar, and Shapes

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