MakeItFrom.com
Menu (ESC)

UNS C61800 (CW305G) Aluminum Bronze

C61800 bronze is a bronze formulated for primary forming into wrought products. Cited properties are appropriate for the H02 (half hard) temper. CW305G is the EN numeric designation for this material. C61800 is the UNS number. Additionally, the EN chemical designation is CuAl10Fe1. And the British Standard (BS) designation is CA103.

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

The graph bars on the material properties cards below compare C61800 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

26 %

Fatigue Strength

190 MPa 27 x 103 psi

Poisson's Ratio

0.34

Rockwell B Hardness

89

Shear Modulus

44 GPa 6.4 x 106 psi

Shear Strength

310 MPa 45 x 103 psi

Tensile Strength: Ultimate (UTS)

740 MPa 110 x 103 psi

Tensile Strength: Yield (Proof)

310 MPa 45 x 103 psi

Thermal Properties

Latent Heat of Fusion

230 J/g

Maximum Temperature: Mechanical

220 °C 430 °F

Melting Completion (Liquidus)

1050 °C 1910 °F

Melting Onset (Solidus)

1040 °C 1900 °F

Specific Heat Capacity

440 J/kg-K 0.1 BTU/lb-°F

Thermal Conductivity

64 W/m-K 37 BTU/h-ft-°F

Thermal Expansion

18 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

13 % IACS

Electrical Conductivity: Equal Weight (Specific)

14 % IACS

Otherwise Unclassified Properties

Base Metal Price

28 % relative

Density

8.3 g/cm3 520 lb/ft3

Embodied Carbon

3.1 kg CO2/kg material

Embodied Energy

52 MJ/kg 22 x 103 BTU/lb

Embodied Water

390 L/kg 47 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

150 MJ/m3

Resilience: Unit (Modulus of Resilience)

420 kJ/m3

Stiffness to Weight: Axial

7.5 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

25 points

Strength to Weight: Bending

22 points

Thermal Diffusivity

18 mm2/s

Thermal Shock Resistance

26 points

Alloy Composition

Among wrought copper alloys, the composition of C61800 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) 86.9 to 91
Aluminum (Al) 8.5 to 11
Iron (Fe) 0.5 to 1.5
Silicon (Si) 0 to 0.1
Lead (Pb) 0 to 0.020
Zinc (Zn) 0 to 0.020
Residuals 0 to 0.5

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

Followup Questions

Similar Alloys