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UNS C63200 Aluminum-Nickel Bronze

C63200 bronze is a bronze formulated for primary forming into wrought products. It has a moderately low electrical conductivity among wrought bronzes. In addition, it has a fairly low thermal conductivity and a moderately high heat capacity.

The properties of C63200 bronze include three 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 C63200 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

120 GPa 17 x 106 psi

Elongation at Break

17 to 18 %

Poisson's Ratio

0.34

Rockwell B Hardness

88

Shear Modulus

44 GPa 6.4 x 106 psi

Shear Strength

390 to 440 MPa 57 to 63 x 103 psi

Tensile Strength: Ultimate (UTS)

640 to 710 MPa 92 to 100 x 103 psi

Tensile Strength: Yield (Proof)

310 to 350 MPa 45 to 51 x 103 psi

Thermal Properties

Latent Heat of Fusion

230 J/g

Maximum Temperature: Mechanical

230 °C 450 °F

Melting Completion (Liquidus)

1060 °C 1940 °F

Melting Onset (Solidus)

1040 °C 1910 °F

Specific Heat Capacity

440 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

35 W/m-K 20 BTU/h-ft-°F

Thermal Expansion

18 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

7.0 % IACS

Electrical Conductivity: Equal Weight (Specific)

7.6 % IACS

Otherwise Unclassified Properties

Base Metal Price

29 % relative

Density

8.3 g/cm3 520 lb/ft3

Embodied Carbon

3.4 kg CO2/kg material

Embodied Energy

55 MJ/kg 24 x 103 BTU/lb

Embodied Water

380 L/kg 45 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

95 to 99 MJ/m3

Resilience: Unit (Modulus of Resilience)

400 to 510 kJ/m3

Stiffness to Weight: Axial

7.9 points

Stiffness to Weight: Bending

20 points

Strength to Weight: Axial

21 to 24 points

Strength to Weight: Bending

20 to 21 points

Thermal Diffusivity

9.6 mm2/s

Thermal Shock Resistance

22 to 24 points

Alloy Composition

Among wrought copper alloys, the composition of C63200 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) 78.8 to 82.6
Aluminum (Al) 8.7 to 9.5
Nickel (Ni) 4.0 to 4.8
Iron (Fe) 3.5 to 4.3
Manganese (Mn) 1.2 to 2.0
Silicon (Si) 0 to 0.1
Lead (Pb) 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

Further Reading

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

ASTM B124: Standard Specification for Copper and Copper Alloy Forging Rod, Bar, and Shapes

ASTM B283: Standard Specification for Copper and Copper-Alloy Die Forgings (Hot-Pressed)

Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001

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