UNS C62500 Aluminum-Iron Bronze
C62500 bronze is a bronze formulated for primary forming into wrought products. Cited properties are appropriate for the M30 (as hot extruded) condition. It has the lowest ductility among wrought bronzes. In addition, it has the highest heat capacity and a fairly high melting temperature.
The graph bars on the material properties cards below compare C62500 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
1.0 %
Fatigue Strength
460 MPa 67 x 103 psi
Poisson's Ratio
0.34
Rockwell B Hardness
29
Shear Modulus
42 GPa 6.2 x 106 psi
Shear Strength
410 MPa 60 x 103 psi
Tensile Strength: Ultimate (UTS)
690 MPa 100 x 103 psi
Tensile Strength: Yield (Proof)
410 MPa 60 x 103 psi
Thermal Properties
Latent Heat of Fusion
230 J/g
Maximum Temperature: Mechanical
230 °C 450 °F
Melting Completion (Liquidus)
1050 °C 1930 °F
Melting Onset (Solidus)
1050 °C 1920 °F
Specific Heat Capacity
460 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
47 W/m-K 27 BTU/h-ft-°F
Thermal Expansion
18 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
10 % IACS
Electrical Conductivity: Equal Weight (Specific)
11 % IACS
Otherwise Unclassified Properties
Base Metal Price
26 % relative
Density
8.1 g/cm3 500 lb/ft3
Embodied Carbon
3.3 kg CO2/kg material
Embodied Energy
55 MJ/kg 24 x 103 BTU/lb
Embodied Water
410 L/kg 49 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
6.0 MJ/m3
Resilience: Unit (Modulus of Resilience)
750 kJ/m3
Stiffness to Weight: Axial
7.8 points
Stiffness to Weight: Bending
20 points
Strength to Weight: Axial
24 points
Strength to Weight: Bending
22 points
Thermal Diffusivity
13 mm2/s
Thermal Shock Resistance
24 points
Alloy Composition
Among wrought copper alloys, the composition of C62500 bronze is notable for including aluminum (Al) and containing a comparatively high amount of iron (Fe). Aluminum is used to add strength and oxidation resistance. Iron is used to increase strength inexpensively.
| Cu | 78.5 to 84 | |
| Al | 12.5 to 13.5 | |
| Fe | 3.5 to 5.5 | |
| Mn | 0 to 2.0 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.