Drawn and Stress Relieved (HR50) C63000 Bronze
HR50 C63000 bronze is C63000 bronze in the HR50 (drawn and stress relieved) condition. It has the second highest strength and lowest ductility compared to the other variants of C63000 bronze. The graph bars on the material properties cards below compare HR50 C63000 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
7.9 %
Poisson's Ratio
0.34
Shear Modulus
44 GPa 6.3 x 106 psi
Shear Strength
420 MPa 61 x 103 psi
Tensile Strength: Ultimate (UTS)
720 MPa 100 x 103 psi
Tensile Strength: Yield (Proof)
360 MPa 52 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)
1040 °C 1900 °F
Specific Heat Capacity
440 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
39 W/m-K 23 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
8.2 g/cm3 510 lb/ft3
Embodied Carbon
3.5 kg CO2/kg material
Embodied Energy
57 MJ/kg 24 x 103 BTU/lb
Embodied Water
390 L/kg 46 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
47 MJ/m3
Resilience: Unit (Modulus of Resilience)
550 kJ/m3
Stiffness to Weight: Axial
7.9 points
Stiffness to Weight: Bending
20 points
Strength to Weight: Axial
24 points
Strength to Weight: Bending
22 points
Thermal Diffusivity
11 mm2/s
Thermal Shock Resistance
25 points
Alloy Composition
| Cu | 76.8 to 85 | |
| Al | 9.0 to 11 | |
| Ni | 4.0 to 5.5 | |
| Fe | 2.0 to 4.0 | |
| Mn | 0 to 1.5 | |
| Zn | 0 to 0.3 | |
| Si | 0 to 0.25 | |
| Sn | 0 to 0.2 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
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)
ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001