3/4-Hard (H03) C40500 Penny Bronze
H03 C40500 penny bronze is C40500 penny bronze in the H03 (3/4 hard) temper. The graph bars on the material properties cards below compare H03 C40500 penny 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 17 x 106 psi
Elongation at Break
12 %
Poisson's Ratio
0.34
Rockwell B Hardness
67
Rockwell Superficial 30T Hardness
62
Shear Modulus
43 GPa 6.2 x 106 psi
Shear Strength
260 MPa 38 x 103 psi
Tensile Strength: Ultimate (UTS)
400 MPa 58 x 103 psi
Tensile Strength: Yield (Proof)
380 MPa 55 x 103 psi
Thermal Properties
Latent Heat of Fusion
200 J/g
Maximum Temperature: Mechanical
190 °C 370 °F
Melting Completion (Liquidus)
1060 °C 1940 °F
Melting Onset (Solidus)
1020 °C 1880 °F
Specific Heat Capacity
380 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
160 W/m-K 95 BTU/h-ft-°F
Thermal Expansion
18 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
41 % IACS
Electrical Conductivity: Equal Weight (Specific)
42 % IACS
Otherwise Unclassified Properties
Base Metal Price
30 % relative
Density
8.8 g/cm3 550 lb/ft3
Embodied Carbon
2.7 kg CO2/kg material
Embodied Energy
43 MJ/kg 19 x 103 BTU/lb
Embodied Water
320 L/kg 38 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
47 MJ/m3
Resilience: Unit (Modulus of Resilience)
620 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
13 points
Strength to Weight: Bending
14 points
Thermal Diffusivity
48 mm2/s
Thermal Shock Resistance
14 points
Alloy Composition
| Cu | 94 to 96 | |
| Zn | 2.1 to 5.3 | |
| Sn | 0.7 to 1.3 | |
| Fe | 0 to 0.050 | |
| Pb | 0 to 0.050 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993