Full-Hard (H04) C65500 Bronze
H04 C65500 bronze is C65500 bronze in the H04 (full hard) temper. The graph bars on the material properties cards below compare H04 C65500 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
11 %
Fatigue Strength
200 MPa 29 x 103 psi
Poisson's Ratio
0.34
Rockwell B Hardness
88
Shear Modulus
43 GPa 6.3 x 106 psi
Shear Strength
390 MPa 57 x 103 psi
Tensile Strength: Ultimate (UTS)
630 MPa 92 x 103 psi
Tensile Strength: Yield (Proof)
370 MPa 53 x 103 psi
Thermal Properties
Latent Heat of Fusion
260 J/g
Maximum Temperature: Mechanical
200 °C 390 °F
Melting Completion (Liquidus)
1030 °C 1880 °F
Melting Onset (Solidus)
970 °C 1780 °F
Specific Heat Capacity
400 J/kg-K 0.1 BTU/lb-°F
Thermal Conductivity
36 W/m-K 21 BTU/h-ft-°F
Thermal Expansion
18 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
7.0 % IACS
Electrical Conductivity: Equal Weight (Specific)
7.3 % IACS
Otherwise Unclassified Properties
Base Metal Price
29 % relative
Calomel Potential
-270 mV
Density
8.6 g/cm3 540 lb/ft3
Embodied Carbon
2.7 kg CO2/kg material
Embodied Energy
42 MJ/kg 18 x 103 BTU/lb
Embodied Water
300 L/kg 36 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
61 MJ/m3
Resilience: Unit (Modulus of Resilience)
580 kJ/m3
Stiffness to Weight: Axial
7.5 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
20 points
Strength to Weight: Bending
19 points
Thermal Diffusivity
10 mm2/s
Thermal Shock Resistance
22 points
Alloy Composition
| Cu | 91.5 to 96.7 | |
| Si | 2.8 to 3.8 | |
| Mn | 0.5 to 1.3 | |
| Zn | 0 to 1.5 | |
| Fe | 0 to 0.8 | |
| Ni | 0 to 0.6 | |
| 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
ASTM B98: Standard Specification for Copper-Silicon Alloy Rod, Bar and Shapes
ASTM B96: Standard Specification for Copper-Silicon Alloy Plate, Sheet, Strip, and Rolled Bar for General Purposes and Pressure Vessels
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
Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993