Half-Hard (H02) C67000 Bronze
H02 C67000 bronze is C67000 bronze in the H02 (half hard) temper. The graph bars on the material properties cards below compare H02 C67000 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
8.0 %
Poisson's Ratio
0.31
Shear Modulus
42 GPa 6.1 x 106 psi
Shear Strength
480 MPa 70 x 103 psi
Tensile Strength: Ultimate (UTS)
820 MPa 120 x 103 psi
Tensile Strength: Yield (Proof)
460 MPa 67 x 103 psi
Thermal Properties
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
160 °C 310 °F
Melting Completion (Liquidus)
900 °C 1650 °F
Melting Onset (Solidus)
850 °C 1570 °F
Specific Heat Capacity
410 J/kg-K 0.1 BTU/lb-°F
Thermal Conductivity
99 W/m-K 57 BTU/h-ft-°F
Thermal Expansion
20 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
22 % IACS
Electrical Conductivity: Equal Weight (Specific)
25 % IACS
Otherwise Unclassified Properties
Base Metal Price
23 % relative
Density
7.9 g/cm3 500 lb/ft3
Embodied Carbon
2.9 kg CO2/kg material
Embodied Energy
49 MJ/kg 21 x 103 BTU/lb
Embodied Water
350 L/kg 42 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
56 MJ/m3
Resilience: Unit (Modulus of Resilience)
970 kJ/m3
Stiffness to Weight: Axial
7.8 points
Stiffness to Weight: Bending
20 points
Strength to Weight: Axial
29 points
Strength to Weight: Bending
25 points
Thermal Diffusivity
30 mm2/s
Thermal Shock Resistance
27 points
Alloy Composition
| Cu | 63 to 68 | |
| Zn | 21.8 to 32.5 | |
| Al | 3.0 to 6.0 | |
| Mn | 2.5 to 5.0 | |
| Fe | 2.0 to 4.0 | |
| Sn | 0 to 0.5 | |
| Pb | 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 B138: Standard Specification for Manganese Bronze Rod, Bar, and Shapes
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