Heat Treated (HT) C94700 Bronze
Heat treated C94700 bronze is C94700 bronze in the heat treated (HT) condition. The graph bars on the material properties cards below compare heat treated C94700 bronze to: cast 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
7.9 %
Poisson's Ratio
0.34
Shear Modulus
43 GPa 6.2 x 106 psi
Tensile Strength: Ultimate (UTS)
590 MPa 85 x 103 psi
Tensile Strength: Yield (Proof)
400 MPa 58 x 103 psi
Thermal Properties
Latent Heat of Fusion
200 J/g
Maximum Temperature: Mechanical
190 °C 380 °F
Melting Completion (Liquidus)
1030 °C 1880 °F
Melting Onset (Solidus)
900 °C 1660 °F
Specific Heat Capacity
380 J/kg-K 0.090 BTU/lb-°F
Thermal Conductivity
54 W/m-K 31 BTU/h-ft-°F
Thermal Expansion
17 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
12 % IACS
Electrical Conductivity: Equal Weight (Specific)
12 % IACS
Otherwise Unclassified Properties
Base Metal Price
34 % relative
Density
8.8 g/cm3 550 lb/ft3
Embodied Carbon
3.5 kg CO2/kg material
Embodied Energy
56 MJ/kg 24 x 103 BTU/lb
Embodied Water
350 L/kg 41 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
41 MJ/m3
Resilience: Unit (Modulus of Resilience)
700 kJ/m3
Stiffness to Weight: Axial
7.3 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
19 points
Strength to Weight: Bending
18 points
Thermal Diffusivity
16 mm2/s
Thermal Shock Resistance
21 points
Alloy Composition
| Cu | 85 to 90 | |
| Ni | 4.5 to 6.0 | |
| Sn | 4.5 to 6.0 | |
| Zn | 1.0 to 2.5 | |
| Fe | 0 to 0.25 | |
| Mn | 0 to 0.2 | |
| Sb | 0 to 0.15 | |
| Pb | 0 to 0.1 | |
| P | 0 to 0.050 | |
| S | 0 to 0.050 | |
| Si | 0 to 0.0050 | |
| Al | 0 to 0.0050 | |
| res. | 0 to 1.3 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B505: Standard Specification for Copper Alloy Continuous Castings
ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001