Half-Hard (H02) C52400 Bronze
H02 C52400 bronze is C52400 bronze in the H02 (half hard) temper. It has the highest ductility compared to the other variants of C52400 bronze. The graph bars on the material properties cards below compare H02 C52400 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
32 %
Poisson's Ratio
0.34
Rockwell B Hardness
85
Rockwell Superficial 30T Hardness
72
Shear Modulus
41 GPa 5.9 x 106 psi
Shear Strength
380 MPa 55 x 103 psi
Tensile Strength: Ultimate (UTS)
580 MPa 83 x 103 psi
Tensile Strength: Yield (Proof)
420 MPa 60 x 103 psi
Thermal Properties
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
1000 °C 1830 °F
Melting Onset (Solidus)
840 °C 1550 °F
Specific Heat Capacity
370 J/kg-K 0.088 BTU/lb-°F
Thermal Conductivity
50 W/m-K 29 BTU/h-ft-°F
Thermal Expansion
18 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
11 % IACS
Electrical Conductivity: Equal Weight (Specific)
11 % IACS
Otherwise Unclassified Properties
Base Metal Price
35 % relative
Density
8.8 g/cm3 550 lb/ft3
Embodied Carbon
3.6 kg CO2/kg material
Embodied Energy
58 MJ/kg 25 x 103 BTU/lb
Embodied Water
390 L/kg 46 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
170 MJ/m3
Resilience: Unit (Modulus of Resilience)
800 kJ/m3
Stiffness to Weight: Axial
6.9 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
18 points
Strength to Weight: Bending
18 points
Thermal Diffusivity
15 mm2/s
Thermal Shock Resistance
21 points
Alloy Composition
| Cu | 87.8 to 91 | |
| Sn | 9.0 to 11 | |
| P | 0.030 to 0.35 | |
| Zn | 0 to 0.2 | |
| Fe | 0 to 0.1 | |
| 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 B103: Standard Specification for Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar
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