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C87700 Bronze vs. C96800 Copper

Both C87700 bronze and C96800 copper are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 90% of their average alloy composition in common.

For each property being compared, the top bar is C87700 bronze and the bottom bar is C96800 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 3.6
3.4
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 42
46
Tensile Strength: Ultimate (UTS), MPa 300
1010
Tensile Strength: Yield (Proof), MPa 120
860

Thermal Properties

Latent Heat of Fusion, J/g 250
220
Maximum Temperature: Mechanical, °C 180
220
Melting Completion (Liquidus), °C 980
1120
Melting Onset (Solidus), °C 900
1060
Specific Heat Capacity, J/kg-K 400
390
Thermal Conductivity, W/m-K 120
52
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
10
Electrical Conductivity: Equal Weight (Specific), % IACS 48
10

Otherwise Unclassified Properties

Base Metal Price, % relative 29
34
Density, g/cm3 8.5
8.9
Embodied Carbon, kg CO2/kg material 2.7
3.4
Embodied Energy, MJ/kg 45
52
Embodied Water, L/kg 310
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.6
33
Resilience: Unit (Modulus of Resilience), kJ/m3 64
3000
Stiffness to Weight: Axial, points 7.4
7.6
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 9.8
32
Strength to Weight: Bending, points 12
25
Thermal Diffusivity, mm2/s 34
15
Thermal Shock Resistance, points 11
35

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Antimony (Sb), % 0 to 0.1
0 to 0.020
Copper (Cu), % 87.5 to 90.5
87.1 to 90.5
Iron (Fe), % 0 to 0.5
0 to 0.5
Lead (Pb), % 0 to 0.090
0 to 0.0050
Manganese (Mn), % 0 to 0.8
0.050 to 0.3
Nickel (Ni), % 0 to 0.25
9.5 to 10.5
Phosphorus (P), % 0 to 0.15
0 to 0.0050
Silicon (Si), % 2.5 to 3.5
0
Sulfur (S), % 0
0 to 0.0025
Tin (Sn), % 0 to 2.0
0
Zinc (Zn), % 7.0 to 9.0
0 to 1.0
Residuals, % 0
0 to 0.5