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C87600 Bronze vs. CR008A Copper

Both C87600 bronze and CR008A 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 C87600 bronze and the bottom bar is CR008A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 18
15
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 42
43
Tensile Strength: Ultimate (UTS), MPa 470
220
Tensile Strength: Yield (Proof), MPa 230
130

Thermal Properties

Latent Heat of Fusion, J/g 280
210
Maximum Temperature: Mechanical, °C 190
200
Melting Completion (Liquidus), °C 970
1090
Melting Onset (Solidus), °C 860
1040
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 28
380
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.0
100
Electrical Conductivity: Equal Weight (Specific), % IACS 6.4
100

Otherwise Unclassified Properties

Base Metal Price, % relative 29
31
Density, g/cm3 8.5
9.0
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 43
41
Embodied Water, L/kg 300
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71
29
Resilience: Unit (Modulus of Resilience), kJ/m3 240
76
Stiffness to Weight: Axial, points 7.4
7.2
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 16
6.8
Strength to Weight: Bending, points 16
9.0
Thermal Diffusivity, mm2/s 8.1
110
Thermal Shock Resistance, points 17
7.8

Alloy Composition

Bismuth (Bi), % 0
0 to 0.00050
Copper (Cu), % 88 to 92.5
99.95 to 100
Lead (Pb), % 0 to 0.5
0 to 0.0050
Silicon (Si), % 3.5 to 5.5
0
Silver (Ag), % 0
0 to 0.015
Zinc (Zn), % 4.0 to 7.0
0
Residuals, % 0 to 0.5
0