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C95820 Bronze vs. CR012A Copper

Both C95820 bronze and CR012A copper are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 80% of their average alloy composition in common.

For each property being compared, the top bar is C95820 bronze and the bottom bar is CR012A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
120
Elongation at Break, % 15
15
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 44
43
Tensile Strength: Ultimate (UTS), MPa 730
220
Tensile Strength: Yield (Proof), MPa 310
130

Thermal Properties

Latent Heat of Fusion, J/g 230
210
Maximum Temperature: Mechanical, °C 230
200
Melting Completion (Liquidus), °C 1080
1090
Melting Onset (Solidus), °C 1020
1040
Specific Heat Capacity, J/kg-K 440
390
Thermal Conductivity, W/m-K 38
390
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
100
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
100

Otherwise Unclassified Properties

Base Metal Price, % relative 29
33
Density, g/cm3 8.3
9.0
Embodied Carbon, kg CO2/kg material 3.5
2.7
Embodied Energy, MJ/kg 56
42
Embodied Water, L/kg 380
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
29
Resilience: Unit (Modulus of Resilience), kJ/m3 400
76
Stiffness to Weight: Axial, points 8.0
7.2
Stiffness to Weight: Bending, points 20
18
Strength to Weight: Axial, points 24
6.8
Strength to Weight: Bending, points 22
9.0
Thermal Diffusivity, mm2/s 11
110
Thermal Shock Resistance, points 25
7.8

Alloy Composition

Aluminum (Al), % 9.0 to 10
0
Bismuth (Bi), % 0
0 to 0.00050
Copper (Cu), % 77.5 to 82.5
99.85 to 99.94
Iron (Fe), % 4.0 to 5.0
0
Lead (Pb), % 0 to 0.020
0
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 4.5 to 5.8
0
Oxygen (O), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0
Silver (Ag), % 0
0.060 to 0.080
Tin (Sn), % 0 to 0.020
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.8
0