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CR011A Copper vs. C95820 Bronze

Both CR011A copper and C95820 bronze 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 CR011A copper and the bottom bar is C95820 bronze.

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 43
44
Tensile Strength: Ultimate (UTS), MPa 220
730
Tensile Strength: Yield (Proof), MPa 130
310

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 32
29
Density, g/cm3 9.0
8.3
Embodied Carbon, kg CO2/kg material 2.6
3.5
Embodied Energy, MJ/kg 42
56
Embodied Water, L/kg 340
380

Common Calculations

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

Alloy Composition


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Aluminum (Al), % 0
9.0 to 10
Bismuth (Bi), % 0 to 0.00050
0
Copper (Cu), % 99.88 to 99.97
77.5 to 82.5
Iron (Fe), % 0
4.0 to 5.0
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
4.5 to 5.8
Oxygen (O), % 0 to 0.040
0
Silicon (Si), % 0
0 to 0.1
Silver (Ag), % 0.030 to 0.050
0
Tin (Sn), % 0
0 to 0.020
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.8