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CR020A Copper vs. C95600 Bronze

Both CR020A copper and C95600 bronze 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 CR020A copper and the bottom bar is C95600 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 15
15
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 43
42
Tensile Strength: Ultimate (UTS), MPa 220
500
Tensile Strength: Yield (Proof), MPa 130
230

Thermal Properties

Latent Heat of Fusion, J/g 210
260
Maximum Temperature: Mechanical, °C 200
210
Melting Completion (Liquidus), °C 1090
1000
Melting Onset (Solidus), °C 1040
980
Specific Heat Capacity, J/kg-K 390
430
Thermal Conductivity, W/m-K 380
39
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 100
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 31
28
Density, g/cm3 9.0
8.3
Embodied Carbon, kg CO2/kg material 2.6
3.0
Embodied Energy, MJ/kg 41
50
Embodied Water, L/kg 320
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
60
Resilience: Unit (Modulus of Resilience), kJ/m3 76
230
Stiffness to Weight: Axial, points 7.2
7.5
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 6.8
17
Strength to Weight: Bending, points 9.0
17
Thermal Diffusivity, mm2/s 110
11
Thermal Shock Resistance, points 7.8
18

Alloy Composition


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Aluminum (Al), % 0
6.0 to 8.0
Bismuth (Bi), % 0 to 0.00050
0
Copper (Cu), % 99.95 to 99.999
88 to 92.2
Lead (Pb), % 0 to 0.0050
0
Nickel (Ni), % 0
0 to 0.25
Phosphorus (P), % 0.0010 to 0.0060
0
Silicon (Si), % 0
1.8 to 3.2
Silver (Ag), % 0 to 0.015
0
Residuals, % 0
0 to 1.0