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CR012A Copper vs. C92300 Bronze

Both CR012A copper and C92300 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 87% of their average alloy composition in common.

For each property being compared, the top bar is CR012A copper and the bottom bar is C92300 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 15
19
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 43
40
Tensile Strength: Ultimate (UTS), MPa 220
300
Tensile Strength: Yield (Proof), MPa 130
140

Thermal Properties

Latent Heat of Fusion, J/g 210
190
Maximum Temperature: Mechanical, °C 200
170
Melting Completion (Liquidus), °C 1090
1000
Melting Onset (Solidus), °C 1040
850
Specific Heat Capacity, J/kg-K 390
370
Thermal Conductivity, W/m-K 390
75
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
12
Electrical Conductivity: Equal Weight (Specific), % IACS 100
12

Otherwise Unclassified Properties

Base Metal Price, % relative 33
33
Density, g/cm3 9.0
8.7
Embodied Carbon, kg CO2/kg material 2.7
3.4
Embodied Energy, MJ/kg 42
56
Embodied Water, L/kg 360
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
47
Resilience: Unit (Modulus of Resilience), kJ/m3 76
86
Stiffness to Weight: Axial, points 7.2
6.9
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 6.8
9.5
Strength to Weight: Bending, points 9.0
11
Thermal Diffusivity, mm2/s 110
23
Thermal Shock Resistance, points 7.8
11

Alloy Composition


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Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Bismuth (Bi), % 0 to 0.00050
0
Copper (Cu), % 99.85 to 99.94
85 to 89
Iron (Fe), % 0
0 to 0.25
Lead (Pb), % 0
0.3 to 1.0
Nickel (Ni), % 0
0 to 1.0
Oxygen (O), % 0 to 0.040
0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0
0 to 0.0050
Silver (Ag), % 0.060 to 0.080
0
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
7.5 to 9.0
Zinc (Zn), % 0
2.5 to 5.0
Residuals, % 0
0 to 0.7