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CR012A Copper vs. CC755S Brass

Both CR012A copper and CC755S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 60% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is CR012A copper and the bottom bar is CC755S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
100
Elongation at Break, % 15
9.5
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 43
40
Tensile Strength: Ultimate (UTS), MPa 220
390
Tensile Strength: Yield (Proof), MPa 130
250

Thermal Properties

Latent Heat of Fusion, J/g 210
170
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 1090
820
Melting Onset (Solidus), °C 1040
780
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 390
120
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
27
Electrical Conductivity: Equal Weight (Specific), % IACS 100
30

Otherwise Unclassified Properties

Base Metal Price, % relative 33
23
Density, g/cm3 9.0
8.1
Embodied Carbon, kg CO2/kg material 2.7
2.7
Embodied Energy, MJ/kg 42
46
Embodied Water, L/kg 360
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
33
Resilience: Unit (Modulus of Resilience), kJ/m3 76
290
Stiffness to Weight: Axial, points 7.2
7.1
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 6.8
14
Strength to Weight: Bending, points 9.0
15
Thermal Diffusivity, mm2/s 110
38
Thermal Shock Resistance, points 7.8
13

Alloy Composition

Aluminum (Al), % 0
0.4 to 0.7
Bismuth (Bi), % 0 to 0.00050
0
Copper (Cu), % 99.85 to 99.94
59.5 to 61
Iron (Fe), % 0
0.050 to 0.2
Lead (Pb), % 0
1.2 to 1.7
Manganese (Mn), % 0
0 to 0.050
Nickel (Ni), % 0
0 to 0.2
Oxygen (O), % 0 to 0.040
0
Silicon (Si), % 0
0 to 0.050
Silver (Ag), % 0.060 to 0.080
0
Tin (Sn), % 0
0 to 0.3
Zinc (Zn), % 0
35.8 to 38.9