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CR012A Copper vs. C21000 Brass

Both CR012A copper and C21000 brass are copper alloys. They have a very high 95% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is CR012A copper and the bottom bar is C21000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 15
2.9 to 50
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 43
43
Tensile Strength: Ultimate (UTS), MPa 220
240 to 450
Tensile Strength: Yield (Proof), MPa 130
69 to 440

Thermal Properties

Latent Heat of Fusion, J/g 210
200
Maximum Temperature: Mechanical, °C 200
190
Melting Completion (Liquidus), °C 1090
1070
Melting Onset (Solidus), °C 1040
1050
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 390
230
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
56
Electrical Conductivity: Equal Weight (Specific), % IACS 100
57

Otherwise Unclassified Properties

Base Metal Price, % relative 33
30
Density, g/cm3 9.0
8.8
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 42
42
Embodied Water, L/kg 360
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
13 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 76
21 to 830
Stiffness to Weight: Axial, points 7.2
7.2
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 6.8
7.4 to 14
Strength to Weight: Bending, points 9.0
9.6 to 15
Thermal Diffusivity, mm2/s 110
69
Thermal Shock Resistance, points 7.8
8.1 to 15

Alloy Composition


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Bismuth (Bi), % 0 to 0.00050
0
Copper (Cu), % 99.85 to 99.94
94 to 96
Iron (Fe), % 0
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Oxygen (O), % 0 to 0.040
0
Silver (Ag), % 0.060 to 0.080
0
Zinc (Zn), % 0
3.7 to 6.0
Residuals, % 0
0 to 0.2