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CR021A Copper vs. CC760S Brass

Both CR021A copper and CC760S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 86% 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 CR021A copper and the bottom bar is CC760S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 15
22
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 43
42
Tensile Strength: Ultimate (UTS), MPa 230
180
Tensile Strength: Yield (Proof), MPa 140
80

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
940
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 380
150
Thermal Expansion, µm/m-K 17
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
38
Electrical Conductivity: Equal Weight (Specific), % IACS 99
40

Otherwise Unclassified Properties

Base Metal Price, % relative 31
28
Density, g/cm3 9.0
8.6
Embodied Carbon, kg CO2/kg material 2.6
2.6
Embodied Energy, MJ/kg 41
43
Embodied Water, L/kg 320
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
33
Resilience: Unit (Modulus of Resilience), kJ/m3 83
29
Stiffness to Weight: Axial, points 7.2
7.2
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 7.1
5.8
Strength to Weight: Bending, points 9.3
8.2
Thermal Diffusivity, mm2/s 110
45
Thermal Shock Resistance, points 8.1
6.2

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Arsenic (As), % 0
0.050 to 0.15
Bismuth (Bi), % 0 to 0.00050
0
Copper (Cu), % 99.95 to 99.998
83 to 88
Iron (Fe), % 0
0 to 0.15
Lead (Pb), % 0 to 0.0050
0 to 0.5
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0
0 to 0.1
Phosphorus (P), % 0.0020 to 0.0070
0
Silicon (Si), % 0
0 to 0.020
Silver (Ag), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.3
Zinc (Zn), % 0
10.7 to 17