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CR022A Copper vs. C87500 Brass

Both CR022A copper and C87500 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 82% of their average alloy composition in common.

For each property being compared, the top bar is CR022A copper and the bottom bar is C87500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 15
18
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 43
42
Tensile Strength: Ultimate (UTS), MPa 230
460
Tensile Strength: Yield (Proof), MPa 140
190

Thermal Properties

Latent Heat of Fusion, J/g 210
260
Maximum Temperature: Mechanical, °C 200
170
Melting Completion (Liquidus), °C 1090
920
Melting Onset (Solidus), °C 1040
820
Specific Heat Capacity, J/kg-K 390
410
Thermal Conductivity, W/m-K 380
28
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 100
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 31
27
Density, g/cm3 9.0
8.3
Embodied Carbon, kg CO2/kg material 2.6
2.7
Embodied Energy, MJ/kg 41
44
Embodied Water, L/kg 310
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
67
Resilience: Unit (Modulus of Resilience), kJ/m3 83
160
Stiffness to Weight: Axial, points 7.2
7.4
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 7.1
16
Strength to Weight: Bending, points 9.3
16
Thermal Diffusivity, mm2/s 110
8.3
Thermal Shock Resistance, points 8.1
17

Alloy Composition


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Aluminum (Al), % 0
0 to 0.5
Antimony (Sb), % 0 to 0.00040
0
Arsenic (As), % 0 to 0.00050
0
Bismuth (Bi), % 0 to 0.00020
0
Cadmium (Cd), % 0 to 0.00010
0
Copper (Cu), % 99.99 to 99.999
79 to 85
Iron (Fe), % 0 to 0.0010
0
Lead (Pb), % 0 to 0.00050
0 to 0.5
Manganese (Mn), % 0 to 0.00050
0
Nickel (Ni), % 0 to 0.0010
0
Phosphorus (P), % 0.0010 to 0.0060
0
Selenium (Se), % 0 to 0.00020
0
Silicon (Si), % 0
3.0 to 5.0
Silver (Ag), % 0 to 0.0025
0
Sulfur (S), % 0 to 0.0015
0
Tellurium (Te), % 0 to 0.00020
0
Tin (Sn), % 0 to 0.00020
0
Zinc (Zn), % 0 to 0.00010
12 to 16
Residuals, % 0
0 to 0.5