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CR020A Copper vs. C87800 Brass

Both CR020A copper and C87800 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. 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 CR020A copper and the bottom bar is C87800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 15
25
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 43
42
Tensile Strength: Ultimate (UTS), MPa 220
590
Tensile Strength: Yield (Proof), MPa 130
350

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 320
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
130
Resilience: Unit (Modulus of Resilience), kJ/m3 76
540
Stiffness to Weight: Axial, points 7.2
7.4
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 6.8
20
Strength to Weight: Bending, points 9.0
19
Thermal Diffusivity, mm2/s 110
8.3
Thermal Shock Resistance, points 7.8
21

Alloy Composition


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Aluminum (Al), % 0
0 to 0.15
Antimony (Sb), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.050
Bismuth (Bi), % 0 to 0.00050
0
Copper (Cu), % 99.95 to 99.999
80 to 84.2
Iron (Fe), % 0
0 to 0.15
Lead (Pb), % 0 to 0.0050
0 to 0.15
Magnesium (Mg), % 0
0 to 0.010
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 0
0 to 0.2
Phosphorus (P), % 0.0010 to 0.0060
0 to 0.010
Silicon (Si), % 0
3.8 to 4.2
Silver (Ag), % 0 to 0.015
0
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
0 to 0.25
Zinc (Zn), % 0
12 to 16
Residuals, % 0
0 to 0.5