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C81500 Copper vs. C68700 Brass

Both C81500 copper and C68700 brass are copper alloys. They have 78% of their average alloy composition in common. There are 26 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 C81500 copper and the bottom bar is C68700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 44
41
Tensile Strength: Ultimate (UTS), MPa 350
390
Tensile Strength: Yield (Proof), MPa 280
140

Thermal Properties

Latent Heat of Fusion, J/g 210
190
Maximum Temperature: Mechanical, °C 200
160
Melting Completion (Liquidus), °C 1090
970
Melting Onset (Solidus), °C 1080
930
Specific Heat Capacity, J/kg-K 390
400
Thermal Conductivity, W/m-K 320
100
Thermal Expansion, µm/m-K 17
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 82
23
Electrical Conductivity: Equal Weight (Specific), % IACS 83
25

Otherwise Unclassified Properties

Base Metal Price, % relative 31
26
Density, g/cm3 8.9
8.3
Embodied Carbon, kg CO2/kg material 2.6
2.8
Embodied Energy, MJ/kg 41
46
Embodied Water, L/kg 310
340

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 330
90
Stiffness to Weight: Axial, points 7.3
7.3
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 11
13
Strength to Weight: Bending, points 12
14
Thermal Diffusivity, mm2/s 91
30
Thermal Shock Resistance, points 12
13

Alloy Composition

Aluminum (Al), % 0 to 0.1
1.8 to 2.5
Arsenic (As), % 0
0.020 to 0.1
Chromium (Cr), % 0.4 to 1.5
0
Copper (Cu), % 97.4 to 99.6
76 to 79
Iron (Fe), % 0 to 0.1
0 to 0.060
Lead (Pb), % 0 to 0.020
0 to 0.070
Silicon (Si), % 0 to 0.15
0
Tin (Sn), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
17.8 to 22.2
Residuals, % 0 to 0.5
0 to 0.5