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C68700 Brass vs. C18400 Copper

Both C68700 brass and C18400 copper 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 (4, in this case) are not shown.

For each property being compared, the top bar is C68700 brass and the bottom bar is C18400 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 41
44
Tensile Strength: Ultimate (UTS), MPa 390
270 to 490
Tensile Strength: Yield (Proof), MPa 140
110 to 480

Thermal Properties

Latent Heat of Fusion, J/g 190
210
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 970
1080
Melting Onset (Solidus), °C 930
1070
Specific Heat Capacity, J/kg-K 400
390
Thermal Conductivity, W/m-K 100
320
Thermal Expansion, µm/m-K 19
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
80
Electrical Conductivity: Equal Weight (Specific), % IACS 25
81

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 90
54 to 980
Stiffness to Weight: Axial, points 7.3
7.3
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 13
8.5 to 15
Strength to Weight: Bending, points 14
10 to 16
Thermal Diffusivity, mm2/s 30
94
Thermal Shock Resistance, points 13
9.6 to 17

Alloy Composition

Aluminum (Al), % 1.8 to 2.5
0
Arsenic (As), % 0.020 to 0.1
0 to 0.0050
Calcium (Ca), % 0
0 to 0.0050
Chromium (Cr), % 0
0.4 to 1.2
Copper (Cu), % 76 to 79
97.2 to 99.6
Iron (Fe), % 0 to 0.060
0 to 0.15
Lead (Pb), % 0 to 0.070
0
Lithium (Li), % 0
0 to 0.050
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0
0 to 0.1
Zinc (Zn), % 17.8 to 22.2
0 to 0.7
Residuals, % 0
0 to 0.5