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C81500 Copper vs. C68800 Brass

Both C81500 copper and C68800 brass are copper alloys. They have 74% of their average alloy composition in common. There are 28 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 C81500 copper and the bottom bar is C68800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 17
2.0 to 36
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 44
41
Tensile Strength: Ultimate (UTS), MPa 350
570 to 890
Tensile Strength: Yield (Proof), MPa 280
390 to 790

Thermal Properties

Latent Heat of Fusion, J/g 210
190
Maximum Temperature: Mechanical, °C 200
160
Melting Completion (Liquidus), °C 1090
960
Melting Onset (Solidus), °C 1080
950
Specific Heat Capacity, J/kg-K 390
400
Thermal Conductivity, W/m-K 320
40
Thermal Expansion, µm/m-K 17
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 82
18
Electrical Conductivity: Equal Weight (Specific), % IACS 83
20

Otherwise Unclassified Properties

Base Metal Price, % relative 31
26
Density, g/cm3 8.9
8.2
Embodied Carbon, kg CO2/kg material 2.6
2.8
Embodied Energy, MJ/kg 41
48
Embodied Water, L/kg 310
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 56
16 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 330
710 to 2860
Stiffness to Weight: Axial, points 7.3
7.3
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 11
19 to 30
Strength to Weight: Bending, points 12
19 to 25
Thermal Diffusivity, mm2/s 91
12
Thermal Shock Resistance, points 12
19 to 30

Alloy Composition

Aluminum (Al), % 0 to 0.1
3.0 to 3.8
Chromium (Cr), % 0.4 to 1.5
0
Cobalt (Co), % 0
0.25 to 0.55
Copper (Cu), % 97.4 to 99.6
70.8 to 75.5
Iron (Fe), % 0 to 0.1
0 to 0.2
Lead (Pb), % 0 to 0.020
0 to 0.050
Silicon (Si), % 0 to 0.15
0
Tin (Sn), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
21.3 to 24.1
Residuals, % 0 to 0.5
0 to 0.5