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C18700 Copper vs. C44400 Brass

Both C18700 copper and C44400 brass are copper alloys. They have 72% 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 C18700 copper and the bottom bar is C44400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 43
41
Tensile Strength: Ultimate (UTS), MPa 290 to 330
350
Tensile Strength: Yield (Proof), MPa 230 to 250
120

Thermal Properties

Latent Heat of Fusion, J/g 210
180
Maximum Temperature: Mechanical, °C 200
140
Melting Completion (Liquidus), °C 1080
940
Melting Onset (Solidus), °C 950
900
Specific Heat Capacity, J/kg-K 380
380
Thermal Conductivity, W/m-K 380
110
Thermal Expansion, µm/m-K 17
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
25
Electrical Conductivity: Equal Weight (Specific), % IACS 99
27

Otherwise Unclassified Properties

Base Metal Price, % relative 30
26
Density, g/cm3 9.0
8.3
Embodied Carbon, kg CO2/kg material 2.6
2.8
Embodied Energy, MJ/kg 41
46
Embodied Water, L/kg 310
330

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
65
Stiffness to Weight: Axial, points 7.1
7.2
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 9.0 to 10
12
Strength to Weight: Bending, points 11 to 12
13
Thermal Diffusivity, mm2/s 110
35
Thermal Shock Resistance, points 10 to 12
12

Alloy Composition

Antimony (Sb), % 0
0.020 to 0.1
Copper (Cu), % 98 to 99.2
70 to 73
Iron (Fe), % 0
0 to 0.060
Lead (Pb), % 0.8 to 1.5
0 to 0.070
Tin (Sn), % 0
0.9 to 1.2
Zinc (Zn), % 0
25.2 to 29.1
Residuals, % 0
0 to 0.4