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C18700 Copper vs. C84500 Brass

Both C18700 copper and C84500 brass are copper alloys. They have 79% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C18700 copper and the bottom bar is C84500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 9.0 to 9.6
28
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 43
39
Tensile Strength: Ultimate (UTS), MPa 290 to 330
240
Tensile Strength: Yield (Proof), MPa 230 to 250
97

Thermal Properties

Latent Heat of Fusion, J/g 210
180
Maximum Temperature: Mechanical, °C 200
150
Melting Completion (Liquidus), °C 1080
980
Melting Onset (Solidus), °C 950
840
Specific Heat Capacity, J/kg-K 380
360
Thermal Conductivity, W/m-K 380
72
Thermal Expansion, µm/m-K 17
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
16
Electrical Conductivity: Equal Weight (Specific), % IACS 99
17

Otherwise Unclassified Properties

Base Metal Price, % relative 30
28
Density, g/cm3 9.0
8.7
Embodied Carbon, kg CO2/kg material 2.6
2.9
Embodied Energy, MJ/kg 41
47
Embodied Water, L/kg 310
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
54
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
45
Stiffness to Weight: Axial, points 7.1
6.6
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 9.0 to 10
7.7
Strength to Weight: Bending, points 11 to 12
9.8
Thermal Diffusivity, mm2/s 110
23
Thermal Shock Resistance, points 10 to 12
8.6

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 98 to 99.2
77 to 79
Iron (Fe), % 0
0 to 0.4
Lead (Pb), % 0.8 to 1.5
6.0 to 7.5
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.0 to 4.0
Zinc (Zn), % 0
10 to 14
Residuals, % 0
0 to 0.7