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C69710 Brass vs. C18900 Copper

Both C69710 brass and C18900 copper are copper alloys. They have 78% of their average alloy composition in common.

For each property being compared, the top bar is C69710 brass and the bottom bar is C18900 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 25
14 to 48
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 41
43
Shear Strength, MPa 300
190 to 300
Tensile Strength: Ultimate (UTS), MPa 470
260 to 500
Tensile Strength: Yield (Proof), MPa 230
67 to 390

Thermal Properties

Latent Heat of Fusion, J/g 240
210
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 930
1080
Melting Onset (Solidus), °C 880
1020
Specific Heat Capacity, J/kg-K 400
390
Thermal Conductivity, W/m-K 40
130
Thermal Expansion, µm/m-K 19
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
30
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
30

Otherwise Unclassified Properties

Base Metal Price, % relative 26
31
Density, g/cm3 8.3
8.9
Embodied Carbon, kg CO2/kg material 2.7
2.7
Embodied Energy, MJ/kg 44
42
Embodied Water, L/kg 310
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
65 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 250
20 to 660
Stiffness to Weight: Axial, points 7.3
7.2
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 16
8.2 to 16
Strength to Weight: Bending, points 16
10 to 16
Thermal Diffusivity, mm2/s 12
38
Thermal Shock Resistance, points 16
9.3 to 18

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Arsenic (As), % 0.030 to 0.060
0
Copper (Cu), % 75 to 80
97.7 to 99.15
Iron (Fe), % 0 to 0.2
0
Lead (Pb), % 0.5 to 1.5
0 to 0.020
Manganese (Mn), % 0 to 0.4
0.1 to 0.3
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 2.5 to 3.5
0.15 to 0.4
Tin (Sn), % 0
0.6 to 0.9
Zinc (Zn), % 13.8 to 22
0 to 0.1
Residuals, % 0
0 to 0.5