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C68300 Brass vs. 1085 Aluminum

C68300 brass belongs to the copper alloys classification, while 1085 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is C68300 brass and the bottom bar is 1085 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
68
Elongation at Break, % 15
4.5 to 39
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 40
26
Shear Strength, MPa 260
48 to 79
Tensile Strength: Ultimate (UTS), MPa 430
73 to 140
Tensile Strength: Yield (Proof), MPa 260
17 to 120

Thermal Properties

Latent Heat of Fusion, J/g 180
400
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 900
640
Melting Onset (Solidus), °C 890
640
Specific Heat Capacity, J/kg-K 390
900
Thermal Conductivity, W/m-K 120
230
Thermal Expansion, µm/m-K 20
23

Otherwise Unclassified Properties

Base Metal Price, % relative 23
9.5
Density, g/cm3 8.0
2.7
Embodied Carbon, kg CO2/kg material 2.8
8.3
Embodied Energy, MJ/kg 46
160
Embodied Water, L/kg 340
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 56
4.8 to 21
Resilience: Unit (Modulus of Resilience), kJ/m3 330
2.1 to 110
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 20
50
Strength to Weight: Axial, points 15
7.5 to 14
Strength to Weight: Bending, points 16
14 to 22
Thermal Diffusivity, mm2/s 38
94
Thermal Shock Resistance, points 14
3.3 to 6.1

Alloy Composition

Aluminum (Al), % 0
99.85 to 100
Antimony (Sb), % 0.3 to 1.0
0
Cadmium (Cd), % 0 to 0.010
0
Copper (Cu), % 59 to 63
0 to 0.030
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0
0 to 0.12
Lead (Pb), % 0 to 0.090
0
Magnesium (Mg), % 0
0 to 0.020
Manganese (Mn), % 0
0 to 0.020
Silicon (Si), % 0.3 to 1.0
0 to 0.1
Tin (Sn), % 0.050 to 0.2
0
Titanium (Ti), % 0
0 to 0.020
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 34.2 to 40.4
0 to 0.030
Residuals, % 0
0 to 0.010