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6351 Aluminum vs. C85500 Brass

6351 aluminum belongs to the aluminum alloys classification, while C85500 brass belongs to the copper alloys. There are 28 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 6351 aluminum and the bottom bar is C85500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
100
Elongation at Break, % 7.8 to 18
40
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 26
40
Tensile Strength: Ultimate (UTS), MPa 140 to 310
410
Tensile Strength: Yield (Proof), MPa 95 to 270
160

Thermal Properties

Latent Heat of Fusion, J/g 410
170
Maximum Temperature: Mechanical, °C 160
120
Melting Completion (Liquidus), °C 650
900
Melting Onset (Solidus), °C 570
890
Specific Heat Capacity, J/kg-K 900
390
Thermal Conductivity, W/m-K 180
120
Thermal Expansion, µm/m-K 23
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46
26
Electrical Conductivity: Equal Weight (Specific), % IACS 150
29

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
23
Density, g/cm3 2.7
8.0
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1180
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 38
130
Resilience: Unit (Modulus of Resilience), kJ/m3 65 to 540
120
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 50
20
Strength to Weight: Axial, points 14 to 32
14
Strength to Weight: Bending, points 22 to 38
15
Thermal Diffusivity, mm2/s 72
38
Thermal Shock Resistance, points 6.1 to 14
14

Alloy Composition

Aluminum (Al), % 96 to 98.5
0
Copper (Cu), % 0 to 0.1
59 to 63
Iron (Fe), % 0 to 0.5
0 to 0.2
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 0.4 to 0.8
0
Manganese (Mn), % 0.4 to 0.8
0 to 0.2
Nickel (Ni), % 0
0 to 0.2
Silicon (Si), % 0.7 to 1.3
0
Tin (Sn), % 0
0 to 0.2
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.2
35.1 to 41
Residuals, % 0
0 to 0.9