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6351 Aluminum vs. C84200 Brass

6351 aluminum belongs to the aluminum alloys classification, while C84200 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (2, 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 C84200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 7.8 to 18
15
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
40
Tensile Strength: Ultimate (UTS), MPa 140 to 310
250
Tensile Strength: Yield (Proof), MPa 95 to 270
120

Thermal Properties

Latent Heat of Fusion, J/g 410
180
Maximum Temperature: Mechanical, °C 160
150
Melting Completion (Liquidus), °C 650
990
Melting Onset (Solidus), °C 570
840
Specific Heat Capacity, J/kg-K 900
370
Thermal Conductivity, W/m-K 180
72
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46
16
Electrical Conductivity: Equal Weight (Specific), % IACS 150
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
30
Density, g/cm3 2.7
8.5
Embodied Carbon, kg CO2/kg material 8.3
3.1
Embodied Energy, MJ/kg 150
51
Embodied Water, L/kg 1180
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 38
31
Resilience: Unit (Modulus of Resilience), kJ/m3 65 to 540
72
Stiffness to Weight: Axial, points 14
6.9
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 14 to 32
8.2
Strength to Weight: Bending, points 22 to 38
10
Thermal Diffusivity, mm2/s 72
23
Thermal Shock Resistance, points 6.1 to 14
9.1

Alloy Composition

Aluminum (Al), % 96 to 98.5
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 0 to 0.1
78 to 82
Iron (Fe), % 0 to 0.5
0 to 0.4
Lead (Pb), % 0
2.0 to 3.0
Magnesium (Mg), % 0.4 to 0.8
0
Manganese (Mn), % 0.4 to 0.8
0
Nickel (Ni), % 0
0 to 0.8
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0.7 to 1.3
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
4.0 to 6.0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.2
10 to 16
Residuals, % 0
0 to 0.7