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Sintered 6061 Aluminum vs. 8079 Aluminum

Both sintered 6061 aluminum and 8079 aluminum are aluminum alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is sintered 6061 aluminum and the bottom bar is 8079 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
69
Elongation at Break, % 0.5 to 6.0
2.2
Fatigue Strength, MPa 32 to 62
56
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 25
26
Tensile Strength: Ultimate (UTS), MPa 83 to 210
150
Tensile Strength: Yield (Proof), MPa 62 to 190
120

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 610
640
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 200
230
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 52
58
Electrical Conductivity: Equal Weight (Specific), % IACS 170
190

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.0
Density, g/cm3 2.7
2.8
Embodied Carbon, kg CO2/kg material 8.3
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 0.68 to 7.0
3.1
Resilience: Unit (Modulus of Resilience), kJ/m3 28 to 280
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
50
Strength to Weight: Axial, points 8.6 to 21
15
Strength to Weight: Bending, points 16 to 29
22
Thermal Diffusivity, mm2/s 81
92
Thermal Shock Resistance, points 3.8 to 9.4
6.4

Alloy Composition

Aluminum (Al), % 96 to 99.4
98.1 to 99.3
Copper (Cu), % 0 to 0.5
0 to 0.050
Iron (Fe), % 0
0.7 to 1.3
Magnesium (Mg), % 0.4 to 1.2
0
Silicon (Si), % 0.2 to 0.8
0.050 to 0.3
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15