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7050 Aluminum vs. 6070 Aluminum

Both 7050 aluminum and 6070 aluminum are aluminum alloys. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is 7050 aluminum and the bottom bar is 6070 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
70
Elongation at Break, % 2.2 to 12
5.6 to 8.6
Fatigue Strength, MPa 130 to 210
95 to 130
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 280 to 330
220 to 240
Tensile Strength: Ultimate (UTS), MPa 490 to 570
370 to 380
Tensile Strength: Yield (Proof), MPa 390 to 500
350

Thermal Properties

Latent Heat of Fusion, J/g 370
410
Maximum Temperature: Mechanical, °C 190
160
Melting Completion (Liquidus), °C 630
650
Melting Onset (Solidus), °C 490
570
Specific Heat Capacity, J/kg-K 860
900
Thermal Conductivity, W/m-K 140
160
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
41
Electrical Conductivity: Equal Weight (Specific), % IACS 100
140

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 3.1
2.7
Embodied Carbon, kg CO2/kg material 8.2
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1120
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 10 to 55
20 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 1110 to 1760
880 to 900
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
50
Strength to Weight: Axial, points 45 to 51
38
Strength to Weight: Bending, points 45 to 50
42 to 43
Thermal Diffusivity, mm2/s 54
65
Thermal Shock Resistance, points 21 to 25
16 to 17

Alloy Composition

Aluminum (Al), % 87.3 to 92.1
94.6 to 98
Chromium (Cr), % 0 to 0.040
0 to 0.1
Copper (Cu), % 2.0 to 2.6
0.15 to 0.4
Iron (Fe), % 0 to 0.15
0 to 0.5
Magnesium (Mg), % 1.9 to 2.6
0.5 to 1.2
Manganese (Mn), % 0 to 0.1
0.4 to 1.0
Silicon (Si), % 0 to 0.12
1.0 to 1.7
Titanium (Ti), % 0 to 0.060
0 to 0.15
Zinc (Zn), % 5.7 to 6.7
0 to 0.25
Zirconium (Zr), % 0.080 to 0.15
0
Residuals, % 0
0 to 0.15