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771.0-T71 Aluminum vs. A206.0-T71 Aluminum

Both 771.0-T71 aluminum and A206.0-T71 aluminum are aluminum alloys. Both are furnished in the T71 temper. They have a moderately high 92% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 771.0-T71 aluminum and the bottom bar is A206.0-T71 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
110
Elastic (Young's, Tensile) Modulus, GPa 70
70
Elongation at Break, % 2.2
4.2
Fatigue Strength, MPa 120
180
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
26
Tensile Strength: Ultimate (UTS), MPa 370
420
Tensile Strength: Yield (Proof), MPa 350
340

Thermal Properties

Latent Heat of Fusion, J/g 380
390
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 630
670
Melting Onset (Solidus), °C 620
550
Specific Heat Capacity, J/kg-K 870
880
Thermal Conductivity, W/m-K 140
130
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
30
Electrical Conductivity: Equal Weight (Specific), % IACS 82
90

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 3.0
3.0
Embodied Carbon, kg CO2/kg material 8.0
8.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.2
16
Resilience: Unit (Modulus of Resilience), kJ/m3 900
830
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
46
Strength to Weight: Axial, points 35
38
Strength to Weight: Bending, points 39
41
Thermal Diffusivity, mm2/s 54
48
Thermal Shock Resistance, points 16
18

Alloy Composition

Aluminum (Al), % 90.5 to 92.5
93.9 to 95.7
Chromium (Cr), % 0.060 to 0.2
0
Copper (Cu), % 0 to 0.1
4.2 to 5.0
Iron (Fe), % 0 to 0.15
0 to 0.1
Magnesium (Mg), % 0.8 to 1.0
0 to 0.15
Manganese (Mn), % 0 to 0.1
0 to 0.2
Nickel (Ni), % 0
0 to 0.050
Silicon (Si), % 0 to 0.15
0 to 0.050
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0.1 to 0.2
0.15 to 0.3
Zinc (Zn), % 6.5 to 7.5
0 to 0.1
Residuals, % 0
0 to 0.15