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771.0 Aluminum vs. 4045 Aluminum

Both 771.0 aluminum and 4045 aluminum are aluminum alloys. They have 90% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is 771.0 aluminum and the bottom bar is 4045 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
71
Elongation at Break, % 1.7 to 6.5
2.3
Fatigue Strength, MPa 92 to 180
45
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
27
Tensile Strength: Ultimate (UTS), MPa 250 to 370
120
Tensile Strength: Yield (Proof), MPa 210 to 350
64

Thermal Properties

Latent Heat of Fusion, J/g 380
540
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 630
600
Melting Onset (Solidus), °C 620
580
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 140 to 150
170
Thermal Expansion, µm/m-K 24
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
45
Electrical Conductivity: Equal Weight (Specific), % IACS 82
160

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 3.0
2.6
Embodied Carbon, kg CO2/kg material 8.0
7.8
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4 to 20
2.4
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 900
29
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 46
54
Strength to Weight: Axial, points 23 to 35
13
Strength to Weight: Bending, points 29 to 39
21
Thermal Diffusivity, mm2/s 54 to 58
74
Thermal Shock Resistance, points 11 to 16
5.7

Alloy Composition

Aluminum (Al), % 90.5 to 92.5
87.4 to 91
Chromium (Cr), % 0.060 to 0.2
0
Copper (Cu), % 0 to 0.1
0 to 0.3
Iron (Fe), % 0 to 0.15
0 to 0.8
Magnesium (Mg), % 0.8 to 1.0
0 to 0.050
Manganese (Mn), % 0 to 0.1
0 to 0.050
Silicon (Si), % 0 to 0.15
9.0 to 11
Titanium (Ti), % 0.1 to 0.2
0 to 0.2
Zinc (Zn), % 6.5 to 7.5
0 to 0.1
Residuals, % 0
0 to 0.15