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1070 Aluminum vs. 4145 Aluminum

Both 1070 aluminum and 4145 aluminum are aluminum alloys. They have 86% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 1070 aluminum and the bottom bar is 4145 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
73
Elongation at Break, % 4.5 to 39
2.2
Fatigue Strength, MPa 22 to 49
48
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
28
Shear Strength, MPa 48 to 79
69
Tensile Strength: Ultimate (UTS), MPa 73 to 140
120
Tensile Strength: Yield (Proof), MPa 17 to 120
68

Thermal Properties

Latent Heat of Fusion, J/g 400
540
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 640
590
Melting Onset (Solidus), °C 640
520
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 230
100
Thermal Expansion, µm/m-K 23
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 61
26
Electrical Conductivity: Equal Weight (Specific), % IACS 200
84

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
2.8
Embodied Carbon, kg CO2/kg material 8.3
7.6
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 1200
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.8 to 21
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 2.1 to 110
31
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 7.5 to 14
12
Strength to Weight: Bending, points 14 to 22
19
Thermal Diffusivity, mm2/s 94
42
Thermal Shock Resistance, points 3.3 to 6.1
5.5

Alloy Composition

Aluminum (Al), % 99.7 to 100
83 to 87.4
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 0 to 0.040
3.3 to 4.7
Iron (Fe), % 0 to 0.25
0 to 0.8
Magnesium (Mg), % 0 to 0.030
0 to 0.15
Manganese (Mn), % 0 to 0.030
0 to 0.15
Silicon (Si), % 0 to 0.2
9.3 to 10.7
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.040
0 to 0.2
Residuals, % 0
0 to 0.15