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6063A Aluminum vs. 4145 Aluminum

Both 6063A 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 6063A 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, % 6.7 to 18
2.2
Fatigue Strength, MPa 53 to 80
48
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
28
Shear Strength, MPa 78 to 150
69
Tensile Strength: Ultimate (UTS), MPa 130 to 260
120
Tensile Strength: Yield (Proof), MPa 55 to 200
68

Thermal Properties

Latent Heat of Fusion, J/g 400
540
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 640
590
Melting Onset (Solidus), °C 620
520
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 200
100
Thermal Expansion, µm/m-K 23
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49 to 54
26
Electrical Conductivity: Equal Weight (Specific), % IACS 160 to 180
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 150
140
Embodied Water, L/kg 1190
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 21
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 22 to 280
31
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 13 to 26
12
Strength to Weight: Bending, points 21 to 33
19
Thermal Diffusivity, mm2/s 83
42
Thermal Shock Resistance, points 5.6 to 11
5.5

Alloy Composition

Aluminum (Al), % 97.5 to 99
83 to 87.4
Chromium (Cr), % 0 to 0.050
0 to 0.15
Copper (Cu), % 0 to 0.1
3.3 to 4.7
Iron (Fe), % 0.15 to 0.35
0 to 0.8
Magnesium (Mg), % 0.6 to 0.9
0 to 0.15
Manganese (Mn), % 0 to 0.15
0 to 0.15
Silicon (Si), % 0.3 to 0.6
9.3 to 10.7
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.15
0 to 0.2
Residuals, % 0
0 to 0.15