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6023 Aluminum vs. AS41B Magnesium

6023 aluminum belongs to the aluminum alloys classification, while AS41B magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 6023 aluminum and the bottom bar is AS41B magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
45
Elongation at Break, % 11
6.0
Fatigue Strength, MPa 120 to 130
97
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 210 to 220
120
Tensile Strength: Ultimate (UTS), MPa 360
210
Tensile Strength: Yield (Proof), MPa 300 to 310
140

Thermal Properties

Latent Heat of Fusion, J/g 400
370
Maximum Temperature: Mechanical, °C 160
110
Melting Completion (Liquidus), °C 640
620
Melting Onset (Solidus), °C 580
570
Specific Heat Capacity, J/kg-K 890
1000
Thermal Conductivity, W/m-K 170
68
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
17
Electrical Conductivity: Equal Weight (Specific), % IACS 140
92

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 2.8
1.7
Embodied Carbon, kg CO2/kg material 8.3
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 39
11
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 690
220
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 49
72
Strength to Weight: Axial, points 35 to 36
35
Strength to Weight: Bending, points 40
47
Thermal Diffusivity, mm2/s 67
41
Thermal Shock Resistance, points 16
13

Alloy Composition

Aluminum (Al), % 94 to 97.7
3.5 to 5.0
Bismuth (Bi), % 0.3 to 0.8
0
Copper (Cu), % 0.2 to 0.5
0 to 0.020
Iron (Fe), % 0 to 0.5
0 to 0.0035
Magnesium (Mg), % 0.4 to 0.9
92.7 to 95.7
Manganese (Mn), % 0.2 to 0.6
0.35 to 0.7
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 0.6 to 1.4
0.5 to 1.5
Tin (Sn), % 0.6 to 1.2
0
Zinc (Zn), % 0
0 to 0.12
Residuals, % 0 to 0.15
0