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AS41B Magnesium vs. 238.0 Aluminum

AS41B magnesium belongs to the magnesium alloys classification, while 238.0 aluminum belongs to the aluminum alloys. There are 29 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 AS41B magnesium and the bottom bar is 238.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
76
Elongation at Break, % 6.0
1.5
Fatigue Strength, MPa 97
110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
28
Tensile Strength: Ultimate (UTS), MPa 210
210
Tensile Strength: Yield (Proof), MPa 140
170

Thermal Properties

Latent Heat of Fusion, J/g 370
430
Maximum Temperature: Mechanical, °C 110
170
Melting Completion (Liquidus), °C 620
600
Melting Onset (Solidus), °C 570
510
Specific Heat Capacity, J/kg-K 1000
840
Thermal Conductivity, W/m-K 68
100
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
25
Electrical Conductivity: Equal Weight (Specific), % IACS 92
67

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 1.7
3.4
Embodied Carbon, kg CO2/kg material 23
7.4
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 980
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
2.9
Resilience: Unit (Modulus of Resilience), kJ/m3 220
180
Stiffness to Weight: Axial, points 15
12
Stiffness to Weight: Bending, points 72
42
Strength to Weight: Axial, points 35
17
Strength to Weight: Bending, points 47
23
Thermal Diffusivity, mm2/s 41
37
Thermal Shock Resistance, points 13
9.1

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
81.9 to 84.9
Copper (Cu), % 0 to 0.020
9.5 to 10.5
Iron (Fe), % 0 to 0.0035
1.0 to 1.5
Magnesium (Mg), % 92.7 to 95.7
0 to 0.25
Manganese (Mn), % 0.35 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0.5 to 1.5
3.6 to 4.4
Zinc (Zn), % 0 to 0.12
1.0 to 1.5