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5042 Aluminum vs. ISO-WD32350 Magnesium

5042 aluminum belongs to the aluminum alloys classification, while ISO-WD32350 magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 5042 aluminum and the bottom bar is ISO-WD32350 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
45
Elongation at Break, % 1.1 to 3.4
5.7 to 10
Fatigue Strength, MPa 97 to 120
120 to 130
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 200
150 to 170
Tensile Strength: Ultimate (UTS), MPa 340 to 360
250 to 290
Tensile Strength: Yield (Proof), MPa 270 to 310
140 to 180

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 180
95
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 570
560
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 130
130
Thermal Expansion, µm/m-K 24
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
25
Electrical Conductivity: Equal Weight (Specific), % IACS 110
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 8.8
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
960

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.6 to 12
14 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 550 to 720
210 to 380
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
68
Strength to Weight: Axial, points 35 to 37
39 to 46
Strength to Weight: Bending, points 40 to 42
50 to 55
Thermal Diffusivity, mm2/s 53
73
Thermal Shock Resistance, points 15 to 16
16 to 18

Alloy Composition

Aluminum (Al), % 94.2 to 96.8
0 to 0.1
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.15
0 to 0.1
Iron (Fe), % 0 to 0.35
0 to 0.060
Magnesium (Mg), % 3.0 to 4.0
95.7 to 97.7
Manganese (Mn), % 0.2 to 0.5
0.6 to 1.3
Nickel (Ni), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.2
0 to 0.1
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
1.8 to 2.3
Residuals, % 0
0 to 0.3