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7475 Aluminum vs. ISO-WD32260 Magnesium

7475 aluminum belongs to the aluminum alloys classification, while ISO-WD32260 magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 7475 aluminum and the bottom bar is ISO-WD32260 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 10 to 12
4.5 to 6.0
Fatigue Strength, MPa 190 to 210
150 to 190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 320 to 350
190 to 200
Tensile Strength: Ultimate (UTS), MPa 530 to 590
330 to 340
Tensile Strength: Yield (Proof), MPa 440 to 520
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 380
330
Maximum Temperature: Mechanical, °C 180
120
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 480
520
Specific Heat Capacity, J/kg-K 870
970
Thermal Conductivity, W/m-K 140 to 160
110
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33 to 42
28
Electrical Conductivity: Equal Weight (Specific), % IACS 98 to 120
140

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 3.0
1.9
Embodied Carbon, kg CO2/kg material 8.2
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1130
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 53 to 68
14 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 1390 to 1920
560 to 700
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
63
Strength to Weight: Axial, points 49 to 55
48 to 51
Strength to Weight: Bending, points 48 to 52
56 to 58
Thermal Diffusivity, mm2/s 53 to 63
63
Thermal Shock Resistance, points 23 to 26
19 to 20

Alloy Composition

Aluminum (Al), % 88.6 to 91.6
0
Chromium (Cr), % 0.18 to 0.25
0
Copper (Cu), % 1.2 to 1.9
0
Iron (Fe), % 0 to 0.12
0
Magnesium (Mg), % 1.9 to 2.6
92.7 to 94.8
Manganese (Mn), % 0 to 0.060
0
Silicon (Si), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.060
0
Zinc (Zn), % 5.1 to 6.2
4.8 to 6.2
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3

Comparable Variants