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7204 Aluminum vs. ZK61A Magnesium

7204 aluminum belongs to the aluminum alloys classification, while ZK61A magnesium belongs to the magnesium alloys. 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 7204 aluminum and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 11 to 13
5.8 to 7.1
Fatigue Strength, MPa 110 to 130
120 to 140
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 130 to 220
170 to 180
Tensile Strength: Ultimate (UTS), MPa 220 to 380
290 to 310
Tensile Strength: Yield (Proof), MPa 120 to 310
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 380
330
Maximum Temperature: Mechanical, °C 210
120
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 520
530
Specific Heat Capacity, J/kg-K 880
960
Thermal Conductivity, W/m-K 150
120
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
29
Electrical Conductivity: Equal Weight (Specific), % IACS 120
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.9
1.9
Embodied Carbon, kg CO2/kg material 8.4
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1140
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25 to 40
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 710
370 to 420
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
62
Strength to Weight: Axial, points 21 to 36
42 to 45
Strength to Weight: Bending, points 28 to 40
50 to 53
Thermal Diffusivity, mm2/s 58
65
Thermal Shock Resistance, points 9.4 to 16
17 to 18

Alloy Composition

Aluminum (Al), % 90.5 to 94.8
0
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.2
0 to 0.1
Iron (Fe), % 0 to 0.35
0
Magnesium (Mg), % 1.0 to 2.0
92.1 to 93.9
Manganese (Mn), % 0.2 to 0.7
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.3
0
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0 to 0.1
0
Zinc (Zn), % 4.0 to 5.0
5.5 to 6.5
Zirconium (Zr), % 0 to 0.25
0.6 to 1.0
Residuals, % 0
0 to 0.3

Comparable Variants