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204.0 Aluminum vs. ZK51A Magnesium

204.0 aluminum belongs to the aluminum alloys classification, while ZK51A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 204.0 aluminum and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
45
Elongation at Break, % 5.7 to 7.8
4.7
Fatigue Strength, MPa 63 to 77
62
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
18
Tensile Strength: Ultimate (UTS), MPa 230 to 340
240
Tensile Strength: Yield (Proof), MPa 180 to 220
150

Thermal Properties

Latent Heat of Fusion, J/g 390
340
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 580
550
Solidification (Pattern Maker's) Shrinkage, % 1.3
1.3
Specific Heat Capacity, J/kg-K 880
970
Thermal Conductivity, W/m-K 120
110
Thermal Expansion, µm/m-K 19
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29 to 34
28
Electrical Conductivity: Equal Weight (Specific), % IACS 87 to 100
140

Otherwise Unclassified Properties

Base Metal Price, % relative 11
13
Density, g/cm3 3.0
1.8
Embodied Carbon, kg CO2/kg material 8.0
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1150
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 23
10
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 350
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
64
Strength to Weight: Axial, points 21 to 31
36
Strength to Weight: Bending, points 28 to 36
47
Thermal Diffusivity, mm2/s 46
61
Thermal Shock Resistance, points 12 to 18
15

Alloy Composition

Aluminum (Al), % 93.4 to 95.5
0
Copper (Cu), % 4.2 to 5.0
0 to 0.1
Iron (Fe), % 0 to 0.35
0
Magnesium (Mg), % 0.15 to 0.35
93.1 to 95.9
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.050
0 to 0.010
Silicon (Si), % 0 to 0.2
0
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0.15 to 0.3
0
Zinc (Zn), % 0 to 0.1
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3