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705.0 Aluminum vs. ZE41A Magnesium

705.0 aluminum belongs to the aluminum alloys classification, while ZE41A magnesium belongs to the magnesium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 705.0 aluminum and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 62 to 65
63
Elastic (Young's, Tensile) Modulus, GPa 69
45
Elongation at Break, % 8.4 to 10
3.3
Fatigue Strength, MPa 63 to 98
98
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Tensile Strength: Ultimate (UTS), MPa 240 to 260
210
Tensile Strength: Yield (Proof), MPa 130
140

Thermal Properties

Latent Heat of Fusion, J/g 390
330
Maximum Temperature: Mechanical, °C 180
150
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 610
540
Solidification (Pattern Maker's) Shrinkage, % 1.6
1.3
Specific Heat Capacity, J/kg-K 890
970
Thermal Conductivity, W/m-K 140
110
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
27
Electrical Conductivity: Equal Weight (Specific), % IACS 110
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
18
Density, g/cm3 2.8
1.9
Embodied Carbon, kg CO2/kg material 8.4
24
Embodied Energy, MJ/kg 150
170
Embodied Water, L/kg 1170
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 20
6.1
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 130
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
63
Strength to Weight: Axial, points 24 to 26
31
Strength to Weight: Bending, points 31 to 32
41
Thermal Diffusivity, mm2/s 55
59
Thermal Shock Resistance, points 11
12

Alloy Composition

Aluminum (Al), % 92.3 to 98.6
0
Chromium (Cr), % 0 to 0.4
0
Copper (Cu), % 0 to 0.2
0 to 0.1
Iron (Fe), % 0 to 0.8
0
Magnesium (Mg), % 1.4 to 1.8
91.7 to 95.4
Manganese (Mn), % 0 to 0.6
0 to 0.15
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.2
0
Titanium (Ti), % 0 to 0.25
0
Unspecified Rare Earths, % 0
0.75 to 1.8
Zinc (Zn), % 0 to 3.3
3.5 to 5.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3