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5657 Aluminum vs. M1A Magnesium

5657 aluminum belongs to the aluminum alloys classification, while M1A 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 5657 aluminum and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
45
Elongation at Break, % 6.6 to 15
5.5
Fatigue Strength, MPa 74 to 88
88
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 92 to 110
120
Tensile Strength: Ultimate (UTS), MPa 150 to 200
230
Tensile Strength: Yield (Proof), MPa 140 to 170
130

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 180
95
Melting Completion (Liquidus), °C 660
610
Melting Onset (Solidus), °C 640
580
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 210
150
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 54
35
Electrical Conductivity: Equal Weight (Specific), % IACS 180
190

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 8.4
24
Embodied Energy, MJ/kg 160
160
Embodied Water, L/kg 1200
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.7 to 27
11
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 200
180
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
71
Strength to Weight: Axial, points 15 to 20
38
Strength to Weight: Bending, points 23 to 28
49
Thermal Diffusivity, mm2/s 84
88
Thermal Shock Resistance, points 6.7 to 8.6
13

Alloy Composition

Aluminum (Al), % 98.5 to 99.4
0
Calcium (Ca), % 0
0 to 0.3
Copper (Cu), % 0 to 0.1
0 to 0.050
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.1
0
Magnesium (Mg), % 0.6 to 1.0
97.2 to 98.8
Manganese (Mn), % 0 to 0.030
1.2 to 2.0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.080
0 to 0.1
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.050
0
Residuals, % 0
0 to 0.3