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5056 Aluminum vs. M1A Magnesium

5056 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 5056 aluminum and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
45
Elongation at Break, % 4.9 to 31
5.5
Fatigue Strength, MPa 140 to 200
88
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
18
Shear Strength, MPa 170 to 240
120
Tensile Strength: Ultimate (UTS), MPa 290 to 460
230
Tensile Strength: Yield (Proof), MPa 150 to 410
130

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 190
95
Melting Completion (Liquidus), °C 640
610
Melting Onset (Solidus), °C 570
580
Specific Heat Capacity, J/kg-K 910
990
Thermal Conductivity, W/m-K 130
150
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
35
Electrical Conductivity: Equal Weight (Specific), % IACS 99
190

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 9.0
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 140
11
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 1220
180
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 51
71
Strength to Weight: Axial, points 30 to 48
38
Strength to Weight: Bending, points 36 to 50
49
Thermal Diffusivity, mm2/s 53
88
Thermal Shock Resistance, points 13 to 20
13

Alloy Composition

Aluminum (Al), % 93 to 95.4
0
Calcium (Ca), % 0
0 to 0.3
Chromium (Cr), % 0.050 to 0.2
0
Copper (Cu), % 0 to 0.1
0 to 0.050
Iron (Fe), % 0 to 0.4
0
Magnesium (Mg), % 4.5 to 5.6
97.2 to 98.8
Manganese (Mn), % 0.050 to 0.2
1.2 to 2.0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.3
0 to 0.1
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0
0 to 0.3