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3104 Aluminum vs. M1A Magnesium

3104 aluminum belongs to the aluminum alloys classification, while M1A magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 3104 aluminum and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
45
Elongation at Break, % 1.1 to 20
5.5
Fatigue Strength, MPa 74 to 130
88
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 110 to 180
120
Tensile Strength: Ultimate (UTS), MPa 170 to 310
230
Tensile Strength: Yield (Proof), MPa 68 to 270
130

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 180
95
Melting Completion (Liquidus), °C 650
610
Melting Onset (Solidus), °C 600
580
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 160
150
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
35
Electrical Conductivity: Equal Weight (Specific), % IACS 130
190

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.8
1.7
Embodied Carbon, kg CO2/kg material 8.4
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.6 to 60
11
Resilience: Unit (Modulus of Resilience), kJ/m3 34 to 540
180
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
71
Strength to Weight: Axial, points 17 to 31
38
Strength to Weight: Bending, points 25 to 37
49
Thermal Diffusivity, mm2/s 64
88
Thermal Shock Resistance, points 7.6 to 13
13

Alloy Composition

Aluminum (Al), % 95.1 to 98.4
0
Calcium (Ca), % 0
0 to 0.3
Copper (Cu), % 0.050 to 0.25
0 to 0.050
Gallium (Ga), % 0 to 0.050
0
Iron (Fe), % 0 to 0.8
0
Magnesium (Mg), % 0.8 to 1.3
97.2 to 98.8
Manganese (Mn), % 0.8 to 1.4
1.2 to 2.0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.6
0 to 0.1
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0
0 to 0.3