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AZ91A Magnesium vs. 3003 Aluminum

AZ91A magnesium belongs to the magnesium alloys classification, while 3003 aluminum belongs to the aluminum 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 AZ91A magnesium and the bottom bar is 3003 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
28 to 65
Elastic (Young's, Tensile) Modulus, GPa 46
70
Elongation at Break, % 5.0
1.1 to 28
Fatigue Strength, MPa 99
39 to 90
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
26
Shear Strength, MPa 140
68 to 130
Tensile Strength: Ultimate (UTS), MPa 240
110 to 240
Tensile Strength: Yield (Proof), MPa 160
40 to 210

Thermal Properties

Latent Heat of Fusion, J/g 360
400
Maximum Temperature: Mechanical, °C 130
180
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 470
640
Specific Heat Capacity, J/kg-K 990
900
Thermal Conductivity, W/m-K 73
180
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
44
Electrical Conductivity: Equal Weight (Specific), % IACS 52
140

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
2.8
Embodied Carbon, kg CO2/kg material 22
8.1
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
0.95 to 63
Resilience: Unit (Modulus of Resilience), kJ/m3 280
11 to 300
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
50
Strength to Weight: Axial, points 38
11 to 24
Strength to Weight: Bending, points 49
18 to 30
Thermal Diffusivity, mm2/s 42
71
Thermal Shock Resistance, points 14
4.7 to 10

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
96.8 to 99
Copper (Cu), % 0 to 0.1
0.050 to 0.2
Iron (Fe), % 0
0 to 0.7
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
1.0 to 1.5
Nickel (Ni), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0 to 0.6
Zinc (Zn), % 0.35 to 1.0
0 to 0.1
Residuals, % 0
0 to 0.15