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7175 Aluminum vs. AZ92A Magnesium

7175 aluminum belongs to the aluminum alloys classification, while AZ92A 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 7175 aluminum and the bottom bar is AZ92A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
47
Elongation at Break, % 3.8 to 5.9
2.1 to 6.8
Fatigue Strength, MPa 150 to 180
76 to 90
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 290 to 330
97 to 160
Tensile Strength: Ultimate (UTS), MPa 520 to 570
170 to 270
Tensile Strength: Yield (Proof), MPa 430 to 490
83 to 140

Thermal Properties

Latent Heat of Fusion, J/g 380
350
Maximum Temperature: Mechanical, °C 180
130
Melting Completion (Liquidus), °C 640
590
Melting Onset (Solidus), °C 480
440
Specific Heat Capacity, J/kg-K 870
980
Thermal Conductivity, W/m-K 140
44 to 58
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
11 to 12
Electrical Conductivity: Equal Weight (Specific), % IACS 99
53 to 62

Otherwise Unclassified Properties

Base Metal Price, % relative 10
12
Density, g/cm3 3.0
1.8
Embodied Carbon, kg CO2/kg material 8.2
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1130
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 29
4.0 to 14
Resilience: Unit (Modulus of Resilience), kJ/m3 1310 to 1730
73 to 220
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
67
Strength to Weight: Axial, points 48 to 52
26 to 41
Strength to Weight: Bending, points 48 to 51
38 to 51
Thermal Diffusivity, mm2/s 53
25 to 33
Thermal Shock Resistance, points 23 to 25
10 to 16

Alloy Composition

Aluminum (Al), % 88 to 91.4
8.3 to 9.7
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
0 to 0.25
Iron (Fe), % 0 to 0.2
0
Magnesium (Mg), % 2.1 to 2.9
86.7 to 90
Manganese (Mn), % 0 to 0.1
0.1 to 0.35
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.15
0 to 0.3
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 5.1 to 6.1
1.6 to 2.4
Residuals, % 0
0 to 0.3