MakeItFrom.com
Menu (ESC)

2025 Aluminum vs. ZK40A Magnesium

2025 aluminum belongs to the aluminum alloys classification, while ZK40A 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 2025 aluminum and the bottom bar is ZK40A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
45
Elongation at Break, % 15
4.2
Fatigue Strength, MPa 130
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Shear Strength, MPa 240
160
Tensile Strength: Ultimate (UTS), MPa 400
280
Tensile Strength: Yield (Proof), MPa 260
260

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 190
120
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 520
540
Specific Heat Capacity, J/kg-K 870
970
Thermal Conductivity, W/m-K 150
110
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
27
Electrical Conductivity: Equal Weight (Specific), % IACS 120
130

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 3.0
1.8
Embodied Carbon, kg CO2/kg material 7.9
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1130
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 55
12
Resilience: Unit (Modulus of Resilience), kJ/m3 450
740
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
65
Strength to Weight: Axial, points 37
43
Strength to Weight: Bending, points 40
53
Thermal Diffusivity, mm2/s 58
62
Thermal Shock Resistance, points 18
17

Alloy Composition

Aluminum (Al), % 90.9 to 95.2
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.9 to 5.0
0
Iron (Fe), % 0 to 1.0
0
Magnesium (Mg), % 0 to 0.050
94.2 to 96.1
Manganese (Mn), % 0.4 to 1.2
0
Silicon (Si), % 0.5 to 1.2
0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
3.5 to 4.5
Zirconium (Zr), % 0
0.45 to 1.0
Residuals, % 0
0 to 0.3