MakeItFrom.com
Menu (ESC)

7003 Aluminum vs. ZK40A Magnesium

7003 aluminum belongs to the aluminum alloys classification, while ZK40A magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 7003 aluminum and the bottom bar is ZK40A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
45
Elongation at Break, % 11
4.2
Fatigue Strength, MPa 130 to 150
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 210 to 230
160
Tensile Strength: Ultimate (UTS), MPa 350 to 390
280
Tensile Strength: Yield (Proof), MPa 300 to 310
260

Thermal Properties

Latent Heat of Fusion, J/g 380
340
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 630
600
Melting Onset (Solidus), °C 510
540
Specific Heat Capacity, J/kg-K 870
970
Thermal Conductivity, W/m-K 150
110
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
27
Electrical Conductivity: Equal Weight (Specific), % IACS 110
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.9
1.8
Embodied Carbon, kg CO2/kg material 8.1
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1140
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 41
12
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 710
740
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
65
Strength to Weight: Axial, points 33 to 37
43
Strength to Weight: Bending, points 37 to 40
53
Thermal Diffusivity, mm2/s 59
62
Thermal Shock Resistance, points 15 to 17
17

Alloy Composition

Aluminum (Al), % 90.6 to 94.5
0
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.35
0
Magnesium (Mg), % 0.5 to 1.0
94.2 to 96.1
Manganese (Mn), % 0 to 0.3
0
Silicon (Si), % 0 to 0.3
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.0 to 6.5
3.5 to 4.5
Zirconium (Zr), % 0.050 to 0.25
0.45 to 1.0
Residuals, % 0
0 to 0.3