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6151 Aluminum vs. ZK60A Magnesium

6151 aluminum belongs to the aluminum alloys classification, while ZK60A magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 6151 aluminum and the bottom bar is ZK60A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
46
Elongation at Break, % 1.1 to 5.7
4.5 to 9.9
Fatigue Strength, MPa 80 to 100
150 to 180
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 190 to 200
170 to 190
Tensile Strength: Ultimate (UTS), MPa 330 to 340
320 to 330
Tensile Strength: Yield (Proof), MPa 270 to 280
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 410
330
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 590
550
Specific Heat Capacity, J/kg-K 900
960
Thermal Conductivity, W/m-K 170
120
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
29 to 30
Electrical Conductivity: Equal Weight (Specific), % IACS 150
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.7
1.9
Embodied Carbon, kg CO2/kg material 8.2
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.5 to 18
14 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 580
570 to 690
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
63
Strength to Weight: Axial, points 34
47 to 49
Strength to Weight: Bending, points 39
55 to 56
Thermal Diffusivity, mm2/s 70
66
Thermal Shock Resistance, points 15
19 to 20

Alloy Composition

Aluminum (Al), % 95.6 to 98.8
0
Chromium (Cr), % 0.15 to 0.35
0
Copper (Cu), % 0 to 0.35
0
Iron (Fe), % 0 to 1.0
0
Magnesium (Mg), % 0.45 to 0.8
92.5 to 94.8
Manganese (Mn), % 0 to 0.2
0
Silicon (Si), % 0.6 to 1.2
0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
4.8 to 6.2
Zirconium (Zr), % 0
0.45 to 1.0
Residuals, % 0
0 to 0.3

Comparable Variants