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AS41A Magnesium vs. Nickel 686

AS41A magnesium belongs to the magnesium alloys classification, while nickel 686 belongs to the nickel alloys. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AS41A magnesium and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
220
Elongation at Break, % 11
51
Fatigue Strength, MPa 100
410
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
77
Shear Strength, MPa 130
560
Tensile Strength: Ultimate (UTS), MPa 230
780
Tensile Strength: Yield (Proof), MPa 140
350

Thermal Properties

Latent Heat of Fusion, J/g 370
320
Maximum Temperature: Mechanical, °C 110
980
Melting Completion (Liquidus), °C 620
1380
Melting Onset (Solidus), °C 570
1340
Specific Heat Capacity, J/kg-K 1000
420
Thermal Conductivity, W/m-K 68
9.8
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 92
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
70
Density, g/cm3 1.6
9.0
Embodied Carbon, kg CO2/kg material 23
12
Embodied Energy, MJ/kg 160
170
Embodied Water, L/kg 980
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
320
Resilience: Unit (Modulus of Resilience), kJ/m3 220
280
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
22
Strength to Weight: Axial, points 38
24
Strength to Weight: Bending, points 50
21
Thermal Diffusivity, mm2/s 41
2.6
Thermal Shock Resistance, points 14
21

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 0 to 0.060
0
Iron (Fe), % 0
0 to 5.0
Magnesium (Mg), % 92.8 to 95.8
0
Manganese (Mn), % 0.2 to 0.5
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 0 to 0.030
49.5 to 63
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.5 to 1.5
0 to 0.080
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4
Zinc (Zn), % 0 to 0.12
0