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AS41A Magnesium vs. Nickel 689

AS41A magnesium belongs to the magnesium alloys classification, while nickel 689 belongs to the nickel alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown. 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 689.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
210
Elongation at Break, % 11
23
Fatigue Strength, MPa 100
420
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
80
Shear Strength, MPa 130
790
Tensile Strength: Ultimate (UTS), MPa 230
1250
Tensile Strength: Yield (Proof), MPa 140
690

Thermal Properties

Latent Heat of Fusion, J/g 370
330
Maximum Temperature: Mechanical, °C 110
990
Melting Completion (Liquidus), °C 620
1440
Melting Onset (Solidus), °C 570
1390
Specific Heat Capacity, J/kg-K 1000
450
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
70
Density, g/cm3 1.6
8.5
Embodied Carbon, kg CO2/kg material 23
11
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 980
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
240
Resilience: Unit (Modulus of Resilience), kJ/m3 220
1170
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
23
Strength to Weight: Axial, points 38
41
Strength to Weight: Bending, points 50
30
Thermal Shock Resistance, points 14
35

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0.75 to 1.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0
0.1 to 0.2
Chromium (Cr), % 0
18 to 20
Cobalt (Co), % 0
9.0 to 11
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 0.5
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0 to 0.030
48.3 to 60.9
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0.5 to 1.5
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
2.3 to 2.8
Zinc (Zn), % 0 to 0.12
0