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AZ91A Magnesium vs. Nickel 242

AZ91A magnesium belongs to the magnesium alloys classification, while nickel 242 belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 AZ91A magnesium and the bottom bar is nickel 242.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
220
Elongation at Break, % 5.0
45
Fatigue Strength, MPa 99
300
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 18
84
Shear Strength, MPa 140
570
Tensile Strength: Ultimate (UTS), MPa 240
820
Tensile Strength: Yield (Proof), MPa 160
350

Thermal Properties

Latent Heat of Fusion, J/g 360
330
Maximum Temperature: Mechanical, °C 130
930
Melting Completion (Liquidus), °C 600
1380
Melting Onset (Solidus), °C 470
1290
Specific Heat Capacity, J/kg-K 990
400
Thermal Conductivity, W/m-K 73
11
Thermal Expansion, µm/m-K 26
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 52
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
75
Density, g/cm3 1.7
9.0
Embodied Carbon, kg CO2/kg material 22
14
Embodied Energy, MJ/kg 160
180
Embodied Water, L/kg 990
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
300
Resilience: Unit (Modulus of Resilience), kJ/m3 280
280
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
22
Strength to Weight: Axial, points 38
25
Strength to Weight: Bending, points 49
21
Thermal Diffusivity, mm2/s 42
3.1
Thermal Shock Resistance, points 14
25

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0 to 0.5
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
7.0 to 9.0
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0 to 0.1
0 to 0.5
Iron (Fe), % 0
0 to 2.0
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0 to 0.8
Molybdenum (Mo), % 0
24 to 26
Nickel (Ni), % 0 to 0.030
59.3 to 69
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.8
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0.35 to 1.0
0