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AZ91A Magnesium vs. Nickel 22

AZ91A magnesium belongs to the magnesium alloys classification, while nickel 22 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 22.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
220
Elongation at Break, % 5.0
49
Fatigue Strength, MPa 99
330
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
84
Shear Strength, MPa 140
560
Tensile Strength: Ultimate (UTS), MPa 240
790
Tensile Strength: Yield (Proof), MPa 160
360

Thermal Properties

Latent Heat of Fusion, J/g 360
320
Maximum Temperature: Mechanical, °C 130
990
Melting Completion (Liquidus), °C 600
1390
Melting Onset (Solidus), °C 470
1360
Specific Heat Capacity, J/kg-K 990
430
Thermal Conductivity, W/m-K 73
10
Thermal Expansion, µm/m-K 26
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 52
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
70
Density, g/cm3 1.7
8.9
Embodied Carbon, kg CO2/kg material 22
12
Embodied Energy, MJ/kg 160
170
Embodied Water, L/kg 990
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
320
Resilience: Unit (Modulus of Resilience), kJ/m3 280
300
Stiffness to Weight: Axial, points 15
14
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
2.7
Thermal Shock Resistance, points 14
24

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0 to 0.015
Chromium (Cr), % 0
20 to 22.5
Cobalt (Co), % 0
0 to 2.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0
2.0 to 6.0
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0 to 0.015
Molybdenum (Mo), % 0
12.5 to 14.5
Nickel (Ni), % 0 to 0.030
50.8 to 63
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.080
Sulfur (S), % 0
0 to 0.020
Tungsten (W), % 0
2.5 to 3.5
Vanadium (V), % 0
0 to 0.35
Zinc (Zn), % 0.35 to 1.0
0