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AZ91B Magnesium vs. Nickel 333

AZ91B magnesium belongs to the magnesium alloys classification, while nickel 333 belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 AZ91B magnesium and the bottom bar is nickel 333.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
210
Elongation at Break, % 5.0
34
Fatigue Strength, MPa 79
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
81
Shear Strength, MPa 140
420
Tensile Strength: Ultimate (UTS), MPa 240
630
Tensile Strength: Yield (Proof), MPa 160
270

Thermal Properties

Latent Heat of Fusion, J/g 360
320
Maximum Temperature: Mechanical, °C 130
1010
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 470
1410
Specific Heat Capacity, J/kg-K 990
450
Thermal Conductivity, W/m-K 73
11
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 58
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
55
Density, g/cm3 1.7
8.5
Embodied Carbon, kg CO2/kg material 22
8.5
Embodied Energy, MJ/kg 160
120
Embodied Water, L/kg 990
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
170
Resilience: Unit (Modulus of Resilience), kJ/m3 280
180
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
23
Strength to Weight: Axial, points 38
21
Strength to Weight: Bending, points 49
19
Thermal Diffusivity, mm2/s 42
2.9
Thermal Shock Resistance, points 14
16

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
24 to 27
Cobalt (Co), % 0
2.5 to 4.0
Copper (Cu), % 0 to 0.35
0
Iron (Fe), % 0
9.3 to 24.5
Magnesium (Mg), % 87.9 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 4.0
Nickel (Ni), % 0 to 0.030
44 to 48
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 1.5
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
2.5 to 4.0
Zinc (Zn), % 0.35 to 1.0
0