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AZ91B Magnesium vs. N10665 Nickel

AZ91B magnesium belongs to the magnesium alloys classification, while N10665 nickel 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 N10665 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
220
Elongation at Break, % 5.0
45
Fatigue Strength, MPa 79
340
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
84
Shear Strength, MPa 140
600
Tensile Strength: Ultimate (UTS), MPa 240
860
Tensile Strength: Yield (Proof), MPa 160
400

Thermal Properties

Latent Heat of Fusion, J/g 360
310
Maximum Temperature: Mechanical, °C 130
900
Melting Completion (Liquidus), °C 600
1620
Melting Onset (Solidus), °C 470
1570
Specific Heat Capacity, J/kg-K 990
390
Thermal Conductivity, W/m-K 73
11
Thermal Expansion, µm/m-K 26
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 58
1.2

Otherwise Unclassified Properties

Base Metal Price, % relative 12
75
Density, g/cm3 1.7
9.3
Embodied Carbon, kg CO2/kg material 22
15
Embodied Energy, MJ/kg 160
200
Embodied Water, L/kg 990
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
320
Resilience: Unit (Modulus of Resilience), kJ/m3 280
360
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
22
Strength to Weight: Axial, points 38
26
Strength to Weight: Bending, points 49
22
Thermal Diffusivity, mm2/s 42
3.1
Thermal Shock Resistance, points 14
27

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
0 to 1.0
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0 to 0.35
0
Iron (Fe), % 0
0 to 2.0
Magnesium (Mg), % 87.9 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
26 to 30
Nickel (Ni), % 0 to 0.030
64.8 to 74
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.1
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0.35 to 1.0
0