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AZ91B Magnesium vs. N10675 Nickel

AZ91B magnesium belongs to the magnesium alloys classification, while N10675 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 N10675 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
220
Elongation at Break, % 5.0
47
Fatigue Strength, MPa 79
350
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
85
Shear Strength, MPa 140
610
Tensile Strength: Ultimate (UTS), MPa 240
860
Tensile Strength: Yield (Proof), MPa 160
400

Thermal Properties

Latent Heat of Fusion, J/g 360
320
Maximum Temperature: Mechanical, °C 130
910
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 470
1370
Specific Heat Capacity, J/kg-K 990
380
Thermal Conductivity, W/m-K 73
11
Thermal Expansion, µm/m-K 26
11

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
80
Density, g/cm3 1.7
9.3
Embodied Carbon, kg CO2/kg material 22
16
Embodied Energy, MJ/kg 160
210
Embodied Water, L/kg 990
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
330
Resilience: Unit (Modulus of Resilience), kJ/m3 280
350
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
26

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0 to 0.5
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0
1.0 to 3.0
Cobalt (Co), % 0
0 to 3.0
Copper (Cu), % 0 to 0.35
0 to 0.2
Iron (Fe), % 0
1.0 to 3.0
Magnesium (Mg), % 87.9 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0 to 3.0
Molybdenum (Mo), % 0
27 to 32
Nickel (Ni), % 0 to 0.030
51.3 to 71
Niobium (Nb), % 0
0 to 0.2
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.1
Sulfur (S), % 0
0 to 0.010
Tantalum (Ta), % 0
0 to 0.2
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 0
0 to 3.0
Vanadium (V), % 0
0 to 0.2
Zinc (Zn), % 0.35 to 1.0
0 to 0.1