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AZ91B Magnesium vs. N06455 Nickel

AZ91B magnesium belongs to the magnesium alloys classification, while N06455 nickel belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 N06455 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
210
Elongation at Break, % 5.0
47
Fatigue Strength, MPa 79
290
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
82
Shear Strength, MPa 140
550
Tensile Strength: Ultimate (UTS), MPa 240
780
Tensile Strength: Yield (Proof), MPa 160
330

Thermal Properties

Latent Heat of Fusion, J/g 360
320
Maximum Temperature: Mechanical, °C 130
960
Melting Completion (Liquidus), °C 600
1510
Melting Onset (Solidus), °C 470
1450
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 11
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 58
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
65
Density, g/cm3 1.7
8.8
Embodied Carbon, kg CO2/kg material 22
12
Embodied Energy, MJ/kg 160
160
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
260
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
23
Strength to Weight: Axial, points 38
24
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
14 to 18
Cobalt (Co), % 0
0 to 2.0
Copper (Cu), % 0 to 0.35
0
Iron (Fe), % 0
0 to 3.0
Magnesium (Mg), % 87.9 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
14 to 17
Nickel (Ni), % 0 to 0.030
58.1 to 72
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.080
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0 to 0.7
Zinc (Zn), % 0.35 to 1.0
0