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AZ91A Magnesium vs. Grade CX2MW Nickel

AZ91A magnesium belongs to the magnesium alloys classification, while grade CX2MW nickel belongs to the nickel alloys. There are 29 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 AZ91A magnesium and the bottom bar is grade CX2MW nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
220
Elongation at Break, % 5.0
34
Fatigue Strength, MPa 99
260
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
84
Tensile Strength: Ultimate (UTS), MPa 240
620
Tensile Strength: Yield (Proof), MPa 160
350

Thermal Properties

Latent Heat of Fusion, J/g 360
330
Maximum Temperature: Mechanical, °C 130
980
Melting Completion (Liquidus), °C 600
1550
Melting Onset (Solidus), °C 470
1490
Specific Heat Capacity, J/kg-K 990
430
Thermal Conductivity, W/m-K 73
10
Thermal Expansion, µm/m-K 26
12

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
65
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
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
180
Resilience: Unit (Modulus of Resilience), kJ/m3 280
290
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
23
Strength to Weight: Axial, points 38
19
Strength to Weight: Bending, points 49
18
Thermal Diffusivity, mm2/s 42
2.7
Thermal Shock Resistance, points 14
17

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
20 to 22.5
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 1.0
Molybdenum (Mo), % 0
12.5 to 14.5
Nickel (Ni), % 0 to 0.030
51.3 to 63
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.8
Sulfur (S), % 0
0 to 0.025
Tungsten (W), % 0
2.5 to 3.5
Vanadium (V), % 0
0 to 0.35
Zinc (Zn), % 0.35 to 1.0
0