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AZ91B Magnesium vs. Grade M30C Nickel

AZ91B magnesium belongs to the magnesium alloys classification, while grade M30C 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 AZ91B magnesium and the bottom bar is grade M30C nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
160
Elongation at Break, % 5.0
29
Fatigue Strength, MPa 79
170
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
61
Tensile Strength: Ultimate (UTS), MPa 240
510
Tensile Strength: Yield (Proof), MPa 160
250

Thermal Properties

Latent Heat of Fusion, J/g 360
290
Maximum Temperature: Mechanical, °C 130
900
Melting Completion (Liquidus), °C 600
1290
Melting Onset (Solidus), °C 470
1240
Specific Heat Capacity, J/kg-K 990
430
Thermal Conductivity, W/m-K 73
22
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 58
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
60
Density, g/cm3 1.7
8.8
Embodied Carbon, kg CO2/kg material 22
9.5
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 990
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
120
Resilience: Unit (Modulus of Resilience), kJ/m3 280
200
Stiffness to Weight: Axial, points 15
10
Stiffness to Weight: Bending, points 69
21
Strength to Weight: Axial, points 38
16
Strength to Weight: Bending, points 49
16
Thermal Diffusivity, mm2/s 42
5.7
Thermal Shock Resistance, points 14
18

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0 to 0.3
Copper (Cu), % 0 to 0.35
26 to 33
Iron (Fe), % 0
0 to 3.5
Magnesium (Mg), % 87.9 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0 to 1.5
Nickel (Ni), % 0 to 0.030
56.6 to 72
Niobium (Nb), % 0
1.0 to 3.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
1.0 to 2.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0.35 to 1.0
0