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AZ91D Magnesium vs. Grade M30H Nickel

AZ91D magnesium belongs to the magnesium alloys classification, while grade M30H nickel belongs to the nickel alloys. There are 29 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 AZ91D magnesium and the bottom bar is grade M30H nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
160
Elongation at Break, % 2.3 to 4.5
11
Fatigue Strength, MPa 74 to 85
230
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
61
Tensile Strength: Ultimate (UTS), MPa 160 to 220
770
Tensile Strength: Yield (Proof), MPa 80 to 130
470

Thermal Properties

Latent Heat of Fusion, J/g 350
320
Maximum Temperature: Mechanical, °C 130
900
Melting Completion (Liquidus), °C 600
1250
Melting Onset (Solidus), °C 490
1200
Specific Heat Capacity, J/kg-K 990
440
Thermal Conductivity, W/m-K 78
22
Thermal Expansion, µm/m-K 27
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
50
Density, g/cm3 1.7
8.6
Embodied Carbon, kg CO2/kg material 22
7.7
Embodied Energy, MJ/kg 160
110
Embodied Water, L/kg 990
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.2 to 7.7
75
Resilience: Unit (Modulus of Resilience), kJ/m3 69 to 170
700
Stiffness to Weight: Axial, points 15
10
Stiffness to Weight: Bending, points 69
21
Strength to Weight: Axial, points 26 to 34
25
Strength to Weight: Bending, points 38 to 46
22
Thermal Diffusivity, mm2/s 45
5.7
Thermal Shock Resistance, points 9.5 to 13
27

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0 to 0.3
Copper (Cu), % 0 to 0.030
27 to 33
Iron (Fe), % 0 to 0.0050
0 to 3.5
Magnesium (Mg), % 88.7 to 91.2
0
Manganese (Mn), % 0.15 to 0.5
0 to 1.5
Nickel (Ni), % 0 to 0.0020
57.9 to 70.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
2.7 to 3.7
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0.35 to 1.0
0