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Grade N7M Nickel vs. WE43B Magnesium

Grade N7M nickel belongs to the nickel alloys classification, while WE43B magnesium belongs to the magnesium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, 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 grade N7M nickel and the bottom bar is WE43B magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
44
Elongation at Break, % 22
2.2
Fatigue Strength, MPa 190
110
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 85
17
Tensile Strength: Ultimate (UTS), MPa 590
250
Tensile Strength: Yield (Proof), MPa 310
200

Thermal Properties

Latent Heat of Fusion, J/g 320
330
Maximum Temperature: Mechanical, °C 900
180
Melting Completion (Liquidus), °C 1650
640
Melting Onset (Solidus), °C 1590
550
Specific Heat Capacity, J/kg-K 390
960
Thermal Expansion, µm/m-K 9.9
27

Otherwise Unclassified Properties

Base Metal Price, % relative 75
34
Density, g/cm3 9.3
1.9
Embodied Carbon, kg CO2/kg material 16
28
Embodied Energy, MJ/kg 200
250
Embodied Water, L/kg 270
910

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
5.2
Resilience: Unit (Modulus of Resilience), kJ/m3 220
430
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 22
61
Strength to Weight: Axial, points 18
36
Strength to Weight: Bending, points 17
46
Thermal Shock Resistance, points 19
15

Alloy Composition

Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 0 to 1.0
0
Copper (Cu), % 0
0 to 0.020
Iron (Fe), % 0 to 3.0
0 to 0.010
Lithium (Li), % 0
0 to 0.2
Magnesium (Mg), % 0
89.8 to 93.5
Manganese (Mn), % 0 to 1.0
0 to 0.030
Molybdenum (Mo), % 30 to 33
0
Nickel (Ni), % 60.9 to 70
0 to 0.0050
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Unspecified Rare Earths, % 0
2.4 to 4.4
Yttrium (Y), % 0
3.7 to 4.3
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0.4 to 1.0