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QE22A Magnesium vs. Nickel 690

QE22A magnesium belongs to the magnesium alloys classification, while nickel 690 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 QE22A magnesium and the bottom bar is nickel 690.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
90
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 2.4
3.4 to 34
Fatigue Strength, MPa 110
180 to 300
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
79
Shear Strength, MPa 150
420 to 570
Tensile Strength: Ultimate (UTS), MPa 250
640 to 990
Tensile Strength: Yield (Proof), MPa 190
250 to 760

Thermal Properties

Latent Heat of Fusion, J/g 340
320
Maximum Temperature: Mechanical, °C 250
1010
Melting Completion (Liquidus), °C 640
1380
Melting Onset (Solidus), °C 570
1340
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
14
Thermal Expansion, µm/m-K 27
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 120
1.6

Otherwise Unclassified Properties

Density, g/cm3 2.0
8.3
Embodied Carbon, kg CO2/kg material 27
8.2
Embodied Energy, MJ/kg 220
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
31 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 400
160 to 1440
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 60
24
Strength to Weight: Axial, points 36
21 to 33
Strength to Weight: Bending, points 46
20 to 27
Thermal Diffusivity, mm2/s 59
3.5
Thermal Shock Resistance, points 15
16 to 25

Alloy Composition

Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
27 to 31
Copper (Cu), % 0 to 0.1
0 to 0.5
Iron (Fe), % 0
7.0 to 11
Magnesium (Mg), % 93.1 to 95.8
0
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.010
58 to 66
Silicon (Si), % 0
0 to 0.5
Silver (Ag), % 2.0 to 3.0
0
Sulfur (S), % 0
0 to 0.015
Unspecified Rare Earths, % 1.8 to 2.5
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0