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QE22A Magnesium vs. AISI 422 Stainless Steel

QE22A magnesium belongs to the magnesium alloys classification, while AISI 422 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (9, 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 AISI 422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
260 to 330
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 2.4
15 to 17
Fatigue Strength, MPa 110
410 to 500
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
76
Shear Strength, MPa 150
560 to 660
Tensile Strength: Ultimate (UTS), MPa 250
910 to 1080
Tensile Strength: Yield (Proof), MPa 190
670 to 870

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Maximum Temperature: Mechanical, °C 250
650
Melting Completion (Liquidus), °C 640
1480
Melting Onset (Solidus), °C 570
1470
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
24
Thermal Expansion, µm/m-K 27
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 120
5.3

Otherwise Unclassified Properties

Density, g/cm3 2.0
7.9
Embodied Carbon, kg CO2/kg material 27
3.1
Embodied Energy, MJ/kg 220
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 400
1140 to 1910
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 60
25
Strength to Weight: Axial, points 36
32 to 38
Strength to Weight: Bending, points 46
26 to 30
Thermal Diffusivity, mm2/s 59
6.4
Thermal Shock Resistance, points 15
33 to 39

Alloy Composition

Carbon (C), % 0
0.2 to 0.25
Chromium (Cr), % 0
11 to 12.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0
81.9 to 85.8
Magnesium (Mg), % 93.1 to 95.8
0
Manganese (Mn), % 0
0.5 to 1.0
Molybdenum (Mo), % 0
0.9 to 1.3
Nickel (Ni), % 0 to 0.010
0.5 to 1.0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.5
Silver (Ag), % 2.0 to 3.0
0
Sulfur (S), % 0
0 to 0.025
Tungsten (W), % 0
0.9 to 1.3
Unspecified Rare Earths, % 1.8 to 2.5
0
Vanadium (V), % 0
0.2 to 0.3
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0