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EN-MC21210 Magnesium vs. N08925 Stainless Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while N08925 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 EN-MC21210 magnesium and the bottom bar is N08925 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 14
45
Fatigue Strength, MPa 70
310
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
80
Shear Strength, MPa 110
470
Tensile Strength: Ultimate (UTS), MPa 190
680
Tensile Strength: Yield (Proof), MPa 90
340

Thermal Properties

Latent Heat of Fusion, J/g 350
300
Maximum Temperature: Mechanical, °C 100
1100
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 570
1410
Specific Heat Capacity, J/kg-K 1000
460
Thermal Conductivity, W/m-K 120
13
Thermal Expansion, µm/m-K 27
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 130
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
33
Density, g/cm3 1.6
8.1
Embodied Carbon, kg CO2/kg material 24
6.2
Embodied Energy, MJ/kg 160
84
Embodied Water, L/kg 980
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
250
Resilience: Unit (Modulus of Resilience), kJ/m3 92
280
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 32
23
Strength to Weight: Bending, points 44
21
Thermal Diffusivity, mm2/s 76
3.5
Thermal Shock Resistance, points 11
15

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 0 to 0.010
0.8 to 1.5
Iron (Fe), % 0 to 0.0050
42.7 to 50.1
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0 to 0.0020
24 to 26
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0