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EN-MC21210 Magnesium vs. N08810 Stainless Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while N08810 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 N08810 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 14
33
Fatigue Strength, MPa 70
160
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 110
340
Tensile Strength: Ultimate (UTS), MPa 190
520
Tensile Strength: Yield (Proof), MPa 90
200

Thermal Properties

Latent Heat of Fusion, J/g 350
300
Maximum Temperature: Mechanical, °C 100
1100
Melting Completion (Liquidus), °C 600
1400
Melting Onset (Solidus), °C 570
1350
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 120
12
Thermal Expansion, µm/m-K 27
14

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
30
Density, g/cm3 1.6
8.0
Embodied Carbon, kg CO2/kg material 24
5.3
Embodied Energy, MJ/kg 160
76
Embodied Water, L/kg 980
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
140
Resilience: Unit (Modulus of Resilience), kJ/m3 92
100
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 32
18
Strength to Weight: Bending, points 44
18
Thermal Diffusivity, mm2/s 76
3.0
Thermal Shock Resistance, points 11
13

Alloy Composition

Aluminum (Al), % 1.6 to 2.6
0.15 to 0.6
Carbon (C), % 0
0.050 to 0.1
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 0 to 0.010
0 to 0.75
Iron (Fe), % 0 to 0.0050
39.5 to 50.7
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0 to 1.5
Nickel (Ni), % 0 to 0.0020
30 to 35
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.6
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0