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EN-MC21210 Magnesium vs. EN 1.4404 Stainless Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while EN 1.4404 stainless steel belongs to the iron alloys. There are 31 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 EN 1.4404 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
190 to 270
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 14
14 to 43
Fatigue Strength, MPa 70
220 to 320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
78
Shear Strength, MPa 110
420 to 550
Tensile Strength: Ultimate (UTS), MPa 190
600 to 900
Tensile Strength: Yield (Proof), MPa 90
240 to 570

Thermal Properties

Latent Heat of Fusion, J/g 350
290
Maximum Temperature: Mechanical, °C 100
950
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 570
1400
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 27
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
19
Density, g/cm3 1.6
7.9
Embodied Carbon, kg CO2/kg material 24
3.8
Embodied Energy, MJ/kg 160
52
Embodied Water, L/kg 980
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
110 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 92
140 to 800
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 32
21 to 32
Strength to Weight: Bending, points 44
20 to 26
Thermal Diffusivity, mm2/s 76
4.0
Thermal Shock Resistance, points 11
13 to 20

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
16.5 to 18.5
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
62.8 to 71.5
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 0 to 0.0020
10 to 13
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0