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EN-MC21210 Magnesium vs. AISI 403 Stainless Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while AISI 403 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, 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 AISI 403 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
190 to 240
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 14
16 to 25
Fatigue Strength, MPa 70
200 to 340
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
76
Shear Strength, MPa 110
340 to 480
Tensile Strength: Ultimate (UTS), MPa 190
530 to 780
Tensile Strength: Yield (Proof), MPa 90
280 to 570

Thermal Properties

Latent Heat of Fusion, J/g 350
270
Maximum Temperature: Mechanical, °C 100
740
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 570
1400
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 120
28
Thermal Expansion, µm/m-K 27
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 130
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
6.5
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 24
1.9
Embodied Energy, MJ/kg 160
27
Embodied Water, L/kg 980
99

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 92
210 to 840
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 32
19 to 28
Strength to Weight: Bending, points 44
19 to 24
Thermal Diffusivity, mm2/s 76
7.6
Thermal Shock Resistance, points 11
20 to 29

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
11.5 to 13
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
84.7 to 88.5
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0 to 1.0
Nickel (Ni), % 0 to 0.0020
0 to 0.6
Phosphorus (P), % 0
0 to 0.040
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