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EN-MC21320 Magnesium vs. AISI 201LN Stainless Steel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while AISI 201LN stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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-MC21320 magnesium and the bottom bar is AISI 201LN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
210 to 320
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 7.5
25 to 51
Fatigue Strength, MPa 95
340 to 540
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
77
Shear Strength, MPa 130
530 to 680
Tensile Strength: Ultimate (UTS), MPa 230
740 to 1060
Tensile Strength: Yield (Proof), MPa 140
350 to 770

Thermal Properties

Latent Heat of Fusion, J/g 370
280
Maximum Temperature: Mechanical, °C 110
880
Melting Completion (Liquidus), °C 600
1410
Melting Onset (Solidus), °C 530
1370
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 66
15
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 91
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 1.6
7.7
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
38
Embodied Water, L/kg 980
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
230 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 200
310 to 1520
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 38
27 to 38
Strength to Weight: Bending, points 50
24 to 30
Thermal Diffusivity, mm2/s 40
4.0
Thermal Shock Resistance, points 13
16 to 23

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
16 to 17.5
Copper (Cu), % 0 to 0.010
0 to 1.0
Iron (Fe), % 0 to 0.0050
67.9 to 73.5
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
6.4 to 7.5
Nickel (Ni), % 0 to 0.0020
4.0 to 5.0
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.5 to 1.5
0 to 0.75
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0