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EN-MC21320 Magnesium vs. EN 1.4864 Stainless Steel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while EN 1.4864 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 EN 1.4864 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
190
Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 7.5
33
Fatigue Strength, MPa 95
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
75
Shear Strength, MPa 130
430
Tensile Strength: Ultimate (UTS), MPa 230
650
Tensile Strength: Yield (Proof), MPa 140
260

Thermal Properties

Latent Heat of Fusion, J/g 370
310
Maximum Temperature: Mechanical, °C 110
1100
Melting Completion (Liquidus), °C 600
1390
Melting Onset (Solidus), °C 530
1340
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 66
13
Thermal Expansion, µm/m-K 26
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 91
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
30
Density, g/cm3 1.6
8.0
Embodied Carbon, kg CO2/kg material 23
5.3
Embodied Energy, MJ/kg 160
75
Embodied Water, L/kg 980
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
170
Resilience: Unit (Modulus of Resilience), kJ/m3 200
170
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 38
23
Strength to Weight: Bending, points 50
21
Thermal Diffusivity, mm2/s 40
3.3
Thermal Shock Resistance, points 13
17

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
15 to 17
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
41.7 to 51
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0 to 2.0
Nickel (Ni), % 0 to 0.0020
33 to 37
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.5 to 1.5
1.0 to 2.0
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0