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EN-MC21320 Magnesium vs. EN 1.4104 Stainless Steel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while EN 1.4104 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-MC21320 magnesium and the bottom bar is EN 1.4104 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 7.5
11 to 23
Fatigue Strength, MPa 95
230 to 310
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
77
Shear Strength, MPa 130
400 to 450
Tensile Strength: Ultimate (UTS), MPa 230
630 to 750
Tensile Strength: Yield (Proof), MPa 140
350 to 560

Thermal Properties

Latent Heat of Fusion, J/g 370
280
Maximum Temperature: Mechanical, °C 110
860
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 530
1390
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 66
25
Thermal Expansion, µm/m-K 26
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 91
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
8.5
Density, g/cm3 1.6
7.7
Embodied Carbon, kg CO2/kg material 23
2.2
Embodied Energy, MJ/kg 160
30
Embodied Water, L/kg 980
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
77 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 200
310 to 800
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 38
23 to 27
Strength to Weight: Bending, points 50
21 to 24
Thermal Diffusivity, mm2/s 40
6.7
Thermal Shock Resistance, points 13
22 to 27

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0.1 to 0.17
Chromium (Cr), % 0
15.5 to 17.5
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
78.8 to 84.1
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0 to 1.5
Molybdenum (Mo), % 0
0.2 to 0.6
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.5 to 1.5
0 to 1.0
Sulfur (S), % 0
0.15 to 0.35
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0