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EN-MC21320 Magnesium vs. AISI 316N Stainless Steel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while AISI 316N 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 316N stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
190 to 350
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 7.5
9.0 to 39
Fatigue Strength, MPa 95
230 to 450
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
78
Shear Strength, MPa 130
420 to 690
Tensile Strength: Ultimate (UTS), MPa 230
620 to 1160
Tensile Strength: Yield (Proof), MPa 140
270 to 870

Thermal Properties

Latent Heat of Fusion, J/g 370
290
Maximum Temperature: Mechanical, °C 110
940
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 530
1400
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 66
15
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 91
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
19
Density, g/cm3 1.6
7.9
Embodied Carbon, kg CO2/kg material 23
3.9
Embodied Energy, MJ/kg 160
53
Embodied Water, L/kg 980
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
95 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 200
180 to 1880
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 38
22 to 41
Strength to Weight: Bending, points 50
20 to 31
Thermal Diffusivity, mm2/s 40
4.1
Thermal Shock Resistance, points 13
14 to 26

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
61.9 to 71.9
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0 to 0.0020
10 to 14
Nitrogen (N), % 0
0.1 to 0.16
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.5 to 1.5
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0