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EN-MC65220 Magnesium vs. EN 1.4981 Stainless Steel

EN-MC65220 magnesium belongs to the magnesium alloys classification, while EN 1.4981 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-MC65220 magnesium and the bottom bar is EN 1.4981 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
190
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 2.2
39
Fatigue Strength, MPa 110
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 150
420
Tensile Strength: Ultimate (UTS), MPa 270
610
Tensile Strength: Yield (Proof), MPa 200
240

Thermal Properties

Latent Heat of Fusion, J/g 340
290
Maximum Temperature: Mechanical, °C 160
940
Melting Completion (Liquidus), °C 610
1440
Melting Onset (Solidus), °C 550
1400
Specific Heat Capacity, J/kg-K 980
470
Thermal Conductivity, W/m-K 110
16
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 80
25
Density, g/cm3 1.9
7.9
Embodied Carbon, kg CO2/kg material 27
4.8
Embodied Energy, MJ/kg 210
67

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
190
Resilience: Unit (Modulus of Resilience), kJ/m3 450
150
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 62
24
Strength to Weight: Axial, points 40
21
Strength to Weight: Bending, points 49
20
Thermal Diffusivity, mm2/s 61
4.3
Thermal Shock Resistance, points 17
14

Alloy Composition


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Carbon (C), % 0
0.040 to 0.1
Chromium (Cr), % 0
15.5 to 17.5
Copper (Cu), % 0.050 to 0.1
0
Iron (Fe), % 0 to 0.010
59.6 to 66.7
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0 to 1.5
Molybdenum (Mo), % 0
1.6 to 2.0
Nickel (Ni), % 0 to 0.0050
15.5 to 17.5
Niobium (Nb), % 0
0.4 to 1.2
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.010
0.3 to 0.6
Silver (Ag), % 1.3 to 1.7
0
Sulfur (S), % 0
0 to 0.015
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0