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AM50A Magnesium vs. EN 1.4401 Stainless Steel

AM50A magnesium belongs to the magnesium alloys classification, while EN 1.4401 stainless steel belongs to the iron alloys. There are 31 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 AM50A magnesium and the bottom bar is EN 1.4401 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58
190 to 270
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
14 to 40
Fatigue Strength, MPa 70
200 to 320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
78
Shear Strength, MPa 120
410 to 550
Tensile Strength: Ultimate (UTS), MPa 210
600 to 900
Tensile Strength: Yield (Proof), MPa 120
230 to 570

Thermal Properties

Latent Heat of Fusion, J/g 350
290
Maximum Temperature: Mechanical, °C 120
950
Melting Completion (Liquidus), °C 620
1440
Melting Onset (Solidus), °C 570
1400
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 65
15
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 88
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
19
Density, g/cm3 1.7
7.9
Embodied Carbon, kg CO2/kg material 23
3.8
Embodied Energy, MJ/kg 160
52
Embodied Water, L/kg 990
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 150
130 to 800
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
25
Strength to Weight: Axial, points 35
21 to 32
Strength to Weight: Bending, points 47
20 to 26
Thermal Diffusivity, mm2/s 39
4.0
Thermal Shock Resistance, points 13
13 to 20

Alloy Composition

Aluminum (Al), % 4.4 to 5.4
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
16.5 to 18.5
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0040
62.8 to 71.5
Magnesium (Mg), % 93.7 to 95.3
0
Manganese (Mn), % 0.26 to 0.6
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 0 to 0.0020
10 to 13
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0 to 0.22
0