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AM50A Magnesium vs. N08366 Stainless Steel

AM50A magnesium belongs to the magnesium alloys classification, while N08366 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 N08366 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58
180
Elastic (Young's, Tensile) Modulus, GPa 45
210
Elongation at Break, % 11
34
Fatigue Strength, MPa 70
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
80
Shear Strength, MPa 120
390
Tensile Strength: Ultimate (UTS), MPa 210
590
Tensile Strength: Yield (Proof), MPa 120
240

Thermal Properties

Latent Heat of Fusion, J/g 350
310
Maximum Temperature: Mechanical, °C 120
1100
Melting Completion (Liquidus), °C 620
1460
Melting Onset (Solidus), °C 570
1410
Specific Heat Capacity, J/kg-K 1000
460
Thermal Conductivity, W/m-K 65
13
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 88
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
33
Density, g/cm3 1.7
8.1
Embodied Carbon, kg CO2/kg material 23
6.2
Embodied Energy, MJ/kg 160
84
Embodied Water, L/kg 990
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
160
Resilience: Unit (Modulus of Resilience), kJ/m3 150
150
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
24
Strength to Weight: Axial, points 35
20
Strength to Weight: Bending, points 47
19
Thermal Diffusivity, mm2/s 39
3.4
Thermal Shock Resistance, points 13
13

Alloy Composition

Aluminum (Al), % 4.4 to 5.4
0
Carbon (C), % 0
0 to 0.035
Chromium (Cr), % 0
20 to 22
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0040
42.4 to 50.5
Magnesium (Mg), % 93.7 to 95.3
0
Manganese (Mn), % 0.26 to 0.6
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0 to 0.0020
23.5 to 25.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.22
0