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AS41A Magnesium vs. AISI 201 Stainless Steel

AS41A magnesium belongs to the magnesium alloys classification, while AISI 201 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 AS41A magnesium and the bottom bar is AISI 201 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
4.6 to 51
Fatigue Strength, MPa 100
280 to 600
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 130
450 to 840
Tensile Strength: Ultimate (UTS), MPa 230
650 to 1450
Tensile Strength: Yield (Proof), MPa 140
300 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 370
280
Maximum Temperature: Mechanical, °C 110
880
Melting Completion (Liquidus), °C 620
1410
Melting Onset (Solidus), °C 570
1370
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 68
15
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 92
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 1.6
7.7
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
38
Embodied Water, L/kg 980
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
61 to 340
Resilience: Unit (Modulus of Resilience), kJ/m3 220
230 to 2970
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 38
23 to 52
Strength to Weight: Bending, points 50
22 to 37
Thermal Diffusivity, mm2/s 41
4.0
Thermal Shock Resistance, points 14
14 to 32

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 0 to 0.060
0
Iron (Fe), % 0
67.5 to 75
Magnesium (Mg), % 92.8 to 95.8
0
Manganese (Mn), % 0.2 to 0.5
5.5 to 7.5
Nickel (Ni), % 0 to 0.030
3.5 to 5.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0.5 to 1.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.12
0