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AS41A Magnesium vs. AISI 316L Stainless Steel

AS41A magnesium belongs to the magnesium alloys classification, while AISI 316L stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 316L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
9.0 to 50
Fatigue Strength, MPa 100
170 to 450
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
78
Shear Strength, MPa 130
370 to 690
Tensile Strength: Ultimate (UTS), MPa 230
530 to 1160
Tensile Strength: Yield (Proof), MPa 140
190 to 870

Thermal Properties

Latent Heat of Fusion, J/g 370
290
Maximum Temperature: Mechanical, °C 110
870
Melting Completion (Liquidus), °C 620
1400
Melting Onset (Solidus), °C 570
1380
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 68
15
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 92
2.6

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 21
77 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 220
93 to 1880
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 38
19 to 41
Strength to Weight: Bending, points 50
18 to 31
Thermal Diffusivity, mm2/s 41
4.1
Thermal Shock Resistance, points 14
12 to 25

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 0 to 0.060
0
Iron (Fe), % 0
62 to 72
Magnesium (Mg), % 92.8 to 95.8
0
Manganese (Mn), % 0.2 to 0.5
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0 to 0.030
10 to 14
Nitrogen (N), % 0
0 to 0.1
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 0.12
0