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AS41A Magnesium vs. S35135 Stainless Steel

AS41A magnesium belongs to the magnesium alloys classification, while S35135 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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 S35135 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
34
Fatigue Strength, MPa 100
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
79
Shear Strength, MPa 130
390
Tensile Strength: Ultimate (UTS), MPa 230
590
Tensile Strength: Yield (Proof), MPa 140
230

Thermal Properties

Latent Heat of Fusion, J/g 370
320
Maximum Temperature: Mechanical, °C 110
1100
Melting Completion (Liquidus), °C 620
1430
Melting Onset (Solidus), °C 570
1380
Specific Heat Capacity, J/kg-K 1000
470
Thermal Expansion, µm/m-K 26
16

Otherwise Unclassified Properties

Base Metal Price, % relative 12
37
Density, g/cm3 1.6
8.1
Embodied Carbon, kg CO2/kg material 23
6.8
Embodied Energy, MJ/kg 160
94
Embodied Water, L/kg 980
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
160
Resilience: Unit (Modulus of Resilience), kJ/m3 220
130
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 38
20
Strength to Weight: Bending, points 50
19
Thermal Shock Resistance, points 14
13

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
20 to 25
Copper (Cu), % 0 to 0.060
0 to 0.75
Iron (Fe), % 0
28.3 to 45
Magnesium (Mg), % 92.8 to 95.8
0
Manganese (Mn), % 0.2 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
4.0 to 4.8
Nickel (Ni), % 0 to 0.030
30 to 38
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.5 to 1.5
0.6 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0.4 to 1.0
Zinc (Zn), % 0 to 0.12
0