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AS41B Magnesium vs. S30601 Stainless Steel

AS41B magnesium belongs to the magnesium alloys classification, while S30601 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, 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 AS41B magnesium and the bottom bar is S30601 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 6.0
37
Fatigue Strength, MPa 97
250
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
75
Shear Strength, MPa 120
450
Tensile Strength: Ultimate (UTS), MPa 210
660
Tensile Strength: Yield (Proof), MPa 140
300

Thermal Properties

Latent Heat of Fusion, J/g 370
370
Maximum Temperature: Mechanical, °C 110
950
Melting Completion (Liquidus), °C 620
1360
Melting Onset (Solidus), °C 570
1310
Specific Heat Capacity, J/kg-K 1000
500
Thermal Expansion, µm/m-K 26
15

Otherwise Unclassified Properties

Base Metal Price, % relative 12
20
Density, g/cm3 1.7
7.6
Embodied Carbon, kg CO2/kg material 23
3.9
Embodied Energy, MJ/kg 160
55
Embodied Water, L/kg 980
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
200
Resilience: Unit (Modulus of Resilience), kJ/m3 220
230
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 35
24
Strength to Weight: Bending, points 47
22
Thermal Shock Resistance, points 13
16

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.015
Chromium (Cr), % 0
17 to 18
Copper (Cu), % 0 to 0.020
0 to 0.35
Iron (Fe), % 0 to 0.0035
56.9 to 60.5
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
0.5 to 0.8
Molybdenum (Mo), % 0
0 to 0.2
Nickel (Ni), % 0 to 0.0020
17 to 18
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.5 to 1.5
5.0 to 5.6
Sulfur (S), % 0
0 to 0.013
Zinc (Zn), % 0 to 0.12
0