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AS41A Magnesium vs. EN 1.3975 Stainless Steel

AS41A magnesium belongs to the magnesium alloys classification, while EN 1.3975 stainless steel belongs to the iron alloys. There are 25 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 AS41A magnesium and the bottom bar is EN 1.3975 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 11
27
Fatigue Strength, MPa 100
230
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
76
Tensile Strength: Ultimate (UTS), MPa 230
660
Tensile Strength: Yield (Proof), MPa 140
320

Thermal Properties

Latent Heat of Fusion, J/g 370
340
Maximum Temperature: Mechanical, °C 110
910
Melting Completion (Liquidus), °C 620
1360
Melting Onset (Solidus), °C 570
1320
Specific Heat Capacity, J/kg-K 1000
500
Thermal Expansion, µm/m-K 26
16

Otherwise Unclassified Properties

Base Metal Price, % relative 12
15
Density, g/cm3 1.6
7.5
Embodied Carbon, kg CO2/kg material 23
3.3
Embodied Energy, MJ/kg 160
47
Embodied Water, L/kg 980
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
150
Resilience: Unit (Modulus of Resilience), kJ/m3 220
270
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
26
Strength to Weight: Axial, points 38
24
Strength to Weight: Bending, points 50
22
Thermal Shock Resistance, points 14
15

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 0 to 0.060
0
Iron (Fe), % 0
58.2 to 65.4
Magnesium (Mg), % 92.8 to 95.8
0
Manganese (Mn), % 0.2 to 0.5
7.0 to 9.0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.030
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.5 to 1.5
3.5 to 4.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.12
0