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AS41A Magnesium vs. EN 1.4901 Stainless Steel

AS41A magnesium belongs to the magnesium alloys classification, while EN 1.4901 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 EN 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 11
19
Fatigue Strength, MPa 100
310
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
76
Shear Strength, MPa 130
460
Tensile Strength: Ultimate (UTS), MPa 230
740
Tensile Strength: Yield (Proof), MPa 140
490

Thermal Properties

Latent Heat of Fusion, J/g 370
260
Maximum Temperature: Mechanical, °C 110
650
Melting Completion (Liquidus), °C 620
1490
Melting Onset (Solidus), °C 570
1450
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 68
26
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 92
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
11
Density, g/cm3 1.6
7.9
Embodied Carbon, kg CO2/kg material 23
2.8
Embodied Energy, MJ/kg 160
40
Embodied Water, L/kg 980
89

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
120
Resilience: Unit (Modulus of Resilience), kJ/m3 220
620
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 38
26
Strength to Weight: Bending, points 50
23
Thermal Diffusivity, mm2/s 41
6.9
Thermal Shock Resistance, points 14
23

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0
0.070 to 0.13
Chromium (Cr), % 0
8.5 to 9.5
Copper (Cu), % 0 to 0.060
0
Iron (Fe), % 0
85.8 to 89.1
Magnesium (Mg), % 92.8 to 95.8
0
Manganese (Mn), % 0.2 to 0.5
0.3 to 0.6
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 0 to 0.030
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0.5 to 1.5
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
1.5 to 2.0
Vanadium (V), % 0
0.15 to 0.25
Zinc (Zn), % 0 to 0.12
0
Zirconium (Zr), % 0
0 to 0.010