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WE43B Magnesium vs. EN 1.4901 Stainless Steel

WE43B 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 (4, 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 WE43B magnesium and the bottom bar is EN 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.2
19
Fatigue Strength, MPa 110
310
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
76
Shear Strength, MPa 140
460
Tensile Strength: Ultimate (UTS), MPa 250
740
Tensile Strength: Yield (Proof), MPa 200
490

Thermal Properties

Latent Heat of Fusion, J/g 330
260
Maximum Temperature: Mechanical, °C 180
650
Melting Completion (Liquidus), °C 640
1490
Melting Onset (Solidus), °C 550
1450
Specific Heat Capacity, J/kg-K 960
470
Thermal Conductivity, W/m-K 51
26
Thermal Expansion, µm/m-K 27
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 53
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 34
11
Density, g/cm3 1.9
7.9
Embodied Carbon, kg CO2/kg material 28
2.8
Embodied Energy, MJ/kg 250
40
Embodied Water, L/kg 910
89

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2
120
Resilience: Unit (Modulus of Resilience), kJ/m3 430
620
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 61
24
Strength to Weight: Axial, points 36
26
Strength to Weight: Bending, points 46
23
Thermal Diffusivity, mm2/s 28
6.9
Thermal Shock Resistance, points 15
23

Alloy Composition

Aluminum (Al), % 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 0.020
0
Iron (Fe), % 0 to 0.010
85.8 to 89.1
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 89.8 to 93.5
0
Manganese (Mn), % 0 to 0.030
0.3 to 0.6
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 0 to 0.0050
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
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
Unspecified Rare Earths, % 2.4 to 4.4
0
Vanadium (V), % 0
0.15 to 0.25
Yttrium (Y), % 3.7 to 4.3
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0 to 0.010