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WE43B Magnesium vs. EN 1.0303 Steel

WE43B magnesium belongs to the magnesium alloys classification, while EN 1.0303 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 WE43B magnesium and the bottom bar is EN 1.0303 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.2
12 to 25
Fatigue Strength, MPa 110
150 to 230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 140
220 to 260
Tensile Strength: Ultimate (UTS), MPa 250
290 to 410
Tensile Strength: Yield (Proof), MPa 200
200 to 320

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Maximum Temperature: Mechanical, °C 180
400
Melting Completion (Liquidus), °C 640
1470
Melting Onset (Solidus), °C 550
1430
Specific Heat Capacity, J/kg-K 960
470
Thermal Conductivity, W/m-K 51
53
Thermal Expansion, µm/m-K 27
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 53
7.9

Otherwise Unclassified Properties

Base Metal Price, % relative 34
1.8
Density, g/cm3 1.9
7.9
Embodied Carbon, kg CO2/kg material 28
1.4
Embodied Energy, MJ/kg 250
18
Embodied Water, L/kg 910
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2
30 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 430
110 to 270
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 61
24
Strength to Weight: Axial, points 36
10 to 15
Strength to Weight: Bending, points 46
12 to 16
Thermal Diffusivity, mm2/s 28
14
Thermal Shock Resistance, points 15
9.2 to 13

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.060
Carbon (C), % 0
0.020 to 0.060
Copper (Cu), % 0 to 0.020
0
Iron (Fe), % 0 to 0.010
99.335 to 99.71
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 89.8 to 93.5
0
Manganese (Mn), % 0 to 0.030
0.25 to 0.4
Nickel (Ni), % 0 to 0.0050
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.1
Sulfur (S), % 0
0 to 0.025
Unspecified Rare Earths, % 2.4 to 4.4
0
Yttrium (Y), % 3.7 to 4.3
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0