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WE54A Magnesium vs. S32304 Stainless Steel

WE54A magnesium belongs to the magnesium alloys classification, while S32304 stainless steel belongs to the iron alloys. There are 31 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 WE54A magnesium and the bottom bar is S32304 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
250
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 4.3 to 5.6
28
Fatigue Strength, MPa 98 to 130
330
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 17
79
Shear Strength, MPa 150 to 170
440
Tensile Strength: Ultimate (UTS), MPa 270 to 300
670
Tensile Strength: Yield (Proof), MPa 180
460

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 170
1050
Melting Completion (Liquidus), °C 640
1420
Melting Onset (Solidus), °C 570
1380
Specific Heat Capacity, J/kg-K 960
480
Thermal Conductivity, W/m-K 52
15
Thermal Expansion, µm/m-K 25
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 47
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 34
14
Density, g/cm3 1.9
7.7
Embodied Carbon, kg CO2/kg material 29
2.8
Embodied Energy, MJ/kg 260
40
Embodied Water, L/kg 900
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 10 to 14
170
Resilience: Unit (Modulus of Resilience), kJ/m3 360 to 380
520
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 62
25
Strength to Weight: Axial, points 39 to 43
24
Strength to Weight: Bending, points 49 to 51
22
Thermal Diffusivity, mm2/s 28
4.0
Thermal Shock Resistance, points 18 to 19
18

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
21.5 to 24.5
Copper (Cu), % 0 to 0.030
0.050 to 0.6
Iron (Fe), % 0 to 0.010
65 to 75.4
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 88.7 to 93.4
0
Manganese (Mn), % 0 to 0.030
0 to 2.5
Molybdenum (Mo), % 0
0.050 to 0.6
Nickel (Ni), % 0 to 0.0050
3.0 to 5.5
Nitrogen (N), % 0
0.050 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.010
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Unspecified Rare Earths, % 1.5 to 4.0
0
Yttrium (Y), % 4.8 to 5.5
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0