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ISO-WD32250 Magnesium vs. EN 1.4818 Stainless Steel

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while EN 1.4818 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 ISO-WD32250 magnesium and the bottom bar is EN 1.4818 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 4.5 to 8.6
40
Fatigue Strength, MPa 170 to 210
280
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 180 to 190
480
Tensile Strength: Ultimate (UTS), MPa 310 to 330
700
Tensile Strength: Yield (Proof), MPa 240 to 290
330

Thermal Properties

Latent Heat of Fusion, J/g 340
300
Maximum Temperature: Mechanical, °C 120
1050
Melting Completion (Liquidus), °C 600
1410
Melting Onset (Solidus), °C 550
1370
Specific Heat Capacity, J/kg-K 980
490
Thermal Conductivity, W/m-K 130
17
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
16
Density, g/cm3 1.8
7.7
Embodied Carbon, kg CO2/kg material 24
3.1
Embodied Energy, MJ/kg 160
44
Embodied Water, L/kg 950
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 26
230
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 930
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 67
25
Strength to Weight: Axial, points 49 to 51
25
Strength to Weight: Bending, points 58 to 60
23
Thermal Diffusivity, mm2/s 72
4.5
Thermal Shock Resistance, points 19 to 20
15

Alloy Composition


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Carbon (C), % 0
0.040 to 0.080
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 0
18 to 20
Iron (Fe), % 0
65.6 to 71.8
Magnesium (Mg), % 94.9 to 97.1
0
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
9.0 to 11
Nitrogen (N), % 0
0.12 to 0.2
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
1.0 to 2.0
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 2.5 to 4.0
0
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0 to 0.3
0