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EN 1.4945 Stainless Steel vs. ISO-WD32260 Magnesium

EN 1.4945 stainless steel belongs to the iron alloys classification, while ISO-WD32260 magnesium belongs to the magnesium 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 EN 1.4945 stainless steel and the bottom bar is ISO-WD32260 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
46
Elongation at Break, % 19 to 34
4.5 to 6.0
Fatigue Strength, MPa 230 to 350
150 to 190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
18
Shear Strength, MPa 430 to 460
190 to 200
Tensile Strength: Ultimate (UTS), MPa 640 to 740
330 to 340
Tensile Strength: Yield (Proof), MPa 290 to 550
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Mechanical, °C 920
120
Melting Completion (Liquidus), °C 1490
600
Melting Onset (Solidus), °C 1440
520
Specific Heat Capacity, J/kg-K 470
970
Thermal Conductivity, W/m-K 14
110
Thermal Expansion, µm/m-K 17
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
28
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
140

Otherwise Unclassified Properties

Base Metal Price, % relative 30
13
Density, g/cm3 8.1
1.9
Embodied Carbon, kg CO2/kg material 5.0
23
Embodied Energy, MJ/kg 73
160
Embodied Water, L/kg 150
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
14 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 760
560 to 700
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
63
Strength to Weight: Axial, points 22 to 25
48 to 51
Strength to Weight: Bending, points 20 to 22
56 to 58
Thermal Diffusivity, mm2/s 3.7
63
Thermal Shock Resistance, points 14 to 16
19 to 20

Alloy Composition

Carbon (C), % 0.040 to 0.1
0
Chromium (Cr), % 15.5 to 17.5
0
Iron (Fe), % 57.9 to 65.7
0
Magnesium (Mg), % 0
92.7 to 94.8
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 15.5 to 17.5
0
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.3 to 0.6
0
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 2.5 to 3.5
0
Zinc (Zn), % 0
4.8 to 6.2
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3