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AISI 415 Stainless Steel vs. ISO-WD32250 Magnesium

AISI 415 stainless steel belongs to the iron alloys classification, while ISO-WD32250 magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 AISI 415 stainless steel and the bottom bar is ISO-WD32250 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 17
4.5 to 8.6
Fatigue Strength, MPa 430
170 to 210
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
17
Shear Strength, MPa 550
180 to 190
Tensile Strength: Ultimate (UTS), MPa 900
310 to 330
Tensile Strength: Yield (Proof), MPa 700
240 to 290

Thermal Properties

Latent Heat of Fusion, J/g 270
340
Maximum Temperature: Mechanical, °C 780
120
Melting Completion (Liquidus), °C 1450
600
Melting Onset (Solidus), °C 1400
550
Specific Heat Capacity, J/kg-K 480
980
Thermal Conductivity, W/m-K 24
130
Thermal Expansion, µm/m-K 10
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
25
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
130

Otherwise Unclassified Properties

Base Metal Price, % relative 11
13
Density, g/cm3 7.8
1.8
Embodied Carbon, kg CO2/kg material 2.5
24
Embodied Energy, MJ/kg 35
160
Embodied Water, L/kg 110
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
14 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 1250
630 to 930
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
67
Strength to Weight: Axial, points 32
49 to 51
Strength to Weight: Bending, points 26
58 to 60
Thermal Diffusivity, mm2/s 6.4
72
Thermal Shock Resistance, points 33
19 to 20

Alloy Composition

Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 11.5 to 14
0
Iron (Fe), % 77.8 to 84
0
Magnesium (Mg), % 0
94.9 to 97.1
Manganese (Mn), % 0.5 to 1.0
0
Molybdenum (Mo), % 0.5 to 1.0
0
Nickel (Ni), % 3.5 to 5.5
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
2.5 to 4.0
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3