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Grade 366 Molybdenum vs. S32520 Stainless Steel

Grade 366 molybdenum belongs to the otherwise unclassified metals classification, while S32520 stainless steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is grade 366 molybdenum and the bottom bar is S32520 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 300
200
Elongation at Break, % 2.2
28
Poisson's Ratio 0.3
0.27
Shear Modulus, GPa 120
80
Tensile Strength: Ultimate (UTS), MPa 580
860
Tensile Strength: Yield (Proof), MPa 470
630

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Specific Heat Capacity, J/kg-K 210
480
Thermal Expansion, µm/m-K 7.6
13

Otherwise Unclassified Properties

Density, g/cm3 12
7.8
Embodied Carbon, kg CO2/kg material 27
4.0
Embodied Energy, MJ/kg 340
55
Embodied Water, L/kg 300
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
220
Resilience: Unit (Modulus of Resilience), kJ/m3 370
960
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 13
31
Strength to Weight: Bending, points 13
26
Thermal Shock Resistance, points 18
24

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 0
24 to 26
Copper (Cu), % 0
0.5 to 2.0
Iron (Fe), % 0 to 0.010
57.3 to 66.8
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 66.9 to 73
3.0 to 4.0
Nickel (Ni), % 0 to 0.0020
5.5 to 8.0
Nitrogen (N), % 0 to 0.0020
0.2 to 0.35
Oxygen (O), % 0 to 0.0025
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.010
0 to 0.8
Sulfur (S), % 0
0 to 0.020
Tungsten (W), % 27 to 33
0