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Grade 366 Molybdenum vs. S33228 Stainless Steel

Grade 366 molybdenum belongs to the otherwise unclassified metals classification, while S33228 stainless steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is grade 366 molybdenum and the bottom bar is S33228 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 300
200
Elongation at Break, % 2.2
34
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 120
79
Tensile Strength: Ultimate (UTS), MPa 580
570
Tensile Strength: Yield (Proof), MPa 470
210

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Specific Heat Capacity, J/kg-K 210
470
Thermal Expansion, µm/m-K 7.6
16

Otherwise Unclassified Properties

Density, g/cm3 12
8.0
Embodied Carbon, kg CO2/kg material 27
6.2
Embodied Energy, MJ/kg 340
89
Embodied Water, L/kg 300
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
150
Resilience: Unit (Modulus of Resilience), kJ/m3 370
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 13
20
Strength to Weight: Bending, points 13
19
Thermal Shock Resistance, points 18
13

Alloy Composition

Aluminum (Al), % 0
0 to 0.025
Carbon (C), % 0 to 0.030
0.040 to 0.080
Cerium (Ce), % 0
0.050 to 0.1
Chromium (Cr), % 0
26 to 28
Iron (Fe), % 0 to 0.010
36.5 to 42.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 66.9 to 73
0
Nickel (Ni), % 0 to 0.0020
31 to 33
Niobium (Nb), % 0
0.6 to 1.0
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.0025
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.010
0 to 0.3
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 27 to 33
0