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Grade 366 Molybdenum vs. AISI 309Cb Stainless Steel

Grade 366 molybdenum belongs to the otherwise unclassified metals classification, while AISI 309Cb 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 AISI 309Cb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 300
200
Elongation at Break, % 2.2
39
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 120
78
Tensile Strength: Ultimate (UTS), MPa 580
580
Tensile Strength: Yield (Proof), MPa 470
230

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
16

Otherwise Unclassified Properties

Density, g/cm3 12
7.8
Embodied Carbon, kg CO2/kg material 27
4.1
Embodied Energy, MJ/kg 340
59
Embodied Water, L/kg 300
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
180
Resilience: Unit (Modulus of Resilience), kJ/m3 370
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 13
20
Strength to Weight: Bending, points 13
20
Thermal Shock Resistance, points 18
13

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 0
22 to 24
Iron (Fe), % 0 to 0.010
56 to 66
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 66.9 to 73
0
Nickel (Ni), % 0 to 0.0020
12 to 16
Niobium (Nb), % 0
0 to 1.1
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.0025
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.010
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 27 to 33
0