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Grade 366 Molybdenum vs. SAE-AISI M33 Steel

Grade 366 molybdenum belongs to the otherwise unclassified metals classification, while SAE-AISI M33 steel belongs to the iron alloys. There are 16 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is grade 366 molybdenum and the bottom bar is SAE-AISI M33 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 300
200
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 120
78
Tensile Strength: Ultimate (UTS), MPa 580
810 to 2210

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Specific Heat Capacity, J/kg-K 210
440
Thermal Expansion, µm/m-K 7.6
12

Otherwise Unclassified Properties

Density, g/cm3 12
8.2
Embodied Carbon, kg CO2/kg material 27
7.7
Embodied Energy, MJ/kg 340
110
Embodied Water, L/kg 300
150

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 13
27 to 75
Strength to Weight: Bending, points 13
24 to 46
Thermal Shock Resistance, points 18
25 to 68

Alloy Composition

Carbon (C), % 0 to 0.030
0.85 to 0.92
Chromium (Cr), % 0
3.5 to 4.0
Cobalt (Co), % 0
7.8 to 8.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 0.010
71.4 to 76.3
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 66.9 to 73
9.0 to 10
Nickel (Ni), % 0 to 0.0020
0 to 0.3
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.0025
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0.15 to 0.5
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 27 to 33
1.3 to 2.1
Vanadium (V), % 0
1.0 to 1.4