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Grade 366 Molybdenum vs. EN 1.4901 Stainless Steel

Grade 366 molybdenum belongs to the otherwise unclassified metals classification, while EN 1.4901 stainless steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is grade 366 molybdenum and the bottom bar is EN 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 300
190
Elongation at Break, % 2.2
19
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 120
76
Tensile Strength: Ultimate (UTS), MPa 580
740
Tensile Strength: Yield (Proof), MPa 470
490

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Specific Heat Capacity, J/kg-K 210
470
Thermal Expansion, µm/m-K 7.6
12

Otherwise Unclassified Properties

Density, g/cm3 12
7.9
Embodied Carbon, kg CO2/kg material 27
2.8
Embodied Energy, MJ/kg 340
40
Embodied Water, L/kg 300
89

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
120
Resilience: Unit (Modulus of Resilience), kJ/m3 370
620
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 13
26
Strength to Weight: Bending, points 13
23
Thermal Shock Resistance, points 18
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0 to 0.030
0.070 to 0.13
Chromium (Cr), % 0
8.5 to 9.5
Iron (Fe), % 0 to 0.010
85.8 to 89.1
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 66.9 to 73
0.3 to 0.6
Nickel (Ni), % 0 to 0.0020
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0 to 0.0020
0.030 to 0.070
Oxygen (O), % 0 to 0.0025
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.010
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 27 to 33
1.5 to 2.0
Vanadium (V), % 0
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.010