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Grade 363 Molybdenum vs. S40920 Stainless Steel

Grade 363 molybdenum belongs to the otherwise unclassified metals classification, while S40920 stainless steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is grade 363 molybdenum and the bottom bar is S40920 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 310
190
Elongation at Break, % 6.2 to 11
22
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 120
75
Tensile Strength: Ultimate (UTS), MPa 580 to 720
430
Tensile Strength: Yield (Proof), MPa 350 to 620
190

Thermal Properties

Latent Heat of Fusion, J/g 370
270
Specific Heat Capacity, J/kg-K 250
480
Thermal Expansion, µm/m-K 7.0
10

Otherwise Unclassified Properties

Density, g/cm3 10
7.7
Embodied Carbon, kg CO2/kg material 28
2.0
Embodied Energy, MJ/kg 330
28
Embodied Water, L/kg 360
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 43 to 57
78
Resilience: Unit (Modulus of Resilience), kJ/m3 200 to 630
97
Stiffness to Weight: Axial, points 17
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 16 to 20
15
Strength to Weight: Bending, points 15 to 17
16
Thermal Shock Resistance, points 19 to 24
15

Alloy Composition

Carbon (C), % 0.010 to 0.030
0 to 0.030
Chromium (Cr), % 0
10.5 to 11.7
Iron (Fe), % 0 to 0.010
85.1 to 89.4
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 99.3 to 99.5
0
Nickel (Ni), % 0 to 0.0020
0 to 0.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0 to 0.0020
0 to 0.030
Oxygen (O), % 0 to 0.0030
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.010
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0.4 to 0.55
0.15 to 0.5
Zirconium (Zr), % 0.060 to 0.12
0