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Grade 360 Molybdenum vs. S21640 Stainless Steel

Grade 360 molybdenum belongs to the otherwise unclassified metals classification, while S21640 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 360 molybdenum and the bottom bar is S21640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 310
200
Elongation at Break, % 6.3 to 17
46
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 120
78
Tensile Strength: Ultimate (UTS), MPa 430 to 620
740
Tensile Strength: Yield (Proof), MPa 270 to 530
350

Thermal Properties

Latent Heat of Fusion, J/g 370
290
Specific Heat Capacity, J/kg-K 250
480
Thermal Expansion, µm/m-K 7.0
17

Otherwise Unclassified Properties

Density, g/cm3 10
7.7
Embodied Carbon, kg CO2/kg material 28
3.6
Embodied Energy, MJ/kg 330
51
Embodied Water, L/kg 360
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 64
280
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 450
300
Stiffness to Weight: Axial, points 17
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 12 to 17
27
Strength to Weight: Bending, points 12 to 16
23
Thermal Shock Resistance, points 14 to 21
16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 0
17.5 to 19.5
Iron (Fe), % 0 to 0.010
63 to 74.3
Manganese (Mn), % 0
3.5 to 6.5
Molybdenum (Mo), % 99.9 to 100
0.5 to 2.0
Nickel (Ni), % 0 to 0.0020
4.0 to 6.5
Niobium (Nb), % 0
0.1 to 1.0
Nitrogen (N), % 0 to 0.0020
0.080 to 0.3
Oxygen (O), % 0 to 0.0015
0
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0 to 0.010
0 to 1.0
Sulfur (S), % 0
0 to 0.030