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Grade 366 Molybdenum vs. EN 1.4423 Stainless Steel

Grade 366 molybdenum belongs to the otherwise unclassified metals classification, while EN 1.4423 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 1.4423 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 300
200
Elongation at Break, % 2.2
17
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 120
77
Tensile Strength: Ultimate (UTS), MPa 580
850
Tensile Strength: Yield (Proof), MPa 470
630

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Specific Heat Capacity, J/kg-K 210
470
Thermal Expansion, µm/m-K 7.6
9.9

Otherwise Unclassified Properties

Density, g/cm3 12
7.9
Embodied Carbon, kg CO2/kg material 27
3.2
Embodied Energy, MJ/kg 340
43
Embodied Water, L/kg 300
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
130
Resilience: Unit (Modulus of Resilience), kJ/m3 370
1000
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 13
30
Strength to Weight: Bending, points 13
25
Thermal Shock Resistance, points 18
31

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.020
Chromium (Cr), % 0
11 to 13
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 0 to 0.010
73.8 to 80.5
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 66.9 to 73
2.3 to 2.8
Nickel (Ni), % 0 to 0.0020
6.0 to 7.0
Nitrogen (N), % 0 to 0.0020
0 to 0.020
Oxygen (O), % 0 to 0.0025
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.010
0 to 0.5
Sulfur (S), % 0
0 to 0.0030
Tungsten (W), % 27 to 33
0