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EN 1.4849 Stainless Steel vs. Grade 366 Molybdenum

EN 1.4849 stainless steel belongs to the iron alloys classification, while grade 366 molybdenum belongs to the otherwise unclassified metals. There are 20 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 EN 1.4849 stainless steel and the bottom bar is grade 366 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
300
Elongation at Break, % 4.5
2.2
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 75
120
Tensile Strength: Ultimate (UTS), MPa 480
580
Tensile Strength: Yield (Proof), MPa 250
470

Thermal Properties

Latent Heat of Fusion, J/g 320
310
Specific Heat Capacity, J/kg-K 480
210
Thermal Expansion, µm/m-K 15
7.6

Otherwise Unclassified Properties

Density, g/cm3 8.0
12
Embodied Carbon, kg CO2/kg material 7.1
27
Embodied Energy, MJ/kg 100
340
Embodied Water, L/kg 200
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18
12
Resilience: Unit (Modulus of Resilience), kJ/m3 160
370
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 17
13
Strength to Weight: Bending, points 17
13
Thermal Shock Resistance, points 11
18

Alloy Composition

Carbon (C), % 0.3 to 0.5
0 to 0.030
Chromium (Cr), % 18 to 21
0
Iron (Fe), % 32.6 to 43.5
0 to 0.010
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 0.5
66.9 to 73
Nickel (Ni), % 36 to 39
0 to 0.0020
Niobium (Nb), % 1.2 to 1.8
0
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.0025
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 1.0 to 2.5
0 to 0.010
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0
27 to 33