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EN 1.4371 Stainless Steel vs. Grade 366 Molybdenum

EN 1.4371 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 (13, in this case) are not shown.

For each property being compared, the top bar is EN 1.4371 stainless steel and the bottom bar is grade 366 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
300
Elongation at Break, % 45 to 51
2.2
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 77
120
Tensile Strength: Ultimate (UTS), MPa 740 to 750
580
Tensile Strength: Yield (Proof), MPa 320 to 340
470

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Specific Heat Capacity, J/kg-K 480
210
Thermal Expansion, µm/m-K 17
7.6

Otherwise Unclassified Properties

Density, g/cm3 7.7
12
Embodied Carbon, kg CO2/kg material 2.6
27
Embodied Energy, MJ/kg 38
340
Embodied Water, L/kg 140
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 310
12
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 300
370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 27
13
Strength to Weight: Bending, points 24
13
Thermal Shock Resistance, points 16
18

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 16 to 17.5
0
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 66.7 to 74.4
0 to 0.010
Manganese (Mn), % 6.0 to 8.0
0
Molybdenum (Mo), % 0
66.9 to 73
Nickel (Ni), % 3.5 to 5.5
0 to 0.0020
Nitrogen (N), % 0.15 to 0.25
0 to 0.0020
Oxygen (O), % 0
0 to 0.0025
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0 to 0.010
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 0
27 to 33