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EN 1.4378 Stainless Steel vs. Grade 365 Molybdenum

EN 1.4378 stainless steel belongs to the iron alloys classification, while grade 365 molybdenum belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.4378 stainless steel and the bottom bar is grade 365 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
310
Elongation at Break, % 14 to 34
6.3
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 77
120
Tensile Strength: Ultimate (UTS), MPa 760 to 1130
620
Tensile Strength: Yield (Proof), MPa 430 to 970
530

Thermal Properties

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

Otherwise Unclassified Properties

Density, g/cm3 7.6
10
Embodied Carbon, kg CO2/kg material 2.7
28
Embodied Energy, MJ/kg 39
330
Embodied Water, L/kg 150
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 220
37
Resilience: Unit (Modulus of Resilience), kJ/m3 470 to 2370
450
Stiffness to Weight: Axial, points 14
17
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 28 to 41
17
Strength to Weight: Bending, points 24 to 31
16
Thermal Shock Resistance, points 16 to 23
21

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.010
Chromium (Cr), % 17 to 19
0
Iron (Fe), % 61.2 to 69
0 to 0.010
Manganese (Mn), % 11.5 to 14.5
0
Molybdenum (Mo), % 0
99.9 to 100
Nickel (Ni), % 2.3 to 3.7
0 to 0.0020
Nitrogen (N), % 0.2 to 0.4
0 to 0.0020
Oxygen (O), % 0
0 to 0.0015
Phosphorus (P), % 0 to 0.060
0
Silicon (Si), % 0 to 1.0
0 to 0.010
Sulfur (S), % 0 to 0.030
0