Grade 363 Molybdenum vs. EN 1.3558 Steel

Grade 363 molybdenum belongs to the otherwise unclassified metals classification, while EN 1.3558 steel belongs to the iron alloys. There are 16 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is grade 363 molybdenum and the bottom bar is EN 1.3558 steel.

Grade 363 Molybdenum EN 1.3558 (X75WCrV18-4-1) High-Temperature Bearing Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		310
Elastic (Young's, Tensile) Modulus, GPa		210

Poisson's Ratio		0.31
Poisson's Ratio		0.29

Shear Modulus, GPa		120
Shear Modulus, GPa		80

Tensile Strength: Ultimate (UTS), MPa		580 to 720
Tensile Strength: Ultimate (UTS), MPa		770

Thermal Properties

Latent Heat of Fusion, J/g		370
Latent Heat of Fusion, J/g		240

Specific Heat Capacity, J/kg-K		250
Specific Heat Capacity, J/kg-K		410

Thermal Expansion, µm/m-K		7.0
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		10
Density, g/cm³		9.3

Embodied Carbon, kg CO₂/kg material		28
Embodied Carbon, kg CO₂/kg material		8.4

Embodied Energy, MJ/kg		330
Embodied Energy, MJ/kg		130

Embodied Water, L/kg		360
Embodied Water, L/kg		90

Common Calculations

Stiffness to Weight: Axial, points		17
Stiffness to Weight: Axial, points		12

Stiffness to Weight: Bending, points		22
Stiffness to Weight: Bending, points		21

Strength to Weight: Axial, points		16 to 20
Strength to Weight: Axial, points		23

Strength to Weight: Bending, points		15 to 17
Strength to Weight: Bending, points		20

Thermal Shock Resistance, points		19 to 24
Thermal Shock Resistance, points		22

Alloy Composition

Carbon (C), %		0.010 to 0.030
Carbon (C), %		0.7 to 0.8

Chromium (Cr), %		0
Chromium (Cr), %		3.9 to 4.3

Copper (Cu), %		0
Copper (Cu), %		0 to 0.3

Iron (Fe), %		0 to 0.010
Iron (Fe), %		73.7 to 77.6

Manganese (Mn), %		0
Manganese (Mn), %		0 to 0.4

Molybdenum (Mo), %		99.3 to 99.5
Molybdenum (Mo), %		0 to 0.6

Nickel (Ni), %		0 to 0.0020
Nickel (Ni), %		0

Nitrogen (N), %		0 to 0.0020
Nitrogen (N), %		0

Oxygen (O), %		0 to 0.0030
Oxygen (O), %		0

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.025

Silicon (Si), %		0 to 0.010
Silicon (Si), %		0 to 0.4

Sulfur (S), %		0
Sulfur (S), %		0 to 0.015

Titanium (Ti), %		0.4 to 0.55
Titanium (Ti), %		0

Tungsten (W), %		0
Tungsten (W), %		17.5 to 19

Vanadium (V), %		0
Vanadium (V), %		1.0 to 1.3

Zirconium (Zr), %		0.060 to 0.12
Zirconium (Zr), %		0