Chromium 33 vs. EN 1.3558 Steel

Chromium 33 belongs to the otherwise unclassified metals classification, while EN 1.3558 steel belongs to the iron alloys. They have a modest 37% of their average alloy composition in common, which, by itself, doesn't mean much. There are 17 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 chromium 33 and the bottom bar is EN 1.3558 steel.

Chromium Alloy 33 (R20033)EN 1.3558 (X75WCrV18-4-1) High-Temperature Bearing Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		210

Poisson's Ratio		0.27
Poisson's Ratio		0.29

Shear Modulus, GPa		81
Shear Modulus, GPa		80

Tensile Strength: Ultimate (UTS), MPa		850
Tensile Strength: Ultimate (UTS), MPa		770

Thermal Properties

Latent Heat of Fusion, J/g		320
Latent Heat of Fusion, J/g		240

Specific Heat Capacity, J/kg-K		480
Specific Heat Capacity, J/kg-K		410

Thermal Expansion, µm/m-K		14
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Base Metal Price, % relative		36
Base Metal Price, % relative		45

Density, g/cm³		7.9
Density, g/cm³		9.3

Embodied Carbon, kg CO₂/kg material		6.0
Embodied Carbon, kg CO₂/kg material		8.4

Embodied Energy, MJ/kg		84
Embodied Energy, MJ/kg		130

Embodied Water, L/kg		250
Embodied Water, L/kg		90

Common Calculations

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		12

Stiffness to Weight: Bending, points		25
Stiffness to Weight: Bending, points		21

Strength to Weight: Axial, points		30
Strength to Weight: Axial, points		23

Strength to Weight: Bending, points		25
Strength to Weight: Bending, points		20

Thermal Shock Resistance, points		21
Thermal Shock Resistance, points		22

Alloy Composition

Carbon (C), %		0 to 0.015
Carbon (C), %		0.7 to 0.8

Chromium (Cr), %		31 to 35
Chromium (Cr), %		3.9 to 4.3

Copper (Cu), %		0.3 to 1.2
Copper (Cu), %		0 to 0.3

Iron (Fe), %		25.7 to 37.9
Iron (Fe), %		73.7 to 77.6

Manganese (Mn), %		0 to 2.0
Manganese (Mn), %		0 to 0.4

Molybdenum (Mo), %		0.5 to 2.0
Molybdenum (Mo), %		0 to 0.6

Nickel (Ni), %		30 to 33
Nickel (Ni), %		0

Nitrogen (N), %		0.35 to 0.6
Nitrogen (N), %		0

Phosphorus (P), %		0 to 0.020
Phosphorus (P), %		0 to 0.025

Silicon (Si), %		0 to 0.5
Silicon (Si), %		0 to 0.4

Sulfur (S), %		0 to 0.010
Sulfur (S), %		0 to 0.015

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

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