EN 1.3558 (X75WCrV18-4-1) High-Temperature Bearing Steel
Alloy Steels
Property Overview
Density9.3g/cm³
Elastic Modulus210GPa
Tensile Strength770MPa
Yield StrengthUnknown
Brinell Hardness230HB
Maximum Service Temperature490°C
Chemical Composition
C
0.7 to 0.8%
CR
3.9 to 4.3%
MO
0 to 0.6%
MN
0 to 0.4%
SI
0 to 0.4%
P
0 to 0.025%
S
0 to 0.015%
CU
0 to 0.3%
V
1.0 to 1.3%
W
17.5 to 19%
FE
73.7 to 77.6%
Mechanical
Elastic (Young's, Tensile) Modulus
210 GPa
Poisson's Ratio
0.29
Shear Modulus
80 GPa
Tensile Strength: Ultimate (UTS)
770 MPa
Hardness
Brinell Hardness
230
Physical
Density
9.3 g/cm 3
Thermal
Latent Heat of Fusion
240 J/g
Maximum Temperature: Mechanical
490 °C
Melting Completion (Liquidus)
1810 °C
Melting Onset (Solidus)
1760 °C
Specific Heat Capacity
410 J/kg-K
Thermal Conductivity
20 W/m-K
Thermal Diffusivity
5.3 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
22 points
Electrical
Electrical Conductivity: Equal Volume
13 % IACS
Electrical Conductivity: Equal Weight (Specific)
12 % IACS
Calculated
PREN (Pitting Resistance)
35
Stiffness to Weight: Axial
12 points
Stiffness to Weight: Bending
21 points
Strength to Weight: Axial
23 points
Strength to Weight: Bending
20 points
Environmental
Base Metal Price
45 % relative
Embodied Carbon
8.4 kg CO 2 /kg material
Embodied Energy
130 MJ/kg
Embodied Energy
130 MJ/kg 55 x 10 3 BTU/lb
Embodied Water
90 L/kg
Embodied Water
90 L/kg 11 gal/lb
Registered Designations & Aliases
1.3558EN 1.3558 (X75WCrV18-4-1) High-Temperature Bearing SteelX75WCrV18-4-1
Standards
ISO 683-17 ISO 683-17: Heat-treated steels, alloy steels and free-cutting steels - Part 17: Ball and roller bearing steels
ISO 683-17 ISO 683-17: Heat-treated steels, alloy steels and free-cutting steels - Part 17: Ball and roller bearing steels Steels: Processing, Structure, and Performance, 2nd ed., George Krauss, 2015