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Ovako 100CrMo7-4 826B Steel, Q/T (bainite)
Categories: Metal; Ferrous Metal; Alloy Steel; Low Alloy Steel; Carbon Steel; High Carbon Steel

Material Notes: General Information: Ovako 826 is a through hardening bearing steel that is mainly used for medium sized bearing rings, but it can also be used for machine components that require high tensile strength, hardness and toughness.
826B - Bearing quality (BQ) variant
  • Through hardenability corresponding to a ring with approximately 50mm wall thickness (˜Ø80mm bar), quenched in oil
  • Suitable for martensitic or banitic hardening
  • Good machinability in soft annealed condition
  • Good dimensional stability
BQ-Steel:(Bearing Quality) is a bearing quality clean steel optimized for fatigue strength by a strict control of steel cleanliness. BQ-steel is also ideal for new design solutions in a wide array of demanding applications outside the bearing industry that require longer performance and higher loads. The BQ steel offer is the result of the Ovako clean steel program. Purity of production means that the material has significantly smaller inclusions compared to conventional steel and, as a result, the fatigue strength of the steel is increased dramatically. Use of the material allows components to be manufactured in smaller sizes. The BQ-steel has for decades been the problem-solver.

Information provided by Ovako

Key Words: A485 (B7)
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Density 7.80 g/cc
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell C 59
@Thickness <=50.0 mm
Tensile Strength 2200 MPa
@Thickness <=50.0 mm
Tensile Strength, Yield >= 2000 MPa
@Thickness <=50.0 mm
Modulus of Elasticity 210 GPa
Poissons Ratio 0.30
Shear Modulus 80.0 GPa
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000200 - 0.00000250 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 12.0 µm/m-°C
@Temperature 20.0 - 300 °C
Specific Heat Capacity 0.460 - 0.480 J/g-°C
@Temperature 50.0 - 100 °C
Thermal Conductivity 40.0 - 45.0 W/m-KAmbient temperature
Transformation Temperature 233 °CMS
 750 °CAC1
 750 °CAC3
 
Component Elements PropertiesOriginal ValueComments
Carbon, C 0.93 - 1.05 %
Chromium, Cr 1.56 - 1.95 %
Iron, Fe 95.06 - 96.26 %As Balance
Manganese, Mn 0.60 - 0.80 %
Molybdenum, Mo 0.40 - 0.50 %
Nickel, Ni <= 0.25 %
Phosphorus, P <= 0.025 %
Silicon, Si 0.25 - 0.35 %
Sulfur, S 0.0050 - 0.015 %

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NOVAKO060 / 234359

Rulon Bearings

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