Ovako 100CrMo7-3 825B Steel, Q/T (bainite)

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Ovako 100CrMo7-3 825B Steel, Q/T (bainite)
Categories:	Metal; Ferrous Metal; Alloy Steel; Low Alloy Steel; Carbon Steel; High Carbon Steel
Material Notes:	General Information: Ovako 825 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. Through hardenability corresponding to a ring with approximately 30mm wall thickness (˜Ø50mm bar), quenched in oil Suitable for martensitic or banitic hardening Good machinability in soft annealed condition Good dimensional stabilityBQ-Steel: 825B – Standard825T - With a controlled low sulphur content to minimize the number of sulphide inclusions. Reduced carbon content and tighter chemical composition ranges IQ-Steel:825Q - Isotropic properties (IQ) and better fatigue strength due to higher cleanliness levels, and a finer size and distribution of non-metallic inclusions BQ-Steel:BQ-steel® is a bearing quality clean steel optimized for fatigue strength and is also ideal for new design solutions outside the bearing industry. IQ-Steel:IQ-Steel® is an isotropic quality ultra clean steel optimized for high fatigue strength under multi axial loading. Information provided by Ovako
Key Words:	A485 (B6)
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Physical Properties	Original Value	Comments

Density	7.80 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Rockwell C	59 @Thickness <=30.0 mm
Tensile Strength	2200 MPa @Thickness <=30.0 mm
Tensile Strength, Yield	>= 2000 MPa @Thickness <=30.0 mm
Modulus of Elasticity	210 GPa
Poissons Ratio	0.30
Shear Modulus	80.0 GPa

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00000200 - 0.00000250 ohm-cm

Thermal Properties	Original Value	Comments
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-K	Ambient temperature
Transformation Temperature	183 °C	MS
	750 °C	AC1
	750 °C	AC3

Component Elements Properties	Original Value	Comments
Carbon, C	0.93 - 1.05 %
Chromium, Cr	1.65 - 1.95 %
Iron, Fe	95.16 - 96.42 %	As Balance
Manganese, Mn	0.60 - 0.80 %
Molybdenum, Mo	0.20 - 0.35 %
Nickel, Ni	<= 0.25 %
Phosphorus, P	<= 0.025 %
Silicon, Si	0.20 - 0.40 %
Sulfur, S	0.0050 - 0.015 %

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NOVAKO051 / 234350

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