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

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Ovako 100CrMo7-3 825T 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	Metric	English	Comments

Density	7.80 g/cc	0.282 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	59 @Thickness <=30.0 mm	59 @Thickness <=1.18 in
Tensile Strength	2200 MPa @Thickness <=30.0 mm	319000 psi @Thickness <=1.18 in
Tensile Strength, Yield	>= 2000 MPa @Thickness <=30.0 mm	>= 290000 psi @Thickness <=1.18 in
Modulus of Elasticity	210 GPa	30500 ksi
Poissons Ratio	0.30	0.30
Shear Modulus	80.0 GPa	11600 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000200 - 0.00000250 ohm-cm	0.00000200 - 0.00000250 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	12.0 µm/m-°C @Temperature 20.0 - 300 °C	6.67 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.460 - 0.480 J/g-°C @Temperature 50.0 - 100 °C	0.110 - 0.115 BTU/lb-°F @Temperature 122 - 212 °F
Thermal Conductivity	40.0 - 45.0 W/m-K	278 - 312 BTU-in/hr-ft²-°F	Ambient temperature
Transformation Temperature	183 °C	361 °F	MS
	750 °C	1380 °F	AC1
	750 °C	1380 °F	AC3

Component Elements Properties	Metric	English	Comments
Carbon, C	0.93 - 1.02 %	0.93 - 1.02 %
Chromium, Cr	1.74 - 1.85 %	1.74 - 1.85 %
Iron, Fe	95.3 - 96.02 %	95.3 - 96.02 %	As Balance
Manganese, Mn	0.73 - 0.80 %	0.73 - 0.80 %
Molybdenum, Mo	0.25 - 0.35 %	0.25 - 0.35 %
Nickel, Ni	<= 0.25 %	<= 0.25 %
Phosphorus, P	<= 0.025 %	<= 0.025 %
Silicon, Si	0.33 - 0.40 %	0.33 - 0.40 %
Sulfur, S	0.0030 - 0.0080 %	0.0030 - 0.0080 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

NOVAKO054 / 234353

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