Ovako 100CrMnSi6-4 5625/837Z Steel

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Ovako 100CrMnSi6-4 5625/837Z Steel
Categories:	Metal; Ferrous Metal; Alloy Steel; Low Alloy Steel; Carbon Steel; High Carbon Steel
Material Notes:	General Information: Ovako 837 is a through hardening bearing steel that is mainly used for medium sized bearing rings, but can also be used for machine components that require high tensile strength and high hardness. 30 mm maximum wall thickness for through hardening Used for martensitic hardening Can be induction hardened Good machinability in soft annealed condition Machinable in hardened condition using hard-turning techniques (CBN tools) Very good dimension stability 837R - Bearing quality (BQ) variant 837S - Variant with a controlled high sulphur content for enhanced low speed machining 5625 / 837Z - A continuous cast variant 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. Information provided by Ovako
Key Words:	A485 (B3), 100 CM 6
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Physical Properties	Metric	English	Comments

Density	7.80 g/cc	0.282 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	180 - 220 @Thickness 40.0 - 120 mm	180 - 220 @Thickness 1.57 - 4.72 in	+A
	<= 400 @Thickness 40.0 - 120 mm	<= 400 @Thickness 1.57 - 4.72 in	+AR
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	229 °C	444 °F	MS
	750 °C	1380 °F	AC1
	750 °C	1380 °F	AC3

Component Elements Properties	Metric	English	Comments
Carbon, C	0.93 - 1.05 %	0.93 - 1.05 %
Chromium, Cr	1.4 - 1.65 %	1.4 - 1.65 %
Iron, Fe	95.02 - 96.17 %	95.02 - 96.17 %	As Balance
Manganese, Mn	1.0 - 1.2 %	1.0 - 1.2 %
Molybdenum, Mo	<= 0.10 %	<= 0.10 %
Nickel, Ni	<= 0.25 %	<= 0.25 %
Phosphorus, P	<= 0.025 %	<= 0.025 %
Silicon, Si	0.50 - 0.70 %	0.50 - 0.70 %
Sulfur, S	<= 0.0080 %	<= 0.0080 %

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NOVAKO041 / 234340

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