Ovako 40SiCrMnMo7-6-6* 477L Steel

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Ovako 40SiCrMnMo7-6-6* 477L Steel
Categories:	Metal; Ferrous Metal; Alloy Steel
Material Notes:	General Information: A medium carbon steel for quench and tempering steel with high hardenability. Ovako 477L has high tensile strength in combination with high toughness, and it is often used for large axles and machine parts. By using air– or gas-quenching it is possible to reduce the amount of quenching distortion. Additionally the use of quenching medias such as oil and salt may be avoided, which improves both safety and environment. The sulphur content is in a low and narrow range for consistent machinability. Suitable for nitriding Suitable for induction or flame hardening Through hardenability corresponding to a bar with approx 60mm diameter (cooling in still air) Provides low distortion Weldable under certain conditions Information provided by Ovako
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Physical Properties	Metric	English	Comments

Density	7.80 g/cc	0.282 lb/in³

Mechanical Properties	Metric	English	Comments
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	721 °C	1330 °F	AC1
	792 °C	1460 °F	AC3

Component Elements Properties	Metric	English	Comments
Carbon, C	0.38 - 0.42 %	0.38 - 0.42 %
Chromium, Cr	1.5 - 1.6 %	1.5 - 1.6 %
Iron, Fe	93.82 - 94.63 %	93.82 - 94.63 %	As Balance
Manganese, Mn	1.4 - 1.55 %	1.4 - 1.55 %
Molybdenum, Mo	0.43 - 0.47 %	0.43 - 0.47 %
Nickel, Ni	<= 0.30 %	<= 0.30 %
Phosphorus, P	<= 0.020 %	<= 0.020 %
Silicon, Si	1.65 - 1.8 %	1.65 - 1.8 %
Sulfur, S	0.012 - 0.020 %	0.012 - 0.020 %

Descriptive Properties
Weldability	CEV 1.15_max
	Pcm 0.7_max

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NOVAKO286 / 234585

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