Latrobe CBS-600™ VIM-VAR Carburizing Bearing and Gear Steel

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Latrobe CBS-600™ VIM-VAR Carburizing Bearing and Gear Steel
Categories:	Metal; Ferrous Metal; Alloy Steel; Carbon Steel; High Carbon Steel
Material Notes:	CBS-600 VIM-VAR is a carburizing bearing and gear steel designed for service temperatures up to 600°F. Double vacuum melting is employed to provide optimum tensile properties as well as describe impact and fracture toughness characteristics. Information Provided by Timken Latrobe Steel. Timken sold Latrobe in December 2006. They are now Latrobe Specialty Steels Co.
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Physical Properties	Metric	English	Comments

Density	7.81 g/cc	0.282 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	37	37	Core at 700°F, 1000hr
	38	38	Core at 300°F, 100hr
	58	58	Case at 600°F, 1000hr
	62	62	Case at 300°F, 1000hr
Tensile Strength, Ultimate	1403 MPa	203500 psi	371°C Test Temp; 843°C Hardening Temp
	1422 MPa	206200 psi	371°C Test Temp; 927°C Hardening Temp
	1520 MPa	220000 psi	24°C Test Temp
Tensile Strength, Yield	1250 MPa @Strain 0.2 %	181000 psi @Strain 0.2 %	24°C Test Temp; 927°C Hardening Temp
	1265 MPa @Strain 0.2 %	183500 psi @Strain 0.2 %	24°C Test Temp; 843°C Hardening Temp
	965 MPa @Strain 0.2 %, Temperature 371 °C	140000 psi @Strain 0.2 %, Temperature 700 °F	843°C Hardening Temp
	1020 MPa @Strain 0.2 %, Temperature 371 °C	148000 psi @Strain 0.2 %, Temperature 700 °F	927°C Hardening Temp
Elongation at Break	11.4 %	11.4 %	24°C Test Temp; 843°C Hardening Temp
	12.5 %	12.5 %	24°C Test Temp; 927°C Hardening Temp
	17.5 % @Temperature 371 °C	17.5 % @Temperature 700 °F	843°C Hardening Temp
	18.2 % @Temperature 371 °C	18.2 % @Temperature 700 °F	927°C Hardening Temp
Reduction of Area	43.5 %	43.5 %	after 843°C Hardening Temp
	54.9 %	54.9 %	after 927°C Hardening Temp
	53.6 % @Temperature 371 °C	53.6 % @Temperature 700 °F
Modulus of Elasticity	210 GPa	30500 ksi
	172 GPa @Temperature 550.0 °C	24900 ksi @Temperature 1022 °F
Poissons Ratio	0.292 @Temperature 20.0 °C	0.292 @Temperature 68.0 °F
	0.309 @Temperature 550.0 °C	0.309 @Temperature 1022 °F
Shear Modulus	64.1 GPa @Temperature 538 °C	9300 ksi @Temperature 1000 °F
	81.70 GPa @Temperature 20.0 °C	11850 ksi @Temperature 68.0 °F

Thermal Properties	Metric	English	Comments
CTE, linear	12.7 µm/m-°C @Temperature 21.0 - 204 °C	7.06 µin/in-°F @Temperature 69.8 - 399 °F	0.20%C
	12.8 µm/m-°C @Temperature 21.0 - 427 °C	7.11 µin/in-°F @Temperature 69.8 - 801 °F	0.20%C
Specific Heat Capacity	0.494 J/g-°C @Temperature 20.0 °C	0.118 BTU/lb-°F @Temperature 68.0 °F
	0.695 J/g-°C @Temperature 550.0 °C	0.166 BTU/lb-°F @Temperature 1022 °F
Thermal Conductivity	33.9 W/m-K @Temperature 550.0 °C	235 BTU-in/hr-ft²-°F @Temperature 1022 °F
	48.6 W/m-K @Temperature 20.0 °C	337 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Maximum Service Temperature, Air	316 °C	600 °F

Processing Properties	Metric	English	Comments
Processing Temperature	729 °C	1340 °F	Case Ac1 Critical Temperaure Ar3
	729 °C	1340 °F	Core Ac1 Critical Temperaure Ar3
	802 °C	1480 °F	Case Ac3 Critical Temperaure Ar3
	885 °C	1630 °F	Core Ac3 Critical Temperaure Ar3

Component Elements Properties	Metric	English	Comments
Aluminum, Al	0.060 %	0.060 %
Carbon, C	0.19 %	0.19 %
Chromium, Cr	1.45 %	1.45 %
Iron, Fe	95.6 %	95.6 %
Manganese, Mn	0.60 %	0.60 %
Molybdenum, Mo	1.0 %	1.0 %
Silicon, Si	1.1 %	1.1 %

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.

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NTIMK006 / 19354

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