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Ensinger PEI

Latrobe Graph-Mo® Cold Work Tool Steel (ASTM O6)
Categories: Metal; Ferrous Metal; Alloy Steel; Carbon Steel; High Carbon Steel; Tool Steel; Cold Work Steel; Oil-Hardening Steel

Material Notes: Graph-Mo tool steel is an oil-hardening, graphitic tool steel with outstanding resistance to metal-to-metal sliding wear and galling. The steel contains a uniform dispersion of graphite particles which impart excellent machinability and non-seizing characteristics. The graphite particles make the steel self-lubricating in dry environments, and help to retain oil in lubricated environments. Graph-Mo tool steel can be hardened to over 60 Rockwell C from a relatively low hardening temperature, which minimizes size change and distortion during heat treatment. Typical applications include thread gauges, master gages, cams, bushings, sleeves, meat granulator plates, arbors, forming rolls, shear blades, punches, dies, bar feed guides and other machine tool parts.

Information Provided by Timken Latrobe Steel.

Timken sold Latrobe in December 2006. They are now Latrobe Specialty Steels Co.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 7.70 g/cc7.70 g/cc
Density 7.70 g/cc0.278 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell C 6262Air Cooled from 774°C, 30 minutes
 6464Air Cooled from 871°C, 30 minutes
 65.565.5Air Cooled from 802°C, 30 minutes
Modulus of Elasticity 207 GPa30000 ksi
Machinability 130 %130 %1% Carbon Steel
Izod Impact Unnotched 27.1 J20.0 ft-lbOil Quenched from 788°C; 250°C Temper Temperature
 129 J95.0 ft-lbOil Quenched from 788°C; 538°C Temper Temperature
 
Thermal PropertiesMetricEnglishComments
CTE, linear  11.15 µm/m-°C
@Temperature 21.0 - 204 °C
6.194 µin/in-°F
@Temperature 69.8 - 399 °F
 12.94 µm/m-°C
@Temperature 21.0 - 538 °C
7.189 µin/in-°F
@Temperature 69.8 - 1000 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 1.45 %1.45 %
Iron, Fe 96.4 %96.4 %
Manganese, Mn 1.0 %1.0 %
Molybdenum, Mo 0.25 %0.25 %
Silicon, Si 0.90 %0.90 %

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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NTIMK116 / 19463

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