Latrobe TNW™ ASTM M10 High Speed Steel

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Latrobe TNW™ ASTM M10 High Speed Steel
Categories:	Metal; Ferrous Metal; Alloy Steel; Carbon Steel; High Carbon Steel; Tool Steel
Material Notes:	TNW is an M10 type high speed steel with a composition that combines the high toughness of a high-molybdenum steel and the excellent wear resistance provided by the 2% vanadium content. TNW is popular for twist drills, reamers, taps, router bits, end mills and similar cutting tools. Its good toughness makes it well suited for punches and other cold work tools that require high hardness and wear resistance. 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	Original Value	Comments

Specific Gravity	7.89 g/cc
Density	0.285 lb/in³

Mechanical Properties	Original Value	Comments
Hardness, Rockwell C	40 @Temperature 650 °C	Oil Quenched from 1218°C; 566°C Double Temper Temperature
	60.5 @Temperature 316 °C	Oil Quenched from 1218°C; 566°C Double Temper Temperature
	65 @Temperature 22.0 °C	Oil Quenched from 1218°C; 566°C Double Temper Temperature
Modulus of Elasticity	30000 ksi
Machinability	50 - 55 %	1% Carbon Steel
Izod Impact Unnotched	35.0 ft-lb	Oil Quenched at 1218°C; 482°C Temper Temperature
	43.0 ft-lb	Oil Quenched at 1218°C; 566°C Temper Temperature
	44.0 ft-lb	Oil Quenched at 1218°C; 622°C Temper Temperature
	54.0 ft-lb	Oil Quenched at 1163°C; 482°C
	65.0 ft-lb	Oil Quenched at 1163°C; 622°C
	79.0 ft-lb	Oil Quenched at 1163°C; 594°C

Thermal Properties	Original Value	Comments
CTE, linear	10.79 µm/m-°C @Temperature 38.0 - 260 °C
	12.58 µm/m-°C @Temperature 38.0 - 649 °C

Processing Properties	Original Value	Comments
Processing Temperature	774 °C	Critical Temperaure Ar3
	804 °C	Critical Temperaure Ar1
	830 °C	Critical Temperaure Ac1
	857 °C	Critical Temperaure Ac3

Component Elements Properties	Original Value	Comments
Carbon, C	0.87 %
Chromium, Cr	4.0 %
Iron, Fe	84.63 %
Manganese, Mn	0.30 %
Molybdenum, Mo	8.0 %
Silicon, Si	0.30 %
Vanadium, V	1.9 %

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 go back to viewing the property data in MatWeb's normal format.

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NTIMK069 / 19416

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