Latrobe Tatmo-V™ AISI M7 High Speed Steel

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Latrobe Tatmo-V™ AISI M7 High Speed Steel
Categories:	Metal; Ferrous Metal; Alloy Steel; Carbon Steel; High Carbon Steel; Tool Steel
Material Notes:	Tatmo-V is an M7 grade high speed steel with superior abrasion resistance because of its high carbon and vanadium content. It is an excellent choice for premium grade tools which require an outstanding balance of red hardness, edge toughness, and wear resistance. Increased tool life of Tatmo-V is noted in the machining of semi-hard, heat treated steel parts. 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	7.95 g/cc	0.287 lb/in³	literature value

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	42 @Temperature 649 °C	42 @Temperature 1200 °F
	65 @Temperature 50.0 °C	65 @Temperature 122 °F
Izod Impact Unnotched	33.2 J	24.5 ft-lb	Oil Quenched at 1204°C; 482°C Temper Temperature
	38.0 J	28.0 ft-lb	Oil Quenched at 1204°C; 593°C Temper Temperature
	40.7 J	30.0 ft-lb	Oil Quenched at 1204°C; 622°C Temper Temperature
	40.7 J	30.0 ft-lb	Oil Quenched at 1177°C; 482°C Temper Temperature
	42.0 J	31.0 ft-lb	Oil Quenched at 1177°C; 593°C Temper Temperature
	46.1 J	34.0 ft-lb	Oil Quenched at 1177°C; 622°C Temper Temperature

Component Elements Properties	Metric	English	Comments
Carbon, C	1.0 %	1.0 %
Chromium, Cr	3.75 %	3.75 %
Iron, Fe	83.1 %	83.1 %
Molybdenum, Mo	8.55 %	8.55 %
Tungsten, W	1.6 %	1.6 %
Vanadium, V	2.0 %	2.0 %

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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NTIMK067 / 19414

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