Latrobe DuraTech™ A11 Powder Metal Tool Steel (AISI A11)

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Latrobe DuraTech™ A11 Powder Metal Tool Steel (AISI A11)
Categories:	Metal; Ferrous Metal; Alloy Steel; Carbon Steel; High Carbon Steel; Tool Steel; Air-Hardening Steel
Material Notes:	DuraTech A11 powder metal tool steel a versatile air-hardening tool and die steel which provides extremely high wear resistance in combination with relatively high impact toughness. A very large volume of hard vanadium carbides provides the high wear resistance. The good impact toughness is the result of the fine grain size, small carbides, and superior cleanliness of the powder metallurgy (PM) microstructure. DuraTech A11 offers substantially better wear resistance than the high-carbon, high chromium die steels such as D2 and D7. 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	7.41 g/cc
Density	0.267 lb/in³

Mechanical Properties	Original Value	Comments
Hardness, Rockwell C	63	Oil Quenched from 1177°C; 5 minutes
	65	Oil Quenched from 1121°C; 20 minutes
	65	Oil Quenched from 1066°C; 45 minutes
Modulus of Elasticity	32000 ksi
Machinability	35 - 40 %	1% Carbon Steel

Thermal Properties	Original Value	Comments
CTE, linear	10.71 µm/m-°C @Temperature 21.0 - 100 °C
	12.31 µm/m-°C @Temperature 21.0 - 538 °C

Processing Properties	Original Value	Comments
Processing Temperature	838 °C	Critical Temperaure Ac1

Component Elements Properties	Original Value	Comments
Carbon, C	2.45 %
Chromium, Cr	5.25 %
Iron, Fe	79.75 %
Manganese, Mn	0.50 %
Molybdenum, Mo	1.35 %
Silicon, Si	0.90 %
Vanadium, V	9.8 %

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NTIMK125 / 19472

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