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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 16a
SUMMARY:Hot working tool steel with bainitic micro-structure
DESCRIPTION:Usually tool steels are used in quenched and tempered condition. Due to the phase transition from austenite to martensite and the volume change during the transformation controlling of distortion might be a challenge.  The end user demands for high hardness of the final tool leads to a poor machinability.
Engineering steels with bainitic structure are generally based due to economic reasons on a low alloying content, especially the carbon contend is rather low compared to tool steels. Bainitic steels require often a controlled cooling to get the desired micro structure and the maximum size to achieve a fully homogeneous bainitic structure is limited to dimension far below acceptable dimension of tool steels.
A new developed steel with focusing on a bainitic structure even for bigger dimensions shows a lower hardness at ambient temperature then conventional hot-working tool steels but with a lower temperature dependency. Therefor at service temperature the mechanical properties are comparable to established grades. Heat treatment is simplified by a simple austenitization and cooling process without special requirement on the cooling rate. Due to a generally lower cooling rate and lower hardness compared to a Q&T process the risk of cracking is reduced.
The abcence of a quench and tempering process in combination with low hardness at ambiant temperature whats good for machining leads a low CO2 foodprint of the process chain.
With the combination of good weldability and rather low hardness after rapid cooling this grade can also processed in additive manufacturing and is well suited for a hybrid process of conventional and additive manufacturing.

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DTSTART:20230614T153000
DTEND:20230614T155000
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