Steel tempering
for renewable energymilitaryautomotive

steel tempering
steel tempering
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Characteristics

Treated material
steel
Applications
for renewable energy, military, automotive, for the aerospace industry, for the nuclear industry, for electronics, for the maritime sector, for aeronautics, medical, agriculture, for railway, for the food industry, chemistry, for telecommunications, for the construction industry
Certifications
ISO 9001, ISO 14001, ISO/TS 16949, OHSAS 18001
Production method
small series, medium series

Description

Tempering Tempering is a low temperature (below A1) heat treatment process normally performed after neutral hardening, double hardening, atmospheric carburising, carbonitriding or induction hardening in order to reach a desired hardness/toughness ratio. Benefits The maximum hardness of a steel grade, which is obtained by hardening, gives the material a low toughness. Tempering reduces the hardness in the material and increases the toughness. Through tempering you can adapt materials properties (hardness/toughness ratio) to a specified application. Application & materials Tempering can be divided into three main groups: Low temperature (160-300°C): used for case hardening components and cold working tool steels. Typically, hardness requirement is around 60 HRC. Tempering of spring steels (300-500°C): used for spring steels or similar applications. Typically, hardness requirement is around 45 HRC. High temperature (500°C or higher): used for quenched and tempered steels, hot working tool steels and high speed steel. The hardness will vary from 300HB to 65HRC dependent on the material. Process details The tempering temperature may vary, depending on the requirements and the steel grade, from 160°C to 500°C or higher. Tempering is normally performed in furnaces which can be equipped with a protective gas option. Protective gas will prevent the surface from oxidation during the process and is mainly used for higher temperatures. For some types of steels the holding time at the tempering temperature is of great importance;

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