Opening of the DEUTSCHE EDELSTAHLWERKE (DEW) heat treatment shop for tools in Nuremberg

Opening of the EDELSTAHLWERKE WITTEN AG (ESW) heat treatment shop for tools in Nuremberg

Merger of DEW and ESW to form THYSSEN EDELSTAHL-WERKE AG at the current Nuremberg site

Beginning of PVD coating in Nuremberg and simultaneous founding of H-O-T hardening and surface technology as a division of THYSSEN EDELSTAHLWERKE in Germany and abroad

H-O-T Thyssen Edelstahlwerke is expanded with the foundation of the Service Centre in SCHMÖLLN, Thuringia

Management buy-out of H-O-T from THYSSEN STAHL AG by Dipl.-Ing. Jürgen Bach, Managing Partner, to become H-O-T GmbH & Co. KG

Dipl.-Phys. Frank-Peter Bach also becomes a managing partner

H-O-T is expanded with the foundation of the Service Centre WERL, near Dortmund

H-O-T is expanded with the foundation of the Service Centre ALBERSHAUSEN, near Stuttgart

Acquisition of WOLF HÄRTETECHNIK GMBH and foundation of EB-HÄRTETECHNIK

H-O-T is expanded with the foundation of the H-O-T Tribotechnik GmbH & Co. KG Service Centre BUTTENHEIM, located between Nuremberg and Bamberg

Foundation of H-O-T Plant Engineering on Gundelfinger Straße in Nuremberg
Launch of H-O-T Coating Center in Bursa (Turkey)

Opening of the H-O-T-Center Allgäu in Memmingerberg

Expansion of H-O-T Tribotechnik GmbH & Co. KG in Buttenheim

New building at H-O-T Plant Engineering on Gundelfinger Straße in Nuremberg

Still in business aged 75. Our senior boss celebrates his birthday.

Commissioning of the H-O-T vacuum furnaces with the possibility of helium quenching

H-O-T takes over Härtetechnik Fellbach

Opening of a new H-O-T Coating Center on Gundelfinger Straße in Nuremberg

Opening of th new H-O-T Coating Center in Schmölln, Industriering 5

H-O-T übernimmt die HWH-Härtetechnik Witten – diese wird zu HWH Härte- und Oberflächentechnik

H-O-T übernimmt die H+W Härte- und Werkstofftechnik GmbH – diese wird zur H+W Härte- und Oberflächentechnik Eppingen GmbH & Co. KG

H-O-T übernimmt die H+W Arnstadt GmbH – diese wird zur H+W Härte- und Oberflächentechnik Arnstadt GmbH & Co. KG