The SIEBER company was founded by Karl Sieber on 22 April 1950 as a one-man business in Hamburg to provide engineering services for the cold forging sector.

 

The basis of the company was the reinforcement calculation process for extrusion dies and other concepts developed by Karl Sieber, where he proved that it was possible to use cold forging on an industrial scale and provide economic benefits.

 

The start of tool production was an important step in the company’s ongoing development and a cooperation agreement was signed with the leading die manufacturer Pelzer & Ehlers (now Wafios Konzern) in 1955. As a result of the growth of the company, a new factory was built in Stettiner Strasse in Norderstedt in 1962 and the company headquarters were moved there.

 

SIEBER received a patent for cold forging trimming punches in 1965.

 

The business expanded in 1968 when it bought up the Albert Stech company in Hamburg.

 

Further growth led to the construction of business premises in Hitzacker in 1971; the major focus there was on producing rotationally symmetric extrusion dies.

 

A variety of orders from the USA led to the founding of Sieber Tool Engineering in Carol Stream near Chicago in 1978.

 

A further stage in the company’s development took place in 1981 with the purchase of the Eurotool company in Bad Münstereifel.

 

During the same year, Sieber received legal protection for a utility model for dies with a slit intermediate bush.

 

Following the death of the company founder on 18 June 1983, his son Karl Christoph Sieber took over as managing director. The company moved from Norderstedt and Kaltenkirchen to the newly constructed factory in Henstedt-Ulzburg in 1991. The new factory became the company’s headquarters.

 

Christopher Karl Sieber and Frank Sieber were the third generation of the family to join the management team in 1996 and they took over the shares in the company after the death of Karl Christoph Sieber on 10 June 2000.

 

The subsidiaries Eurotool and Albert Stech were integrated in Sieber Forming Solutions GmbH in 2003 as part of a reorganization under company law.

SIEBER was sold to AUTANIA AG in October 2004 and was integrated in the new company network.   

 

Legal protection for a utility model for a head extrusion die made of carbide was issued in 2008. Applications have been made for two other patents for forging screw threads on solid or hollow parts.