At first Hartmann should made the Bavarian S3/6 under license, this plan smashed and so a new locomotive was constructed: the Saxon XVIII, it had a three-cylinder superheated engine.
Until 1918 the Saxon machine factory at Chemnitz (formerly R. Hartmann) deliver 10 machines under serial numbers 3966 – 3975 to “sächsische Staatsbahn”, it gets the train numbers 196 – 205.
After 1945 all ten locomotives stay at “Reichsbahn Ost” (state railway east) and made its service under as BR 18.0 predominant at Saxon rapid train. As of 1963 the locomotives were withdrawed from circulation one after another.
- Saxon XVIII in green-red "Länderbahn"-painting, with brass-lanterns and bar-buffers
- DRG BR 18.0 in red-black "Reichsbahn"-painting, with brass plates and deflectors
- DR BR 18.0 in red-black "Reichsbahn"-painting, with nickel silver plates and deflectors