Prussian G 12
| Prussia, Alsace-Lorraine, Baden, Württemberg G 12 Saxon XIII H (1919 version) DRG Class 58.2–5/10–21 ÖBB Class 658 PKP Class Ty1 SNCF 150 C |
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DR 58 261 in Potsdam (1993)
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| Number(s) | DRG 58 201–225, 231–272, 281–303, 311–318, 401–462, 501–543, 1002–2148 |
| Quantity | 1,478 |
| Manufacturer | Henschel and others |
| Year(s) of manufacture | 1917–1924 |
| Retired | 1976 |
| Axle arrangement | 1'E h3 |
| Type | G 56.17 |
| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) |
| Length over buffers | 18,495 mm (60 ft 8.1 in) |
| Service weight | 95.7 t |
| Adhesive weight | 82.5 t |
| Axle load | 16.7 t |
| Top speed | 65 km/h (40 mph) |
| Indicated Power | 1,133 kW |
| Driving wheel diameter | 1,400 mm (4 ft 7 in) |
| Leading wheel diameter | 1,000 mm (39 in) |
| Cylinder bore | 570 mm (22 in) |
| Piston stroke | 660 mm (26 in) |
| Boiler Overpressure | 14 bar |
| Grate area | 3.88 m2 (41.8 sq ft) |
| Superheater area | 68.42 m2 (736.5 sq ft) |
| Evaporative heating area | 192.43 m2 (2,071.3 sq ft) |
| Tender | Prussian 3 T 20, Prussian 2'2' T 31,5, Saxon 3 T 21 |
| Water capacity | 20.0/21.0/31.5 m3 |
The Prussian G 12 was a 2-10-0 goods train locomotive with the Prussian state railways (Preußische Staatseisenbahnen).
It was built because it had been shown during the First World War that it was a great disadvantage, from a servicing and maintenance point of view, for each state railway to have its own locomotive classes with no standardization. In addition, the military railways needed a fast, powerful, goods train locomotive, that did not, however, have a high axle load.
The G 12 was based on the Prussian G 12.1 and a 2-10-0 locomotive built for the Imperial Ottoman Department for Military Railways (Kaiserlich Ottomanische Generaldirektion der Militäreisenbahnen or C.F.O.A.) by Henschel (see Prussian G 12 (C.F.O.A)).
The locomotives differed in several points from earlier principles for Prussian locomotive design. Firstly they had a continuous bar frame and a wide, outer, Belpaire firebox located above the frame with a large grate area.
Between August 1917 and 1921, a total of 1,168 G 12s were procured by Prussia. The Imperial Railways in Alsace-Lorraine ordered 118, the Grand Duchy of Baden State Railway 88, the Royal Saxon State Railways 42 and the Royal Württemberg State Railways 42 engines. In addition, Baden bought 10 locomotives from the Prussian state railways. Even the Deutsche Reichsbahn receive a batch of 20 locomotives in 1924 that, following the Saxon XIII H, were given the numbers 58 443-462.
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