FS Class 625

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "FS Class 625" – news · newspapers · books · scholar · JSTOR (September 2015) (Learn how and when to remove this message)

FS Class 625
Locomotive 625 017
Type and origin Power type Steam Builder Gio. Ansaldo & C., Costruzioni Meccaniche di Saronno, Berliner Maschinenbau Build date 1914–1923 Total produced 188 Number rebuilt 153
Specifications Configuration: ​  • UIC 1′C h2 Gauge 1,435 mm (4 ft 8+1⁄2 in) standard gauge Leading dia. 840 mm (33.07 in) Driver dia. 1,510 mm (59.45 in) Length 9.66 m (31 ft 8+3⁄8 in) Axle load 14.4 tonnes (14.2 long tons; 15.9 short tons) Loco weight 53.9 tonnes (53.0 long tons; 59.4 short tons) Tender weight 31.9 tonnes (31.4 long tons; 35.2 short tons) Fuel type Coal Fuel capacity 6,000 kg (13,000 lb) Water cap. 12,000 L (2,600 imp gal; 3,200 US gal) Firebox: ​  • Grate area 2.42 m2 (26.0 sq ft) Boiler pressure 12 kgf/cm2 (1.18 MPa; 171 psi) Heating surface 108.5 m2 (1,168 sq ft) Superheater: ​  • Heating area 33.5 m2 (361 sq ft) Cylinders Two, inside Cylinder size 490 mm × 700 mm (19.29 in × 27.56 in) Valve gear Walschaerts, Caprotti
Performance figures Maximum speed 80 km/h (50 mph) Power output 800 CV (590 kW; 790 hp) Tractive effort 10,200 kgf (100 kN; 22,500 lbf)

The Ferrovie dello Stato (FS, Italian State Railways) Class 625 (Italian: Gruppo 625) is a class of 2-6-0 'mogul' steam locomotives in Italy. The class is commonly known by the nickname Signorine (Italian for 'young ladies', also shared with the similar Class 640 locomotives),^[1] or Signorina in the singular, because of their perceived grace and beauty compared to other locomotives.