Sloss-Sheffield Steel & Iron Company 2-8-0 "Consolidation" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 25 (Locobase 15485)

Data from DeGolyer, Vol 80, pp. 168+. See also the GhostSoliders website entry on "Sloss Furnaces" at, last accessed 14 October 2013; "Great Iron Combination", New York Times (14 August 1899); and Alex Lichtenstein, "'Through the Rugged Gates of the Penitentiary':Conflict Labor and Southern Coal", in Melvyn Stokes and Rick Halpern (eds), Race and Class in the American South Since 1890 (Providence, RI: Berg Publishers, 1994), pp. 3-42, esp. p 40.. Works numbers were 58410-58411 in May 1925 and 60388 in February 1928..

This design repeated the dimensions and weights of a set of superheated Consolidations sold to the Norfolk Southern in 1922 (Locobase 4949). Birmingham, Ala's SSISC was created in 1899 when the Sloss Iron & Steel Company merged with the Sheffield Steel & Iron Company. The intent was to pursue the development of a steel-making company--which it never did because the raw materials in the area simply weren't good enough to efficiently transform iron to steel.

On the other hand, its pig iron is described as exceptional, so it supplied local and regional pipe foundries (e.g.). A portion of the SSISC's mining work force consisted of local convicts supplied under the convict-lease system that was a common feature of much of industrialized Alabama from 1875 that persisted until a 1928 law ended it. (Sloss-Sheffield probably followed Tennessee Coal & Iron's lead and stopped using convicts well before that time.)

The design had 12" (305 mm) piston valves and 23 sq ft (2.15 sq m) of arch tubes contributed to firebox heating surface area.

When SSSIC began replacing steam with diesel, they returned to Baldwin in 1949 for small diesels.

Specifications by Steve Llanso of Sweat House Media
Locobase ID15485
RailroadSloss-Sheffield Steel & Iron Company
Number in Class3
Road Numbers25-27
Number Built3
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase16'
Engine Wheelbase24.50'
Ratio of driving wheelbase to overall engine wheebase 0.65
Overall Wheelbase (engine & tender)57.85'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers168000 lbs
Engine Weight191500 lbs
Tender Light Weight141000 lbs
Total Engine and Tender Weight332500 lbs
Tender Water Capacity7000 gals
Tender Fuel Capacity (oil/coal)12 tons
Minimum weight of rail (calculated)70 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter57"
Boiler Pressure200 psi
Cylinders (dia x stroke)22" x 28"
Tractive Effort40418 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.16
Heating Ability
Firebox Area182 sq. ft
Grate Area46.70 sq. ft
Evaporative Heating Surface2288 sq. ft
Superheating Surface528 sq. ft
Combined Heating Surface2816 sq. ft
Evaporative Heating Surface/Cylinder Volume185.73
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation9340
Same as above plus superheater percentage11115
Same as above but substitute firebox area for grate area43316
Power L112261
Power MT643.59

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