USRA Heavy Santa Fe

**USRA Heavy Santa Fe**
Power type	Steam

Configuration	2-10-2
Gauge	4 ft 8½ in (1435 mm)
Leading wheel size	33 in (838 mm)
Trailing wheel size	43 in (1,092 mm)
Wheelbase	42 ft 2 in (12.85 m)
Length	55 ft 4 in (16.87 m) without tender
Width	10 ft 8 in (3.25 m)
Height	15 ft 9 in (4.80 m)
Weight on drivers	293,000 lb (133,000 kg)
Total weight	380,000 lb (172,000 kg)
Locomotive and tender combined weight	586,000 lb (266,000 kg)
Fuel type	Soft coal
Boiler pressure	190 lbf/in² (1.31 MPa)
Fire grate area	82.2 ft² (7.64 m²)
Heating surface: Tubes	3,258 ft² (302.68 m²)
Heating surface: Flues	1,469 ft² (136.47 m²)
Heating surface: Firebox	429 ft² (39.85 m²)
Heating surface: Total	5,156 ft² (479.01 m²)
Superheater area	1,230 ft² (114.27 m²)
Cylinders	2
Cylinder size	30×32 in (762×813 mm)
Valve gear	Walschaert valve gear
Tractive effort	74,000 lbf (329 kN)
Factor of adhesion	3.96

The USRA Heavy Santa Fe was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. These locomotives were of 2-10-2 wheel arrangement in the Whyte notation, or "1'E1'" in UIC classification; this arrangement was commonly named "Santa Fe" in the United States. At the time, the Santa Fe was the largest non-articulated type in common use, primarily in slow drag freight duty in ore or coal service.

A total of 175 of these locomotives were constructed under the auspices of the USRA. They went to the following railroads:

The Pennsylvania Railroad locomotives were later refitted with the Pennsy's trademark Belpaire fireboxes.