Editing 4-8-0 (section)

===Australia===
The {{nowrap|4-8-0}} wheel arrangement saw service in Australia from 1900. In [[Tasmania]], the privately owned [[Emu Bay Railway]] ordered four {{nowrap|4-8-0}} tender locomotives for their {{RailGauge|3ft6in|lk=on}} gauge system. In 1911, another locomotive was delivered from the [[North British Locomotive Company]].<ref name="NBL 2">North British Locomotive Company works list. (By J. Lambert)</ref> Two of these locomotives are preserved.<ref name="Oberg">Oberg, Leon. (1975). ''Locomotives of Australia''. Sydney, New South Wales: Reed. p. 157. {{ISBN|978-0-589-07173-8}}</ref>

[[File:T class-South Australia-1967.jpg|thumb|left|South Australian Railways T class]]
A new class of {{nowrap|4-8-0}} locomotive, the [[South Australian Railways T class|T class]], designed in South Australia for use on the narrow gauge {{RailGauge|3ft6in}} gauge system of the [[South Australian Railways]], was introduced in 1903. It proved to be a suitable workhorse and by 1917 there were 78 locomotives in the class. In 1921 and 1922, the Tasmanian Government also purchased six of these narrow gauge South Australian locomotives and, during 1922 and 1923, five of the class were converted to {{RailGauge|1600mm|lk=on|al=on}} gauge for use on the broad gauge system of the South Australian. These were converted back to narrow gauge in 1949. During the [[Second World War]], the [[Commonwealth Railways]] obtained four of these South Australian narrow gauge locomotives on loan. Several of these locomotives are preserved.<ref name="Oberg"/>

[[File:Gympie.jpg|thumb|[[Queensland C17 class locomotive|QGR C17 class]]]]
The [[Queensland Rail|Queensland Government Railways]] (QGR) introduced its [[Queensland C16 class locomotive|C16 class]] of {{nowrap|4-8-0}} locomotives in 1903, built at its [[List of Queensland steam locomotives#Ipswich workshops|Ipswich workshops]].<ref name="Oberg"/> Altogether 152 of these locomotives were in service by 1917. Beginning in 1920, a number of the QGR C16 class locomotives were equipped with superheaters on an experimental basis, but since their slide valves were not suited to superheated steam and became prone to steam leaks due to excessive wear, they were soon converted back to use saturated steam. During the Second World War, the Commonwealth Government also acquired eleven C16 class locomotives on loan. Only one example of this class was preserved.

The QGR's superheated [[Queensland C17 class locomotive|C17 class]] entered service from 1920. The Commonwealth Railways also ordered 22 locomotives of the same design for their narrow gauge rail system, designated the [[Commonwealth Railways NM class|NM class]]. In total, the C17 class eventually numbered 227 locomotives, of which twenty are preserved.

In 1922, the QGR ordered 22 new {{nowrap|4-8-0}} locomotives and designated them the [[Queensland C19 class locomotive|C19 class]]. They were the largest conventional-type locomotives to operate on the QGR.<ref name="Oberg"/>