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| Class: | 520 | |
| Builder: | South Australian Railways, Islington Workshops | |
| Wheel arrangement: | 4-8-4 (2′D2′ 3′3′) | |
| Number built: | 12 | |
| Driving wheels diameter: | 5 ft. 6 in. | |
| Cylinders: - No., diameter & stroke:: | 2 x 20½ in. x 28 in. | |
| Boiler pressure: | 215 lbs. | |
| Tractive effort: | 32,600 lb. | |
| Heating surfaces - tubes: | 2,163 sq ft. | |
| - | superheater: | 651 sq. ft. |
| - | firebox: | 291 sq. ft. |
| - | grate area: | 45 sq. ft. |
| Bunker capacity - coal: | 9 tons 15 cwt | |
| - | Oil: | 1,450 gallons + 5 tons coal |
| - | Water: | 9,100 gallons |
| Weight in working order: | 200 tons 13 cwt 2 qtr | |
| Maximum axle load: | 15 tons 16 cwt | |
| Overall length: | 87 ft. 4 in. | |
Note: When operating on 60-lb rail bunker capacity was reduced to 8,200 gallons water + 5 tons coal.
520-class 4-8-4 broad gauge steam locomotive built by South Australian Railways at the Islington Workshops.
| 6.11.1943 | On display at Adelaide Station. |
| 10.11.1943 | Entered service. Islington Works No.81 |
| - | Named Sir Malcolm Barclay-Harvey |
| 1958 | Stored. |
| 8.5.1964 | Returned to service. |
| 21.8.1969 | Condemned. |
| 1.5.1970 | Reinstated for special Australian Railway Historical Society tours working. |
| 16.4.1970 | Stored at Mile End Railway Museum. |
| 23.9.1970 | Moved alternative storage location. |
| 16.5.1972 | Returned to service for special tours. |
| - | To History Trust of South Australia. |
| - | To Australian Railway Historical Society (SteamRanger). |
520-class 4-8-4 broad gauge steam locomotive built by South Australian Railways at the Islington Workshops.
| 17.2.1944 | Entered service. Islington Works No.82 |
| - | Named Thomas Playford |
| 20.8.1968 | Withdrawn |
| 7.1.1970 | Sent to Islington for scrapping - Milage 611,913. |
| 7.3.1970 | Scrapped |
520-class 4-8-4 broad gauge steam locomotive built by South Australian Railways at the Islington Workshops.
| 19.4.1944 | Entered service. Islington Works No.83 |
| - | Named Malcolm Mcintosh |
| 20.8.1968 | Withdrawn |
| 15.1.1970 | Sent to Islington for scrapping - Milage 595,538. |
| 7.9.1970 | Scrapped |
520-class 4-8-4 broad gauge steam locomotive built by South Australian Railways at the Islington Workshops.
| 14.8.1944 | Entered service. Islington Works No.84 |
| - | Named Essington Lewis |
| 28.11.1968 | To Mile End Railway Museum - Milage 551,955. |
| 21.8.1969 | Withdrawn |
520-class 4-8-4 broad gauge steam locomotive built by South Australian Railways at the Islington Workshops.
| 24.11.1944 | Entered service. Islington Works No.85 |
| - | Named Sir Mellis Napier |
| 21.8.1969 | Withdrawn - Milage 554,566 |
| 21.8.1969 | Scrapped |
520-class 4-8-4 broad gauge steam locomotive built by South Australian Railways at the Islington Workshops.
| 22.2.1945 | Entered service. Islington Works No.86 |
| - | Named Sir Willoughby Norrie |
| 6.7.1961 | Withdrawn - Milage 463,335 |
| 11.8.1961 | Scrapped |
520-class 4-8-4 broad gauge steam locomotive built by South Australian Railways at the Islington Workshops.
| 28.6.1945 | Entered service. Islington Works No.87 |
| - | Named Dutchess of Gloucester |
| 24.4.1971 | Last run - to Riverton |
| 9.9.1971 | Withdrawn - Milage 508,170 |
| 1971 | Scrapped |
520-class 4-8-4 broad gauge steam locomotive built by South Australian Railways at the Islington Workshops.
| 20.12.1046 | Entered service. Islington Works No.88 |
| - | Named C. B. Anderson |
| 6.7.1961 | Withdrawn - Milage 411,516 |
| 24.5.1963 | Scrapped |
520-class 4-8-4 broad gauge steam locomotive built by South Australian Railways at the Islington Workshops.
| 9.6.1947 | Entered service. Islington Works No.89 |
| 6.7.1961 | Withdrawn - Milage 404,114 |
| 21.6.1963 | Scrapped |
520-class 4-8-4 broad gauge steam locomotive built by South Australian Railways at the Islington Workshops.
| 22.8.1947 | Entered service. Islington Works No.90 |
| 16.7.1963 | Withdrawn - Milage 412,605 |
| 18.1.1964 | Scrapped |
520-class 4-8-4 broad gauge steam locomotive built by South Australian Railways at the Islington Workshops.
| 1.11.1947 | Entered service. Islington Works No.91 |
| 9.7.1062 | Withdrawn - Milage 386,323 |
| 24.9.1963 | Scrapped |
520-class 4-8-4 broad gauge steam locomotive built by South Australian Railways at the Islington Workshops.
| 19.12.1947 | Entered service. Islington Works No.92 |
| 9.7.1962 | Withdrawn - Milage 380,145 |
| 13.8.1963 | Scrapped |