From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
The results of corrosion tests on various metals immersed in different types of oil.
| Identifier | ExFiles\Box 114\1\ scan0189 | |
| Date | 31th March 1939 guessed | |
| CORROSION TESTS. Test pieces immersed in oil @ 120°C., for a period of 24 hours. | Material. | GX. | Wakefield's Hi press. | Vacuum Hypoid. | Vacuum T.E.X | |---|---|---|---|---| | Phosphor Bronze. | 24 | 4.2 | 20 | 5.0 | | Aluminium Bronze. | 2.1 | 0.5 | 0.9 | 0.01 | | Mild Steel. | 0.12 | 0.007 | 0.004 | Very slight discoloration. | | Stainless Steel | 0.03 | Stain. | Stain. | Unaffected. | (4). | ||