Specification sheet detailing the material composition percentages for Flap Valve & Bushes and Spindle parts.
| Identifier | ExFiles\Box 124\3\ scan0306 | |
| Date | 25th January 1935 guessed | |
| SPECIFICATION OF MATERIAL (%) | Part | Carbon. | Manganese | Max. Phos. | Max. Sulphur | Silicon | Nickel | Chromium. | |---|---|---|---|---|---|---|---| | Flap Valve & Bushes | .10 Max. | .30-.60 | .030 | .030 | .75-1.25 | - | 15.0-18.0 | | Spindle | .25-.45 | .50-.80 | .030 | .030 | - | 18.50-21.50 | 7.0-9.0 | | ||
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).