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).
Pin dimensions, Brinell hardness tests, and chemical analysis results.
| Identifier | ExFiles\Box 180\M1\7\ img003 | |
| Date | 1st September 1921 | |
| contd:- -2- Hal/LGSS. 9.21. ************** Pins. The pins are all 2.510" dia. and about .00025" out of round. We have taken a brinell reading of the webs. This comes out as follows:- No. of web. Brinell. 1 269 2 269 3 302 4 262 5 302 6 285 7 277 8 285. --------------- --------------- Analysis. Carbon. .50 Manganese .54 Chromium .92 Nickel 2.14 Silicon .23 Sulphur .032 Phosphorus .025. --------------- --------------- Hs.{Lord Ernest Hives - Chair} | ||