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).
Concluding that Molybdenum steel is a safer choice for high-duty components like springs due to its advantages and lack of brittleness.
| Identifier | WestWitteringFiles\R\October1927-December1927\ Scan101 | |
| Date | 24th November 1927 | |
| FROM R.{Sir Henry Royce} C. to - ED.{J. L. Edwards} " MOR. " HS.{Lord Ernest Hives - Chair} MOLYBDENUM STEEL. X1474 Many thanks for your two letters re. high duty steels. We are very keen on Stanton figures when getting at best steel for con. rods, valve springs, etc. I conclude that Molybdenum steel has no disadvantages and has some advantages, so it ought not to be neglected, especially as springs of all sorts are in the above 80 ton state - i.e. it would appear a safer steel from brittleness. R.{Sir Henry Royce} | ||