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).
Laboratory analysis of the chemical composition of Firth's Ball-race steel.
| Identifier | ExFiles\Box 76\3\ scan0031 | |
| Date | 29th January 1918 | |
| R.R. 663. (1 doz.) (SD. 185. 8-2-17.) Bm. 2/125/17. ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Experimental Dept Mr Hives. Customer's No. Laboratory Re Firths Ball-race steel. rec'd in Lab. 28-1-18 Carbon = .91 Manganese = .34 Phosphorus = .037 Chromium = 1.30 This steel should do for the purpose Signed HCSH This Sheet must be filed on completion of the work | ||