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).
Material composition analysis for mild steel cylinder jackets against company specification.
| Identifier | ExFiles\Box 76\3\ scan0076 | |
| Date | 9th September 1918 | |
| R.R. 26 (10M Bks.) (SE 591 13-3-18). M.P. 189358 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EH 9th Sept 1918 Order No. Customer's No. Suby- Re M.S. & cylinder jackets R.R. going thro' now | Gold Condor jacket C 0.06 | .15 Mn .39 | .42 Si .06 | .042 S .032 | .032 P .035 | .037 Samples from Mr Hives our specification for M.S. steel sheet C .03 to .10 Mn .20 to .40 Si max .07 S .04 P .04 Signed This Sheet must be filed on completion of the work. | ||