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).
Letter to a supplier requesting the steel specification for large coil springs after a test failure revealed an unexpected material.
| Identifier | ExFiles\Box 95\3\ scan0190 | |
| Date | 16th December 1935 | |
| X346 Exptl. Dept. Hs{Lord Ernest Hives - Chair}/Les.14/KW. 16th December, 1935. Messrs. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Salter Ltd., West Bromwich, Birmingham. Dear Sirs, Can you please let us have the complete steel specification used for our large coil springs such as G.83270/1, G.83692, G.83698 etc ? We wre under the impression that these were made from your special high carbon steel, however upon testing one of your springs which has failed, we find the material is Silico-Manganese steel. It is very important that we should know the type of steel whilst we are carrying out comparative tests. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||