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 The Northern Aluminium Co. Ltd. inquiring about the properties of their 'Lo-Ex' Piston aluminium alloy.
| Identifier | ExFiles\Box 142\4\ scan0151 | |
| Date | 14th January 1936 | |
| Exptl. Dept. Hs{Lord Ernest Hives - Chair}/AFM.{Anthony F. Martindale}10/KW. 14th January, 1936. The Northern Aluminium Co.Ltd., BIRMINGHAM. Dear Sirs, With reference to your "Lo-Ex" Piston advertisement in the January "Automobile Engineer". We assume from the title of your aluminium that it has a lower coefficient of thermal expansion than 22.4 x 10-6 per degree C. If this is so it is of interest to us as we are looking for such an alloy to use with a high expansion steel, having a co-efficient of expansion of about 18 x 10-6 per degree C. If the use of your alloy would reduce the difference between these two figures we should be much obliged if you could supply us with a graph of tensile strength against temperature, and any other of its physical properties that you have available. Trusting to hear from you shortly. I am, Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||