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).
Inquiry to Harold Andrews Grinding Co. Ltd. for technical data on a Nickel-Copper-Chromium alloy for use as a brake drum liner.
| Identifier | ExFiles\Box 142\4\ scan0152 | |
| Date | 14th January 1936 | |
| Exptl. Dept. Hs{Lord Ernest Hives - Chair}/AFM.{Anthony F. Martindale}9/KW. 14th January, 1936. Messrs. Harold Andrews Grinding Co.Ltd., Bristol Road, Bournbrook, Birmingham. Dear Sirs, With reference to your cylinder liner advertisement in the January "Automobile Engineer". We are trying to find a suitable Austenitic steel to use as a brake drum liner, and would be much obliged if you could supply us with any of the following data concerning your Nickel-Copper-Chromium alloy. Brinell Figure - as cast or forged. Brinell Figure - work hardened. Specific heat. Specific conductivity. Co-efficient of Thermal Expansion. In addition, an etched and an unetched photomicrograph would be of assistance to us (explaining what etching process you use) or if you have not these pictures, if you would care to supply us with four samples 1/2" square we could make our own. Trusting to hear from you shortly. I am, Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||