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 from Ethyl Export Corporation providing details on a modified Monel metal for aluminium bronze seat inserts.
| Identifier | ExFiles\Box 150\1\ scan0051 | |
| Date | 30th September 1935 | |
| CABLEGRAMS: ETHYLPORT, LONDON. TELEGRAMS: ETHYLPORT, SOWEST. ETHYL EXPORT CORPORATION Incorporated in the State of Delaware, U.S.A. with limited liability. THAMES HOUSE, MILLBANK LONDON, S.W.1 Telephone: VICTORIA 5520 Head Office: 135 EAST 42ND STREET NEW YORK, U.S.A 30th September, 1935. W. A.{Mr Adams} Robotham, Esq., Experimental Department, Rolls-Royce Ltd., Nightingale Road, DERBY. Dear Rm.{William Robotham - Chief Engineer}, With reference to the aluminium bronze seat inserts in your "Phantom 3" car, I think I promised you some details of a material which has been developed in France, and is used by Potez in their aero engines. This material is known as a modified Monel metal, but is really quite unlike the former. It is not, in my opinion, so satisfactory as high expansion nickel chromium steel, but it seems to be better than aluminium bronze and works quite well in moderate duty aero engines. The general "make-up" is as follows:- Copper - 26% ± 1% Nickel - 60% ± 2% Silicon - 3.3 - 3.6% Antimony - less than 1% Iron - less than 2% I believe the Brinell number of this material is around 300 to 340, and the co-efficient of expansion about 0.000019. With kind regards, Yours sincerely, FRBanks FRB/BB | ||