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).
Laboratory report on the chemical analysis of a non-ferrous alloy from a 'Condor' piston.
| Identifier | ExFiles\Box 76\3\ scan0057 | |
| Date | 10th June 1918 | |
| RR. 664a. ROLLS-ROYCE, LIMITED. LL 547 LABORATORY REPORT ON NON-FERROUS ALLOY. To Mr. Hives & Works Date 10/6/18 Re "Condor" piston (burnt near the inlet) alloy in the form of one of same received at works on laboratory on 7/6/18 CHEMICAL ANALYSIS. Aluminium .. .. .. .. .. % Copper .. .. .. .. .. 7.4 % Zinc .. .. .. .. .. 1.1 % Tin .. .. .. .. .. % Antimony .. .. .. .. .. % Lead .. .. .. .. .. % Iron .. .. .. .. .. .58 % Arsenic .. .. .. .. .. % Nickel .. .. .. .. .. % Silicon .. .. .. .. .. .27 % Phosphorus .. .. .. .. .. % Sulphur .. .. .. .. .. % Manganese .. .. .. .. .. .072 / .051 % Magnesium Oxides TOTAL ESTIMATED .. .20 % Remarks, etc. This piston was rather high in zinc, otherwise satisfactory in composition. Microscopically the pores are shown to be in the interior of the casting. Signature JDB | ||