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 non-ferrous alloy pistons.
| Identifier | ExFiles\Box 76\3\ scan0002 | |
| Date | 11th December 1916 | |
| RR. 864a. ROLLS-ROYCE, LIMITED. L 529 LABORATORY REPORT ON NON-FERROUS ALLOY. To Mr Nadin Date 11th Dec 1916 Re Pistons (aluminium Copper) alloy from Mr Nadin in the form of Pistons etc marked 1 2 3 (Good) (Medium) + (Bad) received at works on received by laboratory on 8th Dec CHEMICAL ANALYSIS. No1, No2, No3 Aluminium .. .. .. .. 86.30 .. 87.6 % .. 86.40 % Copper .. .. .. .. 11.95 .. 11.30 % .. 11.46 % Zinc .. .. .. .. 0.80 .. 0.10 % .. 1.10 % Tin .. .. .. .. .. % .. % Antimony .. .. .. .. .. % .. % Lead .. .. .. .. .. % .. % Iron .. .. .. .. 0.25 .. 0.37 % .. 0.45 % Arsenic .. .. .. .. .. % .. % Nickel .. .. .. .. .. % .. % Silicon .. .. .. .. 0.31 .. 0.43 % .. 0.40 % Phosphorus .. .. .. .. .. % .. % Sulphur .. .. .. .. .. % .. % Manganese .. .. .. .. .. % .. % Oxide of Aluminium - all traces only. TOTAL ESTIMATED .. % Remarks, etc: From above it appears that Silicon & Iron have a bad influence. Another test not yet complete indicates that Zinc over 1.0% tends to disintegration under heatings. These pistons had not been tested in Engine, so have only traces of Aluminium Oxide. Continued Signature HCP | ||