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 corrosive effects of various water solutions on radiator materials.
| Identifier | ExFiles\Box 76\3\ scan0125 | |
| Date | 28th July 1920 | |
| R.R 235a (100 T) (S.G. 648, 19-2-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2618 BY.{R.W. Bailey - Chief Engineer} C Hs.{Lord Ernest Hives - Chair} H13/EB5820. Laboratory. RADIATORS. BY/B/H28.7.20. ------------------------ Up to the present after five days, during which a brass tube has been in very hard water taken from a Chellaston pump, there has been practically no action in spite of keeping at a temperature of about 95°C for one third of the time. As extreme cases, we have also taken .1% Sodium Hydrate solution, 1% Sodium Chloride solution and .1% Sodium Carbonate solution, each, as in the hard water test, in the presence of a small piece of mild steel and solder, and we have found that all these three are slightly effected, the greatest effect is with the 1% Sodium Chloride solution, whereas the alkaline solutions do not appear to have anything like the same corrosive action. We are continuing these tests and will report again in about a week. Hard water is not really alkaline water, and we do not think a truly alkaline town water is likely to be found anywhere in the world. Hdb Hs{Lord Ernest Hives - Chair} AUG 5 1920 RECEIVED | ||