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 corrosion tests of a brass tube in hard water and various chemical solutions.
| Identifier | ExFiles\Box 38\2\ Scan116 | |
| Date | 5th August 1920 | |
| COPY. X.3456 BY.{R.W. Bailey - Chief Engineer} C. Hs.{Lord Ernest Hives - Chair} E.F.F. H13/EB5.8.20 Laboratory. X.3456 X.3678 RADIATORS - BY8/H28.7.20. Up to the present after five days, during which a brass tube has been in very hard water taken from a Chell- aston 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 pieceof mild steel and solder, and we have found that all these three are slightly effected, the greatest effect is with the 1% sudium 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. HCH. | ||