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 analysis report on the material composition of a Buick Hot Spot Heat Control Valve.
| Identifier | ExFiles\Box 124\3\ scan0304 | |
| Date | 24th January 1935 | |
| To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer} X1049 Steadman HL4/AG.24.1.35. Laboratory. Report No.L3170. Re: Buick Hot Spot Heat Control Valve. Analyses : Flap Valve. Spindle. Bush. Chromium 17.8% 6.93% 16.4% Nickel trace 22.9% trace Silicon 0.8 approx. 2.44 0.8 approx The Flap Valve and Bush are evidently 18% Chromium steel, which will probably be easily obtained in this country. The Spindle is of steel which so far as we are aware is not made here, but we would suggest that K.E. 965 would be quite as good if not superior for this use. Hl. HE | ||