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 detailing the chemical analysis of a steel sample from an Annulus Gear that broke during testing.
| Identifier | ExFiles\Box 76\3\ scan0065 | |
| Date | 18th July 1918 | |
| RR. 864. ROLLS-ROYCE, LIMITED. LL 186 LABORATORY REPORT ON SAMPLE OF STEEL. To: fr. Lines & Works Date: 18.7.1918 Re: Annulus Gear (broke on test) steel in the form of: one marked: Eagle received at works on: 17.7.18 received by: laboratory on: 17.7.18 CHEMICAL ANALYSIS. Carbon: .06% low Nickel: 4.95% Chromium: % Vanadium: % Tungsten: % Manganese: .46% Silicon: .08% Sulphur: .026% Phosphorus: .018% Remarks, etc. The case on the teeth was satisfactory & the core in a refined condition. Brinell on core 196! Bent double & back again. Section cut close to flaw line did not support the supposition: & the appearance was probably due to the way the annulus broke. Signature: JRDJ | ||