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).
Data sheet showing the results of temperature-based stress tests on various special aluminium alloys.
| Identifier | ExFiles\Box 76\3\ scan0011 | |
| Date | 25th June 1917 | |
| H.R. 300 (120 B) (SC. 576. 25.2.16) E.P. 1262. ROLLS-ROYCE LIMITED. INSTRUCTIONS. 59142 To: Mr Clark. Date: 25 . 6 . 1917 Order No. Customer's No. Re: Special Aluminium Alloys (Continued). | | Temperature | Maximum Stress | Yield Point | Elongation | Reduction of Area | |---|---|---|---|---|---| | C | 320°C | 4.8 | 3.6 | 5.5 | 5.3 | | C | 270°C | 4.8 | 4.0 | 5.2 | 5.4 | | C | 220°C | 5.2 | 4.4 | 4.0 | 4.1 | | C | 20°C | 9.6 | 8.0 | 2.8 | 3.0 | | L | 320°C | 5.8 | 3.6 | 5.5 | 5.0 | | L | 270°C | 5.2 | 4.0 | 4.2 | 4.8 | | P2 | 320°C | 5.8 | 4.4 | 3.0 | 3.2 | | P2 | 270°C | 6.4 | 4.8 | 2.9 | 3.0 | | P2 | 220°C | 6.8 | 4.4 | 2.3 | 2.5 | | P2 | 20°C | 7.2 | 4.4 | 3.3 | 3.3 | | Ac | 320°C | 6.6 | 4.4 | 1.0 | 0.8 | | A | 270°C | 6.8 | 4.8 | 1.6 | 1.5 | | A | 220°C | 6.6 | 4.8 | 0.5 | 0.6 | | A | 20°C | 7.2 | 5.6 | 1.0 | 1.0 | | H1 | Signed This Sheet must be filed on completion of the work. | ||