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 and mechanical properties of a metal sheet sample.
| Identifier | ExFiles\Box 113\5\ scan0111 | |
| Date | 24th November 1939 | |
| LABORATORY. 24th. November, 1939. Sample No. Sm.9 To Mr. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Summers - Order No. 147/S/3 for Messrs. Rolls-Royce 2 sheets 180" x 32" x .064" ex Stock Card S358. Rolled 20th. Nov. Temp. on holding table 1055°C (1932°F) Analysis C. .115 Si Trace S .035 P. .048 Mn .345 Sn{Mr Sanderson} Trace Edge Middle Microstructure (See prints) 09/10 09 Bends OK.OK OK.OK Erichsen 11.3 mms. 11.4 mms. Rockwell B.62 B65 Thickness .064" .064" Tensile Tests - Yield Point Tons/sq.in. Ultimate Tensile Strength Tons/sq.in. Elongation On 8" Longitudinal 19.25 23.2 26% Transverse 21.41 23.82 24.5% | ||