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).
Stress-strain diagram for Stainless Steel #9, showing tension and torsion curves.
| Identifier | ExFiles\Box 158\4\ scan0080 | |
| Date | 10th October 1936 guessed | |
| STRESS, THOUSAND LBS PER SQ. INCH. INCHES ELONGATION TENSION CURVE DEGREES TORQUE TORSION CURVE Figure 17. Stress-Strain Diagram for Stainless Steel #9. Ultimate strength 216,000 P.S.I. Tension Ultimate strength 172,000 P.S.I. Torsion Elongation 8"-17%, 2"-3.9% Reduction of Area 53.7%, Rockwell 42-43 C | ||