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).
Fatigue limit diagram for High Manganese Steel #13, with stresses calculated by Wahl formula.
| Identifier | ExFiles\Box 158\4\ scan0082 | |
| Date | 10th October 1936 guessed | |
| FINAL STRESS, THOUSAND LBS. PER SQ. INCH. INITIAL STRESS, THOUSAND LBS. PER SQ. INCH. ENDURANCE LIMIT ELASTIC LIMIT 1 2 3 4 NO. 1, 3, BROKEN NO. 2, 4, UNBROKEN Figure 19. Fatigue Limit Diagram for High Manganese Steel #13. All stresses calculated by Wahl formula. | ||