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).
Tempering graph for Vibrac Steel V.30 showing the effect of reheating temperature on its mechanical properties.
| Identifier | ExFiles\Box 142\2\ scan0481 | |
| Date | 2nd April 1940 guessed | |
| TEMPERING GRAPH OF VIBRAC STEEL V.{VIENNA} 30 DIA. OF BAR: 1" HARDENING TEMPERATURE: 830°C QUENCHING MEDIUM: OIL COOLED, AFTER TEMPERING IN AIR. TONS PER SQUARE INCH - PERCENTAGES - FOOT- POUNDS - BRINELL IN UNITS OF TEN. MAXIMUM STRESS YIELD POINT BRINELL REDUCTION IN AREA % HARDNESS IZOD IMPACT ELONGATION % REHEATING TEMPERATURE - DEGREES CENTIGRADE. ACTUAL REHEATING TEMPERATURES OF TEST SAMPLES INDICATED BY * Material file | ||