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).
The wear characteristics of Mintex 730 and Ferobestos materials.
| Identifier | ExFiles\Box 141\3\ scan0052 | |
| Date | 31th March 1931 | |
| R.R. The Wear Characteristics of Mintex 730 and Ferobestos. These test have been carried out on the N.P.L. Machine at 25 lbs./sq.inch pressure and a rubbing speed of 2,000 ft./min. the temperature range under such conditions with this type of material being 100° - 400° Fah. Test No. Material. Duration of test. N.P.L. Wear Factor Remarks. 469 B. Ferobestos. 5 hours. .0088 ) 469 C. " " " .0097 ) With traverse motion. E.75. Mintex 730. " " .00618 ) E.78. " " " " .00567 ) P.14. Ferobestos. 3.hours. .0046 ) Without traverse motion. H.30. Mintex 730. " " .00286 ) The wear factor represents the loss in thickness in thousandths of an inch for the absorption of one million foot lbs. per sq.inch. --ooOoo-- | ||