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).
Properties and potential applications of Firth's Staybright steel.
| Identifier | WestWitteringFiles\N\October1925-December1925\ Scan147 | |
| Date | 17th December 1925 | |
| TO BY.{R.W. Bailey - Chief Engineer} FROM R.{Sir Henry Royce} Copy to - DJ. " HS.{Lord Ernest Hives - Chair} FIRTH'S STAYBRIGHT STEEL. Mr. Hatfield sent me a pamphlet on the above. In addition to my previous memo. E.{Mr Elliott - Chief Engineer} says:- " One of the most interesting points disclosed by Dr. "Hatfield's paper is that the co-efficient of expansion is 70% "greater than the usual co-efficient for steel. " This suggests that the new steel might make very good "liners for aluminium cyl. blocks, its expansion being 85% "instead of 50% of that of aluminium. " If the new material could be surface hardened it "might also be useful for piston pins, where it would follow up "the piston expansion more closely, and take up in the little "end when hot. " As regards the non-corrosive properties of this steel "a number of uses suggest themselves as follows:- " (1) Brake cables. " (2) Brake forks, cable eyes, pins, rods, nuts, etc. " exposed to mud and wet under normal conditions. " (3) Axle brake shafts which rust up if neglected. " (4) Radiator pivots. " (5) Engine suspension pivot. " (6) Inserted valve seats. " (7) Eagle 9. cyl. barrels. " (8) Battery box fittings. " (9) Sheet metal work generally on chassis and body. " This material it is noticed also retains its strength "with high temperature, and is therefore a possible valve steel." R.{Sir Henry Royce} | ||