The Hiduminium alloys or R.R. alloys are a series of high-strength, high-temperature aluminium alloys, developed for aircraft use by Rolls-Royce ("RR") before World War II.
They were manufactured and later developed by High Duty Alloys Ltd. The name Hi-Du-Minium is derived from that of High Duty Aluminium Alloys.
The first of these Hiduminium alloys was termed 'R.R.50'. This alloy was first developed for motor-racing pistons, and was only later adopted for aircraft engine use. It was a development of the earlier Y alloy, the first of the nickel-containing light aluminium alloys. These alloys are one of the three main groups of high-strength aluminium alloys, the nickel-aluminium alloys having the advantage of retaining strength at high temperatures, making them particularly useful for pistons.
High Duty Alloys Ltd. was founded at Farnham Road, Slough in 1927, by Colonel W. C. Devereux.
Some Mechanical and Physical Properties of Hiduminium R.R. 56. Published by the research lobarotries of Rols Royce, High duty alloys, Ltd. Slough, 1943. Hardcover. Standard book size.
127 pages. With 2 papers in french.
In very good conditions. Speed sending.
Les alliages d'Hiduminium ou alliages R.R. sont une série d'alliages d'aluminium à haute résistance et à haute température, développés pour une utilisation aéronautique par Rolls-Royce avant la Seconde Guerre mondiale. Ils ont été fabriqués et développés plus tard par High Duty Alloys Ltd... Livre Relié, format 15x22,5 cm, 127 pages, en anglais, avec 2 brochures en français. En très bon état. Envoi soigné
