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Polish project 664-class torpedo boat, with a hull of welded Hydronalium. Hydronalium is a family of aluminium-magnesium alloys.It is an alloy predominantly of aluminium, with between 1%-12% of magnesium as the primary alloying ingredient.
The material proliferated throughout British engineering throughout the 1950s and 1960s; it began to be used in the frames of road vehicles during the mid 1950s. [9] Kynal was used extensively for British Railways' modernisation of the 1950s , specifically in the construction of the publicly-owned organisation's new diesel fleet . [ 10 ]
Hiduminium or R.R. alloys (2% copper, iron, nickel): used in aircraft pistons Hydronalium (up to 12% magnesium, 1% manganese): used in shipbuilding, resists seawater corrosion Italma (3.5% magnesium, 0.3% manganese): formerly used to make coinage of the Italian lira
As a trade name, Nivarox is an acronym from the German Nicht variabel oxydfest, 'Non-Variable Non-Oxidizing'.The Nivarox alloy is a nickel iron alloy used mainly in the watch industry for hairsprings for balance wheels, but also in other micro-machine industries and in certain medical equipment and surgical instruments, in the same category as Elinvar, Ni-Span, Vibralloy, Nivaflex and other ...
The alloy was introduced by the Birmid Group in 1929 and was particularly noted for its corrosion resistance. Birmal Boats was created in 1930 for the building of light-alloy boats. Birmetals Ltd was formed in 1936 and during the war produced both copper bearing aluminium alloys and the Birmabright magnesium bearing alloys, mainly for aircraft ...
Also saw some use in motor-racing applications from the 1960s, [8] as it is a tolerant alloy that could be press-formed with relatively unsophisticated equipment. 2024: Aircraft structures, rivets, hardware, truck wheels, screw machine products, and other structural applications. 2036: Sheet for auto body panels
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Mn-free are very rare. Standard alloys are AlMg 3 Mn, AlMg 4.5 Mn 0.7, as well as for bodywork AlMg 4.5 Mn 0.4. Magnesium levels of up to 5% and manganese content up to 1% are used for wrought alloys. [8] [9] Mg contents up to 10% are also possible for cast alloys; however, contents of 7% and more are considered heavypourable. [10]