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Duralumin (also called duraluminum, duraluminium, duralum, dural(l)ium, or dural) is a trade name for one of the earliest types of age-hardenable aluminium–copper alloys. The term is a combination of Düren and aluminium .
[1] [2] In older systems of terminology, 2XXX series alloys were known as duralumin, and this alloy was named 24ST. 2024 is commonly extruded, and also available in alclad sheet and plate forms. It is not commonly forged (the related 2014 aluminium alloy is, though). [3]
Duralumin is the oldest variety in this group and goes back to Alfred Wilm, who discovered it in 1903. Aluminium could only be used as a widespread construction material thanks to the aluminium-copper alloys, as pure aluminium is much too soft for this and other hardenable alloys such as aluminium-magnesium-silicon alloys (AlMgSi) or the ...
Birmabright (magnesium, manganese): used in car bodies, mainly used by Land Rover cars. Devarda's alloy (45% Al, 50% Cu, 5% Zn): chemical reducing agent. Duralumin ; 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
Formerly referred to as duralumin, they were once the most common aerospace alloys, but were susceptible to stress corrosion cracking and are increasingly replaced by 7000 series in new designs. 2000 series aluminium alloy nominal composition (% weight) and applications
Like duralumin, this was a 4% copper alloy, but with the addition of 2% nickel and 1.5% magnesium. [4] This addition of nickel was an innovation for 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.
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Plymax is a composite material. It consists of a thin sheet of metal, such as aluminium, copper, or duralumin, that is bonded to a thicker sheet of plywood, giving it strength and rigidity at a relatively low weight.