Materials and Construction
Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its

Low temperature strength properties
High strength to weight ratio
Its ability to be cast, rolled, forged & stamped
High strength and corrosion & oxidation-resistance at elevated temperature

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Materials and Construction
Lead pipe is

Having very low elastic limit resulting in permanent deformation from either mechanical or thermal strain
All of these
Usually joined by burning (e.g. by melting to adjacent pieces with a torch)
Especially resistant to solutions containing H₂SO₄

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