Materials and Construction
Babbit metal (used for making bearings) comprises of

Copper and aluminium
Mainly tin (85%) and lead
Zinc and aluminium
Saw dust and iron dust mixture

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Materials and Construction
Pure nickel is

Not resistant to oxidation at high temperature
Having h.c.p. crystal lattice
Ferromagnetic above its curie point (i.e., 415°C)
Ferromagnetic at room temperature

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