Materials and Construction
Pure nickel is

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

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Materials and Construction
Hastelloy C is a good material of construction in chemical process industry, since it is

Light and resists attack by acids
Corrosion resistant to most alkalis, particularly because of its coper content
Relatively inexpensive although it can be fabricated with some difficulty
Highly corrosion resistant and is readily fabricated

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