Materials and Construction
Pure nickel is

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

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Materials and Construction
Lead

Is the lightest metal in common use
Can not be scratched by finger nails
Is the hardest metal in common use
Can not be work hardened

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