Materials and Construction
Most common stainless steel type 316, which is highly resistant to corrosion contains

16-13% Cr 10-14% Ni and 2-3% Mo
None of these
2-4% Cr, 22% NI and 2-4% Mo
20-22% Cr, and 8-10% Ni

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Materials and Construction
Lead

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

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