9. J03/3/1 (d) Stainless steel is an alloy of iron. It contains
iron, other metals and about 0.5% of carbon.
–(i)
State a use of stainless steel.
–
–(ii)
Name a metal, other than iron, in stainless steel.
–
–(iii) The iron from the blast furnace is impure. It
contains about 5% of carbon and other impurities, such as
silicon and phosphorus. Describe how the percentage of carbon
is reduced and the other impurities are removed. [6]