Q.

Which of the following elements is not present in stainless steel?

A. Iron
B. Tungsten
C. Chromium
D. Nickel
Answer» B. Tungsten
Explanation: Stainless steel is defined as a steel alloy of iron with a minimum of 10.5% to 11% chromium content by mass. There are different types of stainless steels: when nickel is added, for instance, the austenite structure of iron is stabilized. This crystal structure makes such steels virtually non-magnetic and less brittle at low temperatures.
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