Which of the following is not a property of hard steel?
(a) Hard steel can be readily forged and welded
(b) It rusts easily
(c) Hard steel can be magnetised permanently
(d) The specific gravity of hard steel is 7.90
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This interesting question is from Steel in section Steel, Timber, Mortar, Plastics, Non-Ferrous Metals and Alloys of Construction & Building Materials