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What is the Vicker’s hardness of steel before the HPF process?(a) 150 Hv(b) 160 Hv(c) 170 Hv(d) 180 HvThe question was posed to me in an interview for job.My question comes from Inverse Rate Curves for Steel in portion Heat treatment of Metals and Alloys of Casting-Forming-Welding II

Answer» RIGHT option is (c) 170 Hv

For explanation: The HPF process in steels is considered to be a very important process, it INVOLVES heating the steel to high temperatures. The VICKERS HARDNESS of steel before HPF process is 170 Hv.


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