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What is the amount of boron used in HPF steel?(a) Less than 0.003%(b) Less than 0.007%(c) Less than 0.009%(d) Less than 0.057% |
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Answer» Right choice is (a) Less than 0.003% Easy explanation: The boron content which is used in HPF steel is extremely less in percentage composition. The amount of boron used in terms of percentage weight is less than 0.003%. |
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