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What is the amount of nitrogen used in HPF steel?(a) Less than 0.03%(b) Less than 0.02%(c) Less than 0.04%(d) Less than 0.05% |
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Answer» The correct option is (b) Less than 0.02% The best I can explain: The nitrogen content which is used in HPF steel is very less in percentage composition. The amount of nitrogen used in terms of percentage weight is less than 0.02%. |
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