WIRE ROD AND PART WITH IMPROVED DELAYED FRACTURE RESISTANCE, AND METHODS FOR MANUFACTURING SAME
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United States of America Patent
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Issued Date -
Feb 22, 2024
app pub date -
Dec 14, 2021
filing date -
Dec 18, 2020
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Disclosed are wire rods and parts with improved delayed fracture resistance, and methods for manufacturing the same. The wire rod with improved delayed fracture resistance according to the present disclosure contains, by wt %, 0.15-0.30% of C, 0.15-0.25% of Si, 0.95-1.35% of Mn, 0.030% or less of P, 0.030% or less of S, 0.015-0.030% of Ti, 0.0010-0.0040% of B, 0.0010-0.0080% of N, and Fe and inevitable impurities as the balance, and satisfies formula 1 of 2.0≤5.5×[Si]+[Mn]≤2.4, where [Si] and [Mn] represent the contents (wt %) of the corresponding elements.
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