HIGH-STRENGTH STEEL WIRE MATERIAL EXHIBITING EXCELLENT COLD-DRAWING PROPERTIES, AND HIGH-STRENGTH STEEL WIRE

摘要

Provided are: a high-strength steel wire material which exhibits excellent cold-drawing properties and a high prescribed strength; a high-strength steel wire produced from this high-strength steel wire material; and a zinc-plated high-strength steel wire. This high-strength steel wire material is characterized by respectively including 0.80-1.3% of C, 0.1-1.5% of Si, 0.1-1.5% of Mn, more than 0% but not more than 0.03% of P, more than 0% but not more than 0.03% of S, 0.02-0.2% of Ti, 0.01-0.10% of Al, and 0.001-0.006% of N, the remainder comprising iron and unavoidable impurities. The high-strength steel wire material is further characterized in that the relationship in formula (1), namely 0.05%≧[Ti*]≧(0.0023 [C]) (with the caveat that [Ti*]=(the total amount of Ti−the total amount of Ti in compounds having a size of at least 0.1 μm), and [C] represents the carbon content (in mass %)), is satisfied.

主权项

1. A high-strength steel wire rod having good rod drawability, the steel wire rod comprising:
C: 0.80 to 1.3% by mass; Si: 0.1 to 1.5% by mass; Mn: 0.1 to 1.5% by mass; P: more than 0% and 0.03% or less by mass; S: more than 0% and 0.03% or less by mass; Ti: 0.02 to 0.2% by mass; Al: 0.01 to 0.10% by mass; N: 0.001 to 0.006% by mass; and iron and inevitable impurities,wherein a relationship of Formula (1) is satisfied:
0.05%≧[Ti*]≧(0.0023×[C])  (1) where [Ti*] represents “a total amount of Ti−an amount of Ti in compounds having a size of 0.1 μm or more”, and [C] represents carbon content (by mass percent)).