Stahldrahtstange und Stahldraht mit Hervorragender Wasserstoffversprödungsbeständigkeit und Herstellungsverfahren dafür

Details

Veröffentlichungs-Nr.

EP4800137

Anmeldetag

13. November 2024

Veröffentlichung

19. Juni 2025

Rechtsraum

EP

Abstract

The present disclosure relates to a wire rod and a steel wire with excellent hydrogen embrittlement resistance, and manufacturing methods therefor, and more particularly, to a wire rod with excellent hydrogen embrittlement resistance, comprising, in percent by weight (wt%), 0.20 to 0.40% of carbon (C), 0.20 to 0.50% of silicon (Si), 0.50 to 1.00% of manganese (Mn), 0.050 to 0.100% of titanium (Ti), 0.030 to 0.080% of sulfur (S), and the remainder of iron (Fe) and other inevitable impurities, wherein an atomic ratio of Ti to S (Ti/S) satisfies Formula (1) below, and when a radius of the wire rod is D, a microstructure in a region of 1/2D to 3/2D of a cross section of the wire rod comprises 20 to 30% of ferrite and residual pearlite in area fraction.0.5 ≤ [(Ti content (wt%)) / (atomic weight of Ti)] / [(S content (wt%)) / (atomic weight of S)] ≤ 1.8

Anmelder

Firma

POSCO Co., Ltd

Land

🇰🇷 Südkorea