Very thin, high carbon steel wire and method of producing same

Details Very thin, high carbon steel wire and method of producing same Very thin, high carbon steel wire and method of producing same

2007-08-21

2007-08-21

Yee, Deborah (Department: 1742)

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

C148S599000, C148S320000, C148S330000, C148S331000, C148S332000, C148S333000, C148S334000, C148S335000, C148S336000

Reexamination Certificate

active

10968253

ABSTRACT:
The very thin, high carbon wire is 0.05 to 0.50 mm in diameter and comprises, in mass %, 0.90-1.20% of C, 0.05-1.2% of Si, 0.2-1.0% of Mn, and 0.0050% or less of N, with the balance being iron and impurities. In a differential scanning thermal analysis curve A of the steel wire, the steel wire has an exothermic peak X in the temperature range of 60° to 130° C., and a maximum height h of the exothermic peak X relative to a reference line Y joining the point of 60° C. and the point of 130° C. in the differential scanning thermal analysis curve is set at 5 μW/mg or more. The very thin, high carbon steel wire is free of delamination in high-speed stranding and superior in both strength and ductility.

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