STAINLESS STEEL WIRE, SPRING, AND METHOD FOR PRODUCING SPRING

Title:

STAINLESS STEEL WIRE, SPRING, AND METHOD FOR PRODUCING SPRING

Document Type and Number:

WIPO Patent Application WO/2005/040443

Kind Code:

A1

Abstract:

A stainless steel wire, which has a chemical composition, in mass %, that C: 0.01 to 0.25, N: 0.01 to 0.25, Mn: 0.4 to 4.0, Cr: 16 to 25, Ni: 8.0 to 14.0 and the balance: Fe and inevitable impurities, with the proviso that C and N satisfy the formula: 0.15 mass % ≤ C + N ≤ 0.35 mass %, and comprises 15 volume % or less of a martensite phase induced by drawing the balanced percentage of an austenite phase and also comprises a texture wherein diffraction intensities of the austenite phase by the X-ray diffraction method in the longitudinal direction of the steel wire satisfy both the formulae: I (200)/I(111) ≥ 2.0 and I (220)/I(111) ≥ 3.0. The stainless steel wire is excellent in both corrosion resistance and fatigue strength and also can be produced with good productivity.

Inventors:

IZUMIDA HIROMU (JP)
KAWABE NOZOMU (JP)
FUJINO YOSHIRO (JP)
MURAI TERUYUKI (JP)
TAKAMURA SHINEI (JP)

Application Number:

PCT/JP2004/016041

Publication Date:

May 06, 2005

Filing Date:

October 28, 2004

Export Citation:

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Assignee:

SUMITOMO SEI STEEL WIRE CORP (JP)
IZUMIDA HIROMU (JP)
KAWABE NOZOMU (JP)
FUJINO YOSHIRO (JP)
MURAI TERUYUKI (JP)
TAKAMURA SHINEI (JP)

International Classes:

B21C1/00; C21D1/26; B21F35/00; C21D9/02; C22C38/00; C22C38/58; C21D8/06; (IPC1-7): C22C38/00; C22C38/58; C21D9/02

Foreign References:

JP2003226940A	2003-08-15
JPH09202942A	1997-08-05
JP2003034848A	2003-02-07
JP2003231919A	2003-08-19

Other References: