Claims
- 1. A stainless steel product, consisting essentially of:
- 0.01-0.10 wt % of C,
- 0.1-1.0 wt % of Si,
- 0.30-1.50 wt % of Mn,
- 0.010-0.040 wt % of P,
- 0.001-0.030 wt % of S,
- 18.0-30.0 wt % of Cr,
- 3.0-8.0 wt % of Ni,
- 0.1-3.0 wt % of Mo,
- 0.10-0.45 wt % of N, and
- the balance being Fe and inevitable impurities,
- wherein said stainless steel product comprises a first phase and a second phase, said first phase is ferrite and said second phase is austenite, and a volume ratio of said ferrite, to said austenite and said ferrite, is 35 to 65%,
- said stainless steel member is a wire, grains of said first and second phases are extended along the length of said wire, and said stainless steel member has a mean slenderness ratio of 12-14.
- 2. The stainless steel product of claim 1, wherein said product has been subject to aging at a temperature of 200.degree.-700.degree. C.
- 3. The stainless steel product of claim 1, wherein said wire has a diameter of 5-0.33 mm.
- 4. A stranded member, comprising a plurality of the stainless steel products of claim 1.
- 5. The stainless steel product of claim 1, wherein the number of cycles until a breakage ratio of the wire rope becomes 10% is at least 32.times.10.sup.3.
- 6. The stainless steel product of claim 7, wherein the number of cycles until a breakage ratio of the wire rope becomes 10% is at least 36.times.10.sup.3.
- 7. The stainless steel product of claim 1, wherein said wire has a tensile fatigue strength of at least 24 Kgf/mm.sup.2.
- 8. A stainless steel product, consisting essentially of:
- 0.01-0.10 wt % of C,
- 0.1-1.0 wt % of Si,
- 0.30-1.50 wt % of Mn,
- 0.010-0.040 wt % of P,
- 0.001-0.030 wt % of S,
- 18.0-30.0 wt % of Cr,
- 3.0-8.0 wt % of Ni,
- 0.1-3.0 wt % of Mo,
- 0.10-0.4 wt % of N, and
- the balance being Fe and inevitable impurities,
- wherein said stainless steel product comprises a first phase and a second phase, said first phase is ferrite and said second phase is austenite, and a volume ratio of said ferrite, to said austenite and said ferrite, is 35 to 65%,
- said stainless steel product is a wire, grains of said first and said second phases are extended along the length of said wire, and said stainless steel product has a mean slenderness ratio of 12-14.
- 9. The stainless steel product of claim 8, wherein said product has been subject to aging at a temperature of 200.degree.-700.degree. C.
- 10. The stainless steel product of claim 8, wherein said product has been subject to aging at a temperature of 150.degree.-750.degree. C.
- 11. The stainless steel product of claim 8, wherein said wire has a diameter of 5-0.33 mm.
- 12. A stranded member, comprising a plurality of the stainless steel products of claim 8.
- 13. The stainless steel product of claim 8, wherein the number of cycles until a breakage ratio of the wire rope becomes 10% is at least 32.times.10.sup.3.
- 14. The stainless steel product of claim 8, wherein the number of cycles until a breakage ratio of the wire rope becomes 10% is at least 36.times.10.sup.3.
- 15. The stainless steel product of claim 8, wherein said wire has a tensile fatigue strength of at least 24 Kgf/mm.sup.2.
- 16. A product produced by a process comprising:
- heating a first wire, thereby homogenizing said wire;
- drawing said first wire until the cross-sectional area is reduced by 40-97%, thereby forming a second wire;
- wherein said second wire consists essentially of:
- 0.01-0.10 wt % of C,
- 0.1-1.0 wt % of Si,
- 0.30-1.50 wt % of Mn,
- 0.010-0.040 wt % of P,
- 0.001-0.030 wt % of S,
- 8.0-30.0 wt % of Cr,
- 3.0-8.0 wt % of Ni,
- 0.1-3.0 wt % of Mo,
- 0.10-0.45 wt % of N, and
- the balance being Fe and inevitable impurities,
- said second wire comprises a first phase and a second phase, said first phase is ferrite and said second phase is austenite,
- a volume ratio of said ferrite, to said austenite and said ferrite, is 35 to 65%,
- grains of said first and said second phases are extended along the length of said wire, and said wire has a mean slenderness ratio of 12 to 14.
- 17. The product of claim 16, wherein said process further comprises the step of aging said second wire at a temperature of 150.degree.-750.degree. C.
- 18. The product of claim 16, wherein said process further comprises aging said second wire at a temperature of 200.degree.-700.degree. C.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5-320257 |
Dec 1993 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 08/248,157, filed on May 24, 1994, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4032367 |
Richardson et al. |
Jun 1977 |
|
5238508 |
Yoshitake et al. |
Aug 1993 |
|
Foreign Referenced Citations (4)
Number |
Date |
Country |
59-70719 |
Apr 1984 |
JPX |
61-157626 |
Jul 1986 |
JPX |
4-198456 |
Jul 1992 |
JPX |
1041267 |
Sep 1966 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
248157 |
May 1994 |
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