JP2005501969A5 - - Google Patents

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JP2005501969A5
JP2005501969A5 JP2003525691A JP2003525691A JP2005501969A5 JP 2005501969 A5 JP2005501969 A5 JP 2005501969A5 JP 2003525691 A JP2003525691 A JP 2003525691A JP 2003525691 A JP2003525691 A JP 2003525691A JP 2005501969 A5 JP2005501969 A5 JP 2005501969A5
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Japan
Prior art keywords
steel according
mass
value
steel
ferrite
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JP2003525691A
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Japanese (ja)
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JP2005501969A (en
JP4234592B2 (en
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Priority claimed from SE0102931A external-priority patent/SE524952C2/en
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Publication of JP2005501969A publication Critical patent/JP2005501969A/en
Publication of JP2005501969A5 publication Critical patent/JP2005501969A5/ja
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Publication of JP4234592B2 publication Critical patent/JP4234592B2/en
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Expired - Fee Related legal-status Critical Current

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Claims (21)

質量％で、
Ｃ ：０．０３％以下
Ｓｉ：０．５％以下
Ｍｎ：０〜３．０％
Ｃｒ：２４．０〜３０．０％
Ｎｉ：４．９〜１０．０％
Ｍｏ：３．０〜５．０％
Ｎ ：０．２８〜０．５％
Ｂ ：０〜０．００３０％
Ｓ ：０．０１０％以下
Ｃｏ：０〜３．５％
Ｗ ：０〜３．０％
Ｃｕ：０〜２．０％
Ｒｕ：０〜０．３％
Ａｌ：０〜０．０３％
Ｃａ：０〜０．０１０％
残部：Ｆｅおよび通常の不純物および添加物から成る組成を有し、フェライト量が４０〜６５vol％であることを特徴とするフェライト・オーステナイト２相ステンレス鋼。 % By mass
C: 0.03% or less Si: 0.5% or less Mn: 0 to 3.0%
Cr: 24.0 to 30.0%
Ni: 4.9 to 10.0%
Mo: 3.0-5.0%
N: 0.28 to 0.5%
B: 0 to 0.0030%
S: 0.010% or less Co: 0 to 3.5%
W: 0 to 3.0%
Cu: 0 to 2.0%
Ru: 0 to 0.3%
Al: 0 to 0.03%
Ca: 0 to 0.010%
Remainder: Ferrite-austenitic duplex stainless steel having a composition comprising Fe and ordinary impurities and additives, and having a ferrite content of 40 to 65 vol%. 請求項１において、Ｍｎ量が０．５〜１．２質量％であることを特徴とする鋼。   The steel according to claim 1, wherein the amount of Mn is 0.5 to 1.2 mass%. 請求項１または２において、Ｃｒ量が２７．０〜２９．０質量％であることを特徴とする鋼。   The steel according to claim 1 or 2, wherein the Cr content is 27.0 to 29.0 mass%. 請求項１から３までのいずれか１項において、Ｎｉ量が５．０〜８．０質量％であることを特徴とする鋼。 The steel according to any one of claims 1 to 3, wherein the amount of Ni is 5.0 to 8.0 mass%. 請求項１から４までのいずれか１項において、Ｍｏ量が３．６〜４．７質量％であることを特徴とする鋼。 The steel according to any one of claims 1 to 4, wherein the Mo amount is 3.6 to 4.7% by mass. 請求項１から５までのいずれか１項において、Ｎ量が０．３５〜０．４５質量％であることを特徴とする鋼。 The steel according to any one of claims 1 to 5, wherein the N content is 0.35 to 0.45 mass%. 請求項１から６までのいずれか１項において、ルテニウム量が０〜０．３質量％であることを特徴とする鋼。 The steel according to any one of claims 1 to 6, wherein the amount of ruthenium is 0 to 0.3 mass % . 請求項７において、ルテニウム量が０より大で０．１質量％以下であることを特徴とする鋼。The steel according to claim 7, wherein the amount of ruthenium is greater than 0 and 0.1 mass% or less. 請求項１から８までのいずれか１項において、コバルト量が０．５〜３．５質量％であることを特徴とする鋼。 The steel according to any one of claims 1 to 8, wherein the cobalt content is 0.5 to 3.5 mass % . 請求項９において、コバルト量が１．５〜３．５質量％であることを特徴とする鋼。The steel according to claim 9, wherein the cobalt content is 1.5 to 3.5 mass%. 請求項１から１０までのいずれか１項において、銅量が０．５〜２．０質量％であることを特徴とする鋼。 The steel according to any one of claims 1 to 10, wherein the amount of copper is 0.5 to 2.0 mass % . 請求項１１において、銅量が１．０〜１．５質量％であることを特徴とする鋼。The steel according to claim 11, wherein the copper content is 1.0 to 1.5 mass%. 請求項１から１２までのいずれか１項において、フェライト量が４２〜６０vol％であることを特徴とする鋼。 The steel according to any one of claims 1 to 12, wherein the ferrite content is 42 to 60 vol% . 請求項１３において、フェライト量が４５〜５５vol％であることを特徴とする鋼。The steel according to claim 13, wherein the ferrite content is 45 to 55 vol%. 請求項１から１４までのいずれか１項において、ＰＲＥ＝％Ｃｒ＋３．３％Ｍｏ＋１６ＮおよびＰＲＥＷ＝％Ｃｒ＋３．３（％Ｍｏ＋０．５％Ｗ）＋１６Ｎ、ここで％は質量％、で定義されるのＰＲＥ値またはＰＲＥＷ値が４４より大きいことを特徴とする鋼。 15. In any one of claims 1 to 14 , PRE =% Cr + 3.3% Mo + 16N and PREW =% Cr + 3.3 (% Mo + 0.5% W) + 16N, where% is defined as% by mass. Steel characterized by a PRE value or PREW value greater than 44. 請求項１５において、フェライト相およびオーステナイト相の両方についてＰＲＥ値またはＰＲＥＷ値が４５より大きく、合計組成についてのＰＲＥ値またはＰＲＥＷ値が４６より大きいことを特徴とする鋼。 Steel according to claim 15 , characterized in that the PRE or PREW value is greater than 45 for both the ferrite and austenite phases and the PRE or PREW value for the total composition is greater than 46. 請求項１５または１６において、フェライト相およびオーステナイト相の両方についてＰＲＥ値またはＰＲＥＷ値が４７〜４９であることを特徴とする鋼。 Steel according to claim 15 or 16, wherein the PRE value or PREW value is 47 to 49 for both the ferrite phase and the austenite phase. 請求項１５から１７までのいずれか１項において、オーステナイト相のＰＲＥ（Ｗ）値とフェライト相のＰＲＥ（Ｗ）値との比が０．９０〜１．１５であることを特徴とする鋼。 In any one of claims 15 to 17, the ratio between PRE (W) value of the austenite phase of the PRE (W) value and the ferrite phase is characterized by a 0.90 to 1.1 5 Steel . 請求項１８において、オーステナイト相のＰＲＥ（Ｗ）値とフェライト相のＰＲＥ（Ｗ）値との比が０．９〜１．０５であることを特徴とする鋼。The steel according to claim 18, wherein the ratio of the PRE (W) value of the austenite phase and the PRE (W) value of the ferrite phase is 0.9 to 1.05. 請求項１から１９までのいずれか１項において、塩化物含有環境中で用いられることを特徴とする鋼。 The steel according to any one of claims 1 to 19 , wherein the steel is used in a chloride-containing environment. 請求項２０において、棒、溶接管およびシームレス管などの管、板、ストリップ、ワイヤ、溶接ワイヤ、または、ポンプ、バルブ、フランジ、カプリング等の部材として用いられる鋼。 According to claim 20, rods, tubes, such as welded tubes and seamless tubes, plate, strip, wire, welding wire, or, pumps, valves, flanges, steels need use as a member of the coupling or the like.
JP2003525691A 2001-09-02 2002-09-02 Duplex steel Expired - Fee Related JP4234592B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0102931A SE524952C2 (en) 2001-09-02 2001-09-02 Duplex stainless steel alloy
PCT/SE2002/001564 WO2003020994A1 (en) 2001-09-02 2002-09-02 Duplex steel alloy

Publications (3)

Publication Number Publication Date
JP2005501969A JP2005501969A (en) 2005-01-20
JP2005501969A5 true JP2005501969A5 (en) 2006-01-05
JP4234592B2 JP4234592B2 (en) 2009-03-04

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JP2003525691A Expired - Fee Related JP4234592B2 (en) 2001-09-02 2002-09-02 Duplex steel

Country Status (18)

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US (1) US20030086808A1 (en)
EP (2) EP1423548B1 (en)
JP (1) JP4234592B2 (en)
KR (2) KR100989022B1 (en)
CN (1) CN100465325C (en)
AT (2) ATE391192T1 (en)
AU (1) AU2002328002B9 (en)
BR (1) BR0212270B1 (en)
CA (1) CA2459253A1 (en)
DE (2) DE60225951T2 (en)
DK (2) DK1423548T3 (en)
ES (2) ES2266557T3 (en)
MX (1) MXPA04002017A (en)
NO (1) NO338090B1 (en)
OA (1) OA12657A (en)
PL (1) PL199387B1 (en)
SE (1) SE524952C2 (en)
WO (1) WO2003020994A1 (en)

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