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    Martensitic stainless steel
    1.
    发明授权
    Martensitic stainless steel 有权
    马氏体不锈钢

    公开(公告)号：US08157930B2

    公开(公告)日：2012-04-17

    申请号：US10798855

    申请日：2004-03-12

    申请人： Hisashi Amaya ,  Kunio Kondo ,  Masakatsu Ueda ,  Keiichi Nakamura ,  Takahiro Kushida ,  Kazuyo Kushida, legal representative

    发明人： Hisashi Amaya ,  Kunio Kondo ,  Masakatsu Ueda ,  Keiichi Nakamura ,  Takahiro Kushida

    IPC分类号： C22C38/22 ,  C21D8/02

    CPC分类号： C22C38/44 ,  C22C38/001 ,  C22C38/002 ,  C22C38/04 ,  C22C38/42

    摘要： A martensitic stainless steel comprising C: 0.01-0.10%, Si: 0.05-1.0%, Mn: 0.05-1.5%, P: not more than 0.03%, S: not more than 0.01%, Cr: 9-15%, Ni: 0.1-4.5%, Al: not more than 0.05% and N: not more than 0.1% in mass %, and further comprising at least one of Cu: 0.05-5% and Mo: 0.05-5%, the residual being Fe and impurities, is provided, wherein the contents of Cu and Mo satisfy the following formula (a) or (b), 0.2%≦Mo+Cu/4≦5%  (a) 0.55%≦Mo+Cu/4≦5%  (b) and wherein the hardness is 30-45 in HRC and the carbide amount in grain boundaries of the prior austenite is not more than 0.5 volume %. The marensitic stainless steel has excellent properties regarding the sulfide stress cracking resistance, the resistance to corrosive wear and the localized corrosion.

    摘要翻译： 一种马氏体不锈钢，其包含C：0.01〜0.10％，Si：0.05〜1.0％，Mn：0.05〜1.5％，P：0.03％以下，S：0.01％以下，Cr：9〜15％，Ni ：0.1-4.5％，Al：0.05％以下，N：0.1质量％以下，进一步含有Cu：0.05〜5％和Mo：0.05〜5％中的至少一种，残留物为Fe 提供Cu和Mo的含量满足下式（a）或（b）：0.2％＆lt; NlE; Mo + Cu / 4＆nlE; 5％（a）0.55％＆nlE; Mo + Cu / 4＆ 5％（b），硬度在HRC中为30-45，前奥氏体的晶界中的碳化物量不大于0.5体积％。 锰矿不锈钢具有耐硫化物应力开裂性，耐腐蚀性和局部腐蚀性等优异性能。

    Martensitic stainless steel oil country tubular good
    2.
    发明授权
    Martensitic stainless steel oil country tubular good 有权
    马氏体不锈钢油管状管状好

    公开(公告)号：US09090957B2

    公开(公告)日：2015-07-28

    申请号：US11792524

    申请日：2004-12-07

    申请人： Hisashi Amaya ,  Kunio Kondo ,  Masakatsu Ueda

    发明人： Hisashi Amaya ,  Kunio Kondo ,  Masakatsu Ueda

    IPC分类号： C22C38/18 ,  C22C38/00 ,  C21D8/10 ,  C21D9/08 ,  C22C38/02 ,  C22C38/20 ,  C22C38/22 ,  C22C38/38 ,  C22C38/58

    CPC分类号： C22C38/00 ,  C21D8/10 ,  C21D8/105 ,  C21D9/08 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/38 ,  C22C38/58

    摘要： A martensitic stainless steel oil country tubular good contains, by mass, 0.005% to 0.1% C, 0.05% to 1% Si, 1.5% to 5% Mn, at most 0.05% P, at most 0.01% S, 9% to 13% Cr, at most 0.5% Ni, at most 2% Mo, at most 2% Cu, 0.001% to 0.1% Al, and 0.001% to 0.1% N, with the balance being Fe and impurities, and the pipe has a Cr-depleted region under the surface. The martensitic stainless steel oil country tubular good according to the present invention does not have a passive film on the surface and corrodes wholly at low speed. In addition, the Ni content is reduced, which allows uneven corrosion to be prevented. Therefore, SCC can be prevented from being generated in spite of the presence of a Cr-depleted region.

    摘要翻译： 马氏体不锈钢油管状良好的质量含有0.005〜0.1％的C，0.05〜1％的Si，1.5〜5％的Mn，至多0.05％的P，最多0.01％的S，9〜13 ％Cr，最多0.5％Ni，至多2％Mo，最多2％Cu，0.001％至0.1％Al和0.001％至0.1％N，余量为Fe和杂质，管道为Cr - 表面下方的剥离区域。 根据本发明的马氏体不锈钢油管状管状体在表面上不具有钝化膜并且完全以低速腐蚀。 另外，Ni含量降低，能够防止不均匀的腐蚀。 因此，尽管存在Cr-贫化区域，也可以防止产生SCC。

    Martensitic stainless steel
    4.
    发明申请
    Martensitic stainless steel 有权
    马氏体不锈钢

    公开(公告)号：US20050034790A1

    公开(公告)日：2005-02-17

    申请号：US10798855

    申请日：2004-03-12

    申请人： Hisashi Amaya ,  Kunio Kondo ,  Masakatsu Ueda ,  Keiichi Nakamura ,  Takahiro Kushida ,  Kazuyo Kushida

    发明人： Hisashi Amaya ,  Kunio Kondo ,  Masakatsu Ueda ,  Keiichi Nakamura ,  Takahiro Kushida ,  Kazuyo Kushida

    IPC分类号： C22C38/00 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/54 ,  C22C38/22

    CPC分类号： C22C38/44 ,  C22C38/001 ,  C22C38/002 ,  C22C38/04 ,  C22C38/42

    摘要： A martensitic stainless steel comprising C: 0.01-0.10%, Si: 0.05-1.0%, Mn: 0.05-1.5%, P: not more than 0.03%, S: not more than 0.01%, Cr: 9-15%, Ni: 0.1-4.5%, Al: not more than 0.05% and N: not more than 0.1% in mass %, and further comprising at least one of Cu: 0.05-5% and Mo: 0.05-5%, the residual being Fe and impurities, is provided, wherein the contents of Cu and Mo satisfy the following formula (a) or (b), 0.2%≦Mo+Cu/4≦5%  (a) 0.55%≦Mo+Cu/4≦5%  (b) and wherein the hardness is 30-45 in HRC and the carbide amount in grain boundaries of the prior austenite is not more than 0.5 volume %. The marensitic stainless steel has excellent properties regarding the sulfide stress cracking resistance, the resistance to corrosive wear and the localized corrosion.

    摘要翻译： 一种马氏体不锈钢，其包含C：0.01〜0.10％，Si：0.05〜1.0％，Mn：0.05〜1.5％，P：0.03％以下，S：0.01％以下，Cr：9〜15％，Ni ：0.1-4.5％，Al：0.05％以下，N：0.1质量％以下，进一步含有Cu：0.05〜5％和Mo：0.05〜5％中的至少一种，残留物为Fe 和杂质，其中Cu和Mo的含量满足下式（a）或（b），0.2％<= Mo + Cu / 4 <= 5％（a）0.55％<= Mo + Cu / 4 <= 5％（b），其中HRC中的硬度为30-45，并且原奥氏体的晶界中的碳化物量不大于0.5体积％。 锰矿不锈钢具有耐硫化物应力开裂性，耐腐蚀性和局部腐蚀性等优异性能。

    Martensitic Stainless Steel Oil Country Tubular Good
    5.
    发明申请
    Martensitic Stainless Steel Oil Country Tubular Good 有权
    马氏体不锈钢国家管状良好

    公开(公告)号：US20090098008A1

    公开(公告)日：2009-04-16

    申请号：US11792524

    申请日：2004-12-07

    申请人： Hisashi Amaya ,  Kunio Kondo ,  Masakatsu Ueda

    发明人： Hisashi Amaya ,  Kunio Kondo ,  Masakatsu Ueda

    IPC分类号： C22C38/20 ,  C22C38/18 ,  C22C38/22

    CPC分类号： C22C38/00 ,  C21D8/10 ,  C21D8/105 ,  C21D9/08 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/38 ,  C22C38/58

    摘要： A martensitic stainless steel oil country tubular good contains, by mass, 0.005% to 0.1% C, 0.05% to 1% Si, 1.5% to 5% Mn, at most 0.05% P, at most 0.01% S, 9% to 13% Cr, at most 0.5% Ni, at most 2% Mo, at most 2% Cu, 0.001% to 0.1% Al, and 0.001% to 0.1% N, with the balance being Fe and impurities, and the pipe has a Cr-depleted region under the surface. The martensitic stainless steel oil country tubular good according to the present invention does not have a passive film on the surface and corrodes wholly at low speed. In addition, the Ni content is reduced, which allows uneven corrosion to be prevented. Therefore, SCC can be prevented from being generated in spite of the presence of a Cr-depleted region.

    摘要翻译： 马氏体不锈钢油管状良好的质量含有0.005〜0.1％的C，0.05〜1％的Si，1.5〜5％的Mn，至多0.05％的P，最多0.01％的S，9〜13 ％Cr，最多0.5％Ni，至多2％Mo，最多2％Cu，0.001％至0.1％Al和0.001％至0.1％N，余量为Fe和杂质，管道为Cr - 表面下方的剥离区域。 根据本发明的马氏体不锈钢油管状管状体在表面上不具有钝化膜并且完全以低速腐蚀。 另外，Ni含量降低，能够防止不均匀的腐蚀。 因此，尽管存在Cr-贫化区域，也可以防止产生SCC。

    Martensitic stainless steel for welded structures
    6.
    发明授权
    Martensitic stainless steel for welded structures 有权
    用于焊接结构的马氏体不锈钢

    公开(公告)号：US08163233B2

    公开(公告)日：2012-04-24

    申请号：US12379724

    申请日：2009-02-27

    申请人： Hisashi Amaya ,  Kazuhiro Ogawa ,  Akira Taniyama ,  Masakatsu Ueda ,  Hideki Takabe

    发明人： Hisashi Amaya ,  Kazuhiro Ogawa ,  Akira Taniyama ,  Masakatsu Ueda ,  Hideki Takabe

    IPC分类号： C22C38/44 ,  C22C38/42

    CPC分类号： C22C38/02 ,  C22C38/005 ,  C22C38/04 ,  C22C38/06 ,  C22C38/40

    摘要： A martensitic stainless steel for welded structures including by mass %, C: 0.001 to 0.05%, Si: 0.05 to 1%, Mn: 0.05 to 2%, P: 0.03% or less, REM: 0.0005 to 0.1%, Cr: 8 to 16%, Ni: 0.1 to 9% and sol. Al: 0.001 to 0.1%; and further including one or more elements selected from among Ti: 0.005 to 0.5%, Zr: 0.005 to 0.5%, Hf: 0.005 to 0.5%, V: 0.005 to 0.5% and Nb: 0.005 to 0.5%; and O: 0.005% or less, N: 0.1% or less, with the balance being Fe and impurities; and the P and REM content satisfies: P≦0.6×REM. This steel possesses excellent SCC (stress corrosion cracking) resistance in welded sections in Sweet environments.

    摘要翻译： 焊接结构的马氏体系不锈钢，以质量％计，C：0.001〜0.05％，Si：0.05〜1％，Mn：0.05〜2％，P：0.03％以下，REM：0.0005〜0.1％，Cr：8 至16％，Ni：0.1〜9％，溶胶。 Al：0.001〜0.1％ 进一步包括选自Ti：0.005〜0.5％，Zr：0.005〜0.5％，Hf：0.005〜0.5％，V：0.005〜0.5％，Nb：0.005〜0.5％的一种或多种元素; O：0.005％以下，N：0.1％以下，余量为Fe和杂质; P和REM含量满足：P＆nlE; 0.6×REM。 这种钢在甜蜜环境中的焊接部分具有优异的SCC（应力腐蚀开裂）性。

    Martensitic stainless steel
    7.
    发明申请
    Martensitic stainless steel 有权
    马氏体不锈钢

    公开(公告)号：US20060174979A1

    公开(公告)日：2006-08-10

    申请号：US11335676

    申请日：2006-01-20

    申请人： Kunio Kondo ,  Hisashi Amaya

    发明人： Kunio Kondo ,  Hisashi Amaya

    IPC分类号： C22C38/22

    CPC分类号： C22C38/42 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44

    摘要： A martensitic stainless steel having a resistance to sulfide stress corrosion cracking superior to Super 13 Cr steel and having a strength and corrosion resistance comparable to dual phase stainless steels has a chemical composition consisting essentially of, in mass %, C: 0.001-0.1%, Si: 0.05-1.0%, Mn: 0.05-2.0%, P: at most 0.025%, S: at most 0.010%, Cr: 11-18%, Ni: 1.5-10%, sol. Al: 0.001-0.1%, N: at most 0.1%, O: at most 0.01%, Cu: 0-5%, solid solution Mo: 3.5-7%, the composition satisfying the following Equation (1), optionally at least one element selected from at least one of the following Groups A-C, and a remainder of Fe and impurities and undissolved Mo, if undissolved Mo is present. Ni-bal.=30(C+N)+0.5(Mn+Cu)+Ni+8.2−1.1(Cr+Mo+1.5Si)≧−4.5  Equation (1) Group A—W: 0.2-5% Group B—V: 0.001-0.50%, Nb: 0.001-0.50%, Ti: 0.001-0.50%, and Zr: 0.001-0.50% Group C—Ca: 0.0005-0.05%, Mg: 0.0005-0.05%, REM: 0.0005-0.05%, and B: 0.0001-0.01%

    摘要翻译： 具有优于超级13Cr钢的具有耐硫化应力腐蚀开裂性且具有与双相不锈钢相当的强度和耐腐蚀性的马氏体不锈钢的化学成分基本上以质量％计含有C：0.001-0.1％ Si：0.05〜1.0％，Mn：0.05〜2.0％，P：0.025％以下，S：0.010％以下，Cr：11〜18％，Ni：1.5〜10％ Al：0.001-0.1％，N：0.1％以下，O：0.01％以下，Cu：0-5％，固溶Mo：3.5〜7％，满足下述式（1）的组成， 选自以下组AC中的至少一个的元素，以及余量的Fe和杂质以及未溶解的Mo，如果不溶解的Mo存在。 Ni-bal = 30（C + N）+0.5（Mn + Cu）+ Ni + 8.2-1.1（Cr + Mo），在线式公式描述=“In-line formula”end =“lead” 组合AW：0.2-5％组BV：0.001-0.50％，Nb（0.51Si））= - 4.5方程式（1）<？in-line-formula description =“In-line Formulas”end =“tail” ：0.001-0.50％，Ti：0.001-0.50％，Zr：0.001-0.50％C-Ca：0.0005-0.05％，Mg：0.0005-0.05％，REM：0.0005-0.05％，B：0.0001-0.01 ％

    Martensitic stainless steel for welded structures
    8.
    发明申请
    Martensitic stainless steel for welded structures 有权
    用于焊接结构的马氏体不锈钢

    公开(公告)号：US20090232694A1

    公开(公告)日：2009-09-17

    申请号：US12379724

    申请日：2009-02-27

    申请人： Hisashi Amaya ,  Kazuhiro Ogawa ,  Akira Taniyama ,  Masakatsu Ueda ,  Hideki Takabe

    发明人： Hisashi Amaya ,  Kazuhiro Ogawa ,  Akira Taniyama ,  Masakatsu Ueda ,  Hideki Takabe

    IPC分类号： C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50

    CPC分类号： C22C38/02 ,  C22C38/005 ,  C22C38/04 ,  C22C38/06 ,  C22C38/40

    摘要： A martensitic stainless steel for welded structures including by mass %, C: 0.001 to 0.05%, Si: 0.05 to 1%, Mn: 0.05 to 2%, P: 0.03% or less, REM: 0.0005 to 0.1%, Cr: 8 to 16%, Ni: 0.1 to 9% and sol. Al: 0.001 to 0.1%; and further including one or more elements selected from among Ti: 0.005 to 0.5%, Zr: 0.005 to 0.5%, Hf: 0.005 to 0.5%, V: 0.005 to 0.5% and Nb: 0.005 to 0.5%; and O: 0.005% or less, N: 0.1% or less, with the balance being Fe and impurities; and the P and REM content satisfies: P≦0.6×REM. This steel possesses excellent SCC (stress corrosion cracking) resistance in welded sections in Sweet environments.

    摘要翻译： 焊接结构的马氏体系不锈钢，以质量％计，C：0.001〜0.05％，Si：0.05〜1％，Mn：0.05〜2％，P：0.03％以下，REM：0.0005〜0.1％，Cr：8 至16％，Ni：0.1〜9％，溶胶。 Al：0.001〜0.1％ 进一步包括选自Ti：0.005〜0.5％，Zr：0.005〜0.5％，Hf：0.005〜0.5％，V：0.005〜0.5％，Nb：0.005〜0.5％的一种或多种元素; O：0.005％以下，N：0.1％以下，余量为Fe和杂质; P和REM含量满足：P <= 0.6×REM。 这种钢在甜蜜环境中的焊接部分具有优异的SCC（应力腐蚀开裂）性。