公开(公告)号：US20160032434A1

公开(公告)日：2016-02-04

申请号：US14779364

申请日：2014-03-28

Applicant: NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION

Inventor： Yoshiharu INOUE ,  Nobuhiko HIRAIDE ,  Atsuhisa YAKAWA

IPC: C22C38/58 ,  C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  C22C38/00 ,  C22C38/44 ,  C22C38/42 ,  C22C38/34 ,  C22C38/06 ,  C22C38/04 ,  C22C38/54 ,  C22C38/46

CPC classification number: C22C38/58 ,  C21D6/004 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0273 ,  C21D9/46 ,  C21D2211/001 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/34 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54

Abstract: This heat-resistant austenitic stainless steel sheet contains, in mass %, C: 0.05 to 0.15%, Si: 1.0 to 3.5%, Mn: 0.5 to 2.0%, P: not more than 0.04%, S: not more than 0.01%, Cr: 23.0 to 26.0%, Ni: 10.0 to 15.0%, Mo: 0.50 to 1.20%, Ti: not more than 0.1%, Al: 0.01 to 0.10% and N: 0.10 to 0.30%, wherein the total amount of C and N (C+N) is from 0.25 to 0.35%, and the balance is composed of Fe and unavoidable impurities. The heat-resistant austenitic stainless steel can be used in a high-temperature environment that reaches a maximum temperature of 1,100° C.

Abstract translation: 该耐热奥氏体系不锈钢板以质量％计含有C：0.05〜0.15％，Si：1.0〜3.5％，Mn：0.5〜2.0％，P：0.04％以下，S：0.01％ ，Cr：23.0〜26.0％，Ni：10.0〜15.0％，Mo：0.50〜1.20％，Ti：0.1％以下，Al：0.01〜0.10％，N：0.10〜0.30％ N（C + N）为0.25〜0.35％，余量为Fe和不可避免的杂质。 耐热奥氏体不锈钢可用于达到1100℃最高温度的高温环境。

公开(公告)号：US20160053353A1

公开(公告)日：2016-02-25

申请号：US14780468

申请日：2014-03-27

Applicant: NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION

Inventor： Yoshiharu INOUE ,  Norihiro KANNO ,  Koji ITO ,  Takeshi TOMURA ,  Koichi IUCHI

IPC: C22C38/54 ,  C21D9/46 ,  C21D6/00 ,  C22C38/50 ,  C22C38/48 ,  C22C38/00 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21D8/02 ,  C22C38/46

CPC classification number: C22C38/54 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D6/02 ,  C21D8/02 ,  C21D8/0263 ,  C21D8/0426 ,  C21D8/0463 ,  C21D9/46 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/004 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

Abstract: Ferritic stainless steel hot rolled sheet and steel strip excellent in toughness and corrosion resistance which have a predetermined chemical composition, have a Charpy impact value at 0° C. of 10 J/cm2 or more, and have a thickness of 5.0 to 9.0 mm.

Abstract translation: 具有预定化学组成的韧性和耐腐蚀性优异的铁素体不锈钢热轧板和钢带在0℃下的夏比冲击值为10J / cm 2以上，厚度为5.0〜9.0mm。

公开(公告)号：US20160024627A1

公开(公告)日：2016-01-28

申请号：US14873551

申请日：2015-10-02

Applicant: NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION

Inventor： Shinichi TERAOKA ,  Masaaki KOBAYASHI ,  Yuuji KOYAMA ,  Junichi HAMADA ,  Norihiro KANNO ,  Yoshiharu INOUE ,  Ken KIMURA ,  Jun TAKAHASHI ,  Shigeyuki GOTOH

IPC: C22C38/54 ,  C21D8/02 ,  C21D6/00 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/38 ,  C22C38/32 ,  C22C38/28 ,  C22C38/26 ,  C22C38/22 ,  C22C38/20 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D9/46

CPC classification number: C22C38/54 ,  B21B1/26 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D9/46 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

Abstract: This hot-rolled ferritic stainless steel sheet has a steel composition containing, in terms of % by mass: 0.02% or less of C; 0.02% or less of N; 0.1% to 1.5% of Si; 1.5% or less of Mn; 0.035% or less of P; 0.010% or less of S; 1.5% or less of Ni; 10% to 20% of Cr; 1.0% to 3.0% of Cu; 0.08% to 0.30% of Ti; and 0.3% or less of Al, with the balance being Fe and unavoidable impurities, and the hot-rolled ferritic stainless steel sheet has a Vickers hardness of less than 235 Hv.

公开(公告)号：US20180080106A1

公开(公告)日：2018-03-22

申请号：US15563159

申请日：2016-03-29

Applicant: NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION

Inventor： Shinichi TERAOKA ,  Yoshiharu INOUE ,  Junichi HAMADA ,  Atsuhisa YAKAWA

IPC: C22C38/58 ,  C22C38/46 ,  C22C38/44 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D9/46 ,  C21D8/02 ,  C21D6/00 ,  C22C38/54 ,  C22C38/48 ,  C22C38/50 ,  C22C38/42 ,  F01N3/28 ,  F01N3/10

CPC classification number: C22C38/58 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0226 ,  C21D8/0263 ,  C21D9/46 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  F01N3/106 ,  F01N3/2803 ,  F01N13/16 ,  F01N2330/40 ,  F01N2370/02

Abstract: A stainless steel sheet free of surface flaws, having an enhanced high temperature strength and corrosion resistance, not becoming brittle at a high temperature, and further exhibiting a high oxidation resistance enabling it to be suitably used as an inside pipe of a double pipe of an exhaust manifold, a turbocharger part, and other automobile exhaust system parts, which stainless steel sheet has a predetermined composition of chemical components and satisfies Cr+20Mo≧24.0%, and Si+20C+15N≧5.8%. Further, an automobile exhaust system part, excellent in both the oxidation resistances of the base material and weld zone using the above stainless steel sheet, having a gradient of change of sheet thickness between the weld metal and the base material of the above stainless steel sheet of 15 degrees or less.

公开(公告)号：US20180044767A1

公开(公告)日：2018-02-15

申请号：US15726722

申请日：2017-10-06

Applicant: NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION

Inventor： Norihiro KANNO ,  Junichi HAMADA ,  Yoshiharu INOUE

IPC: C22C38/04 ,  C21D6/02 ,  C21D6/00 ,  C22C38/48 ,  C22C38/44 ,  C22C38/42 ,  C22C38/32 ,  C22C38/30 ,  C22C38/28 ,  C22C38/26 ,  C22C38/24 ,  C22C38/22 ,  C22C38/20 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D8/04 ,  C22C38/54 ,  C21D9/46

CPC classification number: C22C38/04 ,  C21D6/002 ,  C21D6/02 ,  C21D8/0436 ,  C21D8/0473 ,  C21D8/0478 ,  C21D9/46 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/008 ,  C22C38/02 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/54 ,  F01N2530/04

Abstract: To provide a ferritic stainless steel sheet which has high scale spalling even at a high temperature around 1000° C. Provided is a ferritic stainless steel sheet having excellent Mn-containing oxide film-forming ability and scale spalling ability, containing, in terms of mass %: C: 0.001 to 0.020%, N: 0.001 to 0.020%, Si: 0.10 to 0.40%, Mn: 0.20 to 1.00%, Cr: 16.0 to 20.0%, Nb: 0.30 to 0.80%, Mo: 1.80 to 2.40%, W: 0.05 to 1.40%, Cu: 1.00 to 2.50%, and B: 0.0003 to 0.0030%, in which the above-mentioned components are contained satisfying the formula (1) below, and the balance is composed of Fe and inevitable impurities. At least one of N, Al, V, Mg, Sn, Co, Zr, Hf, and Ta may be added in a predetermined content range. 3≦(5×Mo)/(3≦Mn)≦20  (1)

公开(公告)号：US20160097114A1

公开(公告)日：2016-04-07

申请号：US14969310

申请日：2015-12-15

Applicant: Nippon Steel & Sumikin Stainless Steel Corporation

Inventor： Junichi HAMADA ,  Yuji KOYAMA ,  Yoshiharu INOUE ,  Tadashi KOMORI ,  Fumio FUDANOKI ,  Toshio TANOUE ,  Naoto ONO

IPC: C22C38/54 ,  C21D7/02 ,  C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  C22C38/42 ,  C22C38/32 ,  C22C38/28 ,  C22C38/26 ,  C22C38/22 ,  C22C38/20 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D7/13

CPC classification number: C22C38/54 ,  C21D6/002 ,  C21D7/02 ,  C21D7/13 ,  C21D8/0236 ,  C21D8/0263 ,  C21D9/46 ,  C21D2201/05 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52

Abstract: A heat-resistant cold rolled ferritic stainless steel sheet containing, in mass %, 0.02% or less of C, 0.1% to 1.0% of Si, greater than 0.6% to 1.5% of Mn, 0.01% to 0.05% of P, 0.0001% to 0.0100% of S, 13.0% to 20.0% of Cr, 0.1% to 3.0% of Mo, 0.005% to 0.20% of Ti, 0.3% to 1.0% of Nb, 0.0002% to 0.0050% of B, 0.005% to 0.50% of Al, 0.02% or less of N, with the balance being Fe and inevitable impurities, in which {111}-oriented grains are present at an area ratio of 20% or greater in a region from a surface layer to t/4 (t is a sheet thickness), {111}-oriented grains are present at an area ratio of 40% or greater in a region from t/4 to t/2, and {011}-oriented grains are present at an area ratio of 15% or less in the entire region in a thickness direction.

Abstract translation: 一种耐热冷轧铁素体系不锈钢板，以质量％计含有C：0.02％以下的C，0.1〜1.0％的Si，大于0.6％〜1.5％的Mn，0.01〜0.05％的P，0.0001 ％的0.01％，Cr的13.0〜20.0％，Mo为0.1〜3.0％，Ti为0.005〜0.20％，Nb为0.3〜1.0％，B为0.0002〜0.0050％，B：0.005〜 0.50％的Al，0.02％以下的N，余量为Fe和不可避免的杂质，其中{111}取向晶粒以从表面层到t /区的面积比为20％以上， 4（t是片厚），{111}取向晶粒在t / 4〜t / 2的区域以40％以上的面积比存在，{011}取向晶粒存在于区域 在厚度方向的整个区域的比例为15％以下。

公开(公告)号：US20180031169A1

公开(公告)日：2018-02-01

申请号：US15549953

申请日：2016-02-09

Applicant: NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION

Inventor： Hiroshi URASHIMA ,  Yoshiharu INOUE ,  Toshio TANOUE

IPC: F16L58/04 ,  C25D13/04 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  C22C38/06 ,  C22C38/20 ,  C22C38/24 ,  C22C38/30 ,  C22C38/32 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C09D5/08 ,  C09D167/02 ,  F16L58/18

CPC classification number: F16L58/04 ,  B60Y2410/13 ,  C09D5/08 ,  C09D167/02 ,  C22C21/02 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/24 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/60 ,  C25D13/04 ,  F01M11/04 ,  F16L58/185

Abstract: An automotive member or oil filler pipe includes: a member of ferritic stainless steel containing, in mass %, at most 0.015% of C, at most 0.015% of N, 10.5 to 18.0% of Cr, 0.01 to 0.80% of Si, 0.01 to 0.80% of Mn, at most 0.050% of P, at most 0.010% of S, 0.010 to 0.100% of Al, more than 0.3 to 1.5% of Mo, and one or both of 0.03 to 0.30% of Ti and Nb; and a metal fitting of an aluminized stainless steel sheet, which is attached to the member to define therebetween a gap structure to be exposed to a chloride environment, and has an Al-plating weight per unit area ranging from 20 to 150 g/m2 in the gap structure. Surfaces of the metal fitting and member not facing the gap are coated with a cation electrodeposition coating film having a thickness of 5 to 35 μm.

公开(公告)号：US20170253945A1

公开(公告)日：2017-09-07

申请号：US15511905

申请日：2015-09-02

Applicant: NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION

Inventor： Shinichi TERAOKA ,  Yoshiharu INOUE ,  Yuji KOYAMA ,  Junichi HAMADA ,  Toshio TANOUE

IPC: C21D9/46 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C21D8/02 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/54 ,  C22C38/44

CPC classification number: C21D9/46 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

Abstract: A martensitic stainless steel used for a brake disk of a two-wheeled vehicle includes: in % by mass, C of 0.025% to 0.080%, Si of 0.05% to 0.8%, Mn of 0.5% to 1.5%, P of 0.035% or less, S of 0.015% or less, Cr of 11.0% to 13.5%, Ni of 0.01% to 0.50%, Cu of 0.01% to 0.08%, Mo of 0.01% to 0.30%, V of 0.01% to 0.10%, Al of 0.05% or less, and N of 0.015% to 0.060%; a DFE value defined by a formula (1) ranging from 5 to 30; and a δ ferrite fraction observed in a cross section structure ranging from 5% to 30% by an area ratio. Ti, B, Nb, Sn and Bi may be added. DFE=12(Cr+Si)−430C−460N−20Ni−7Mn−89  (1)

公开(公告)号：US20150376733A1

公开(公告)日：2015-12-31

申请号：US14766296

申请日：2014-03-06

Applicant: NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION

Inventor： Norihiro KANNO ,  Junichi HAMADA ,  Yoshiharu INOUE

IPC: C21D9/46 ,  C21D1/84 ,  C22C38/54 ,  C22C38/48 ,  C22C38/44 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/32 ,  C22C38/26 ,  C22C38/24 ,  C22C38/30 ,  C22C38/22 ,  C22C38/28 ,  C22C38/20 ,  C22C38/06 ,  C21D8/02

Abstract: This ferritic stainless steel sheet contains, in terms of % by mass, 0.02% or less of C, 0.02% or less of N, 0.10% to 0.60% of Si, 0.10% to 0.80% of Mn, 15.0% to 21.0% of Cr, more than 2.00% to 3.50% or less of Cu, 0.30% to 0.80% of Nb, 1.00% to 2.50% of Mo, and 0.0003% to 0.0030% of B, with a remainder being Fe and unavoidable impurities, wherein a maximum particle size of ε-Cu that is present in a structure is 20 nm to 200 nm.

Abstract translation: 该铁素体系不锈钢板以质量％计，含有0.02％以下的N，0.02％以下的N，0.10〜0.60％的Si，0.10〜0.80％的Mn，15.0〜21.0％的 Cr，Cu：2.00〜3.50％以下，Nb：0.30〜0.80％，Mo：1.00〜2.50％，B：0.0003〜0.0030％，余量为Fe和不可避免的杂质， 存在于结构中的最大粒径为-20μm至200nm。