Austenitic stainless steel with improved resistance to corrosion by
nitric acid
    1.
    发明授权
    Austenitic stainless steel with improved resistance to corrosion by nitric acid 失效
    奥氏体不锈钢具有改善的耐硝酸腐蚀性能

    公开(公告)号:US4671929A

    公开(公告)日:1987-06-09

    申请号:US635104

    申请日:1984-07-27

    CPC分类号: C22C38/40 Y10S376/90

    摘要: An austenitic stainless steel exhibiting improved resistance to corrosion caused by nitric acid is disclosed, which consists essentially of:C: not more than 0.03% by weight, Si: 2-6% by weight,Mn: 0.1-8% by weight, Cr: 20-35% by weight,Ni: 17-50% by weight, Mg: not more than 0.02%,at least one of Nb, Ti and Ta in the total amount of 8.times.C(%) or more, but 1.0% by weight or less,S: not more than 0.003% by weight,Oxygen: not more than 0.003% by weight,N: not more than 0.03% by weight,P: not more than 0.02% by weight,Fe and incidental impurities: balancethe composition further satisfying the following relationships;-10.ltoreq.Ni(Bal).ltoreq.-0.1Cr(%).gtoreq.(7/4)Si(%)+16.5Mg(%)-0.75.times.S(%)-1.5.times.Oxygen(%).gtoreq.0wherein, Ni(Bal)=30.times.C(%)+0.5.times.Mn(%)+Ni(%)+8.2-1.1.times.[1.5.times.Si(%)+Cr(%)].

    摘要翻译: 本发明公开了一种奥氏体不锈钢,其耐硝酸腐蚀性提高,其基本上由以下组成:C:0.03重量%以下,Si:2-6重量%,Mn:0.1-8重量%,Cr :20-35重量%,Ni:17-50重量%,Mg:不大于0.02重量%,Nb,Ti和Ta中的至少一种总量为8×C(%)以上,1.0% 重量以下,S:0.003%以下,氧:0.003%以下,N:0.03质量%以下,P:0.02质量%以下Fe,杂质:平衡 该组合物还满足以下关系: -10%Ni(Bal)≤0.1Cr(%)> / =(7/4)Si(%)+ 16.5 Mg(%)-0.75xS(%) - 1.5×氧(%)> / = 0其中,Ni(Bal)= 30×C(%)+ 0.5×Mn(%)+ Ni(%)+ 8.2-1.1×[1.5×Si(%)+ Cr(%)]。

    Dual-phase stainless steel with improved resistance to corrosion by
nitric acid
    2.
    发明授权
    Dual-phase stainless steel with improved resistance to corrosion by nitric acid 失效
    两相不锈钢具有改善的抗硝酸腐蚀性能

    公开(公告)号:US4640817A

    公开(公告)日:1987-02-03

    申请号:US635108

    申请日:1984-07-27

    CPC分类号: C22C38/40

    摘要: A dual-phase stainless steel exhibiting improved resistance to corrosion caused by nitric acid is disclosed, which consists essentially of:C: not more than 0.02% by weight, Si: 2-6% by weight,Mn: 0.1-2% by weight, Cr: 20-35% by weight,Ni: 3-27% by weight, P: not more than 0.02% by weight,N: not more than 0.30% by weight,Fe and incidental impurities: balance the amount of ferrite to be 30-70% by volume.

    摘要翻译: 公开了一种显示出由硝酸引起的耐腐蚀性的双相不锈钢,其基本上由以下组成:C:不大于0.02重量%的Si:2-6重量%,Mn:0.1-2重量% ,Cr:20〜35重量%,Ni:3〜27重量%,P:0.02重量%以下,N:0.30重量%以下Fe及杂质:铁素体相对于 为30-70%(体积)。

    Zirconium-titanium and/or tantalum oxygen alloy
    3.
    发明授权
    Zirconium-titanium and/or tantalum oxygen alloy 失效
    锆钛和/或钽氧合金

    公开(公告)号:US5026521A

    公开(公告)日:1991-06-25

    申请号:US447843

    申请日:1989-12-08

    IPC分类号: C22C16/00

    CPC分类号: C22C16/00

    摘要: A zirconium alloy which has good creep strength and bending properties as well as improved corrosion resistance in nitric acid solutions of low, medium, and high concentrations and which can withstand stress corrosion cracking in highly concentrated nitric acid solutions even under a high anodic potential is disclosed. The zirconium alloy consists essentially of, by weight percent:one or both of Ti: 5.0-30% and Ta: 1.0-20%,Fe: not greater than 0.3%, Cr: not greater than 0.1%,Oxygen: 0.05-0.2%, N: not greater than 0.45%,H : not greater than 0.01%,one or more of W, V, and Mo: 0-3.0% in total, and the balance Zr and inevitable impurities.

    Austenitic stainless steel
    5.
    发明申请
    Austenitic stainless steel 有权
    奥氏体不锈钢

    公开(公告)号:US20050232805A1

    公开(公告)日:2005-10-20

    申请号:US11143610

    申请日:2005-06-03

    摘要: An austenitic stainless steel with minimized deformation by heating and cooling treatment after cold working, which consists of, % by mass, C: 0.03% or less, Si: 2 to 4%, Mn: 0.1 to 2%, P: 0.03% or less, S: 0.03% or less, Ni: 9 to 15%, Cr: 15 to 20%, N: 0.02 to 0.2%, Nb: 0.03% or less, each of Mo and Cu or a total of Mo and Cu: 0.2 to 4%, and the balance Fe and impurities, and satisfies the following formulas (1) and (2). This steel can also have good weldability when the following formula (3) is also satisfied in addition to the formulas (1) and (2); 16.9+6.9Ni+12.5Cu−1.3Cr+3.2Mn+9.3Mo−205C−38.5N−6.5Si−120Nb≧40  (1) 450−440(C+N)−12.2Si−9.5Mn−13.5Cr−20(Cu+Ni)−18.5Mo≦−90  (2) 8.2+30(C+N)+0.5Mn+Ni−1.1(1.5Si+Cr+Mo)+2.5Nb≦−0.8  (3) wherein each element symbol in the formulas (1), (2) and (3) represents the content, % by mass, of each element included in the steel.

    摘要翻译: 一种奥氏体不锈钢,其冷加工后的加热冷却处理变形最小,其质量%C:0.03%以下,Si:2〜4%,Mn:0.1〜2%,P:0.03% 较少,S:0.03%以下,Ni:9〜15%,Cr:15〜20%,N:0.02〜0.2%,Nb:0.03%以下,Mo和Cu:Mo: 0.2〜4%,余量为Fe和杂质,满足下式(1)和(2)。 除了式(1)和(2)之外,当满足以下式(3)时,该钢也可以具有良好的可焊性。 <?in-line-formula description =“In-line Formulas”end =“lead”?> 16.9 + 6.9Ni + 12.5Cu-1.3Cr + 3.2Mn + 9.3Mo-205C-38.5N-6.5Si-120Nb> = 40(1)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?> 440(C + N)-12.2Si-9.5Mn-13.5Cr-20(Cu + Ni)-18.5Mo <= - 90(2)<?在线公式描述=“在线公式”end =“ 尾部“?> <?in-line-formula description =”In-line Formulas“end =”lead“?> 8.2 + 30(C + N)+ 0.5Mn + Ni-1.1(1.5Si + Cr + Mo)+ 其中式(1),(2)和(3)中的每个元素符号表示式(1),(2)和(3)中的每个元素符号 钢中包含的每种元素的含量,质量%。

    FERRITE STAINLESS STEEL FOR USE IN PRODUCING UREA WATER TANK
    7.
    发明申请
    FERRITE STAINLESS STEEL FOR USE IN PRODUCING UREA WATER TANK 审中-公开
    用于生产尿素水罐的铁素不锈钢

    公开(公告)号:US20110110812A1

    公开(公告)日:2011-05-12

    申请号:US12737425

    申请日:2009-07-23

    IPC分类号: C22C38/28 C22C38/20 C22C38/26

    摘要: This ferrite stainless steel for use in producing a urea water tank includes: in terms of mass %, C: 0.05% or less; N: 0.05% or less; Si: 0.02 to 1.5%; Mn: 0.02 to 2%; Cr: 15 to 23%; and either one or both of Nb and Ti at a content within a range of 8(C+N) to 1% (herein, C and N represent the contents of C and N (expressed by mass %), respectively, and the numerical values shown in front of the atomic symbols represent constant numbers), with the remainder being iron and unavoidable impurities, wherein an effective amount of Cr expressed by any one of the following Equations (I), (II), and (III) is 15% or more (herein, the atomic symbols in Equations (I) to (III) represent the contents of the elements (expressed by mass %), and the numerical values shown in front of the atomic symbols represent constant numbers). Here, the effective amount of Cr=Cr+4Si−2Mn in the case where only Nb is contained, the effective amount of Cr=Cr+4Si−2Mn−10Ti in the case where only Ti is contained, and the effective amount of Cr=Cr+4Si−2Mn−(10Ti−3Nb) in the case where both of Nb and Ti are contained.

    摘要翻译: 用于生产尿素水箱的铁素体不锈钢包括:以质量%计,C:0.05%以下; N:0.05%以下; Si:0.02〜1.5% Mn:0.02〜2% Cr:15〜23% Nb和Ti中的任一种或两者的含量分别为8(C + N)〜1%(本文中,C和N分别表示C和N的含量(以质量%表示),数值 其余为铁和不可避免的杂质,其中由以下等式(I),(II)和(III)中的任何一个表示的有效量的Cr为15 %以上(这里,等式(I)至(III)中的原子符号表示元素的含量(以质量%表示),原子符号前面所示的数值表示常数)。 这里,在仅含有Nb的情况下,Cr = Cr + 4Si-2Mn的有效量,在仅含有Ti的情况下为Cr = Cr + 4Si-2Mn-10Ti的有效量,Cr的有效量 = Cr + 4Si-2Mn-(10Ti-3Nb)的情况下,含有Nb和Ti。

    FERRITE-AUSTENITE STAINLESS STEEL SHEET FOR STRUCTURAL COMPONENT EXCELLENT IN WORKABILITY AND IMPACT-ABSORBING PROPERTY AND METHOD FOR PRODUCING THE SAME
    8.
    发明申请
    FERRITE-AUSTENITE STAINLESS STEEL SHEET FOR STRUCTURAL COMPONENT EXCELLENT IN WORKABILITY AND IMPACT-ABSORBING PROPERTY AND METHOD FOR PRODUCING THE SAME 有权
    用于结构性组分的非铁素体不锈钢板,其工作性能和冲击吸收性能优良,并且其生产方法

    公开(公告)号:US20100294402A1

    公开(公告)日:2010-11-25

    申请号:US12735476

    申请日:2009-01-22

    IPC分类号: C21D6/00 C22C38/58

    摘要: This stainless steel sheet includes, in terms of mass %, C: 0.001 to 0.1%, N: 0.01 to 0.15%, Si: 0.01 to 2%, Mn: 0.1 to 10%, P: 0.05% or less, S: 0.01% or less, Ni: 0.5 to 5%, Cr: 10 to 25%, and Cu: 0.5 to 5%, with a remainder being Fe and unavoidable impurities, and contains a ferrite phase as a main phase and 10% or more of an austenite phase, wherein a work-hardening rate in a strain range of up to 30% is 1000 MPa or more which is measured by a static tensile testing and a difference between static and dynamic stresses which occur when 10% of deformation is caused is 150 MPa or more. This method for producing a stainless steel includes annealing a cold-rolled steel sheet under conditions where a holding temperature is set to be in a range of 950 to 1150° C. and a cooling rate until 400° C. is set to be in a range of 3° C./sec or higher.

    摘要翻译: 该不锈钢板以质量%计含有C:0.001〜0.1%,N:0.01〜0.15%,Si:0.01〜2%,Mn:0.1〜10%,P:0.05%以下,S:0.01 %以下,Ni:0.5〜5%,Cr:10〜25%,Cu:0.5〜5%,余量为Fe和不可避免的杂质,含有铁素体相为主相,10质量%以上 奥氏体相,其中通过静态拉伸试验测定的应变范围为30%以下的加工硬化率为1000MPa以上,当产生10%的变形时发生的静态和动态应力之间的差异为 150MPa以上。 这种不锈钢的制造方法包括在保持温度设定在950〜1150℃的范围内的冷轧钢板退火,直到400℃的冷却速度设定为 范围为3°C / sec以上。

    Austenitic stainless steel
    10.
    发明授权
    Austenitic stainless steel 有权
    奥氏体不锈钢

    公开(公告)号:US07101446B2

    公开(公告)日:2006-09-05

    申请号:US11143610

    申请日:2005-06-03

    IPC分类号: C22C38/00

    摘要: An austenitic stainless steel with minimized deformation by heating and cooling treatment after cold working, which consists of, % by mass, C: 0.03% or less, Si: 2 to 4%, Mn: 0.1 to 2%, P: 0.03% or less, S: 0.03% or less, Ni: 9 to 15%, Cr: 15 to 20%, N: 0.02 to 0.2%, Nb: 0.03% or less, each of Mo and Cu or a total of Mo and Cu: 0.2 to 4%, and the balance Fe and impurities, and satisfies the following formulas (1) and (2). This steel can also have good weldability when the following formula (3) is also satisfied in addition to the formulas (1) and (2); 16.9+6.9Ni+12.5Cu−1.3Cr+3.2Mn+9.3Mo−205C−38.5N−6.5Si−120Nb≧40  (1) 450−440(C+N)−12.2Si−9.5Mn−13.5Cr−20(Cu+Ni)−18.5Mo≦−90  (2) 8.2+30(C+N)+0.5Mn+Ni−1.1(1.5Si+Cr+Mo)+2.5Nb≦−0.8  (3) wherein each element symbol in the formulas (1), (2) and (3) represents the content, % by mass, of each element included in the steel.

    摘要翻译: 一种奥氏体不锈钢,其冷加工后的加热冷却处理变形最小,其质量%C:0.03%以下,Si:2〜4%,Mn:0.1〜2%,P:0.03% 较少,S:0.03%以下,Ni:9〜15%,Cr:15〜20%,N:0.02〜0.2%,Nb:0.03%以下,Mo和Cu:Mo: 0.2〜4%,余量为Fe和杂质,满足下式(1)和(2)。 除了式(1)和(2)之外,当满足以下式(3)时,该钢也可以具有良好的可焊性。 <?in-line-formula description =“In-line Formulas”end =“lead”?> 16.9 + 6.9Ni + 12.5Cu-1.3Cr + 3.2Mn + 9.3Mo-205C-38.5N-6.5Si-120Nb> = 40(1)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?> 440(C + N)-12.2Si-9.5Mn-13.5Cr-20(Cu + Ni)-18.5Mo <= - 90(2)<?在线公式描述=“在线公式”end =“ 尾部“?> <?in-line-formula description =”In-line Formulas“end =”lead“?> 8.2 + 30(C + N)+ 0.5Mn + Ni-1.1(1.5Si + Cr + Mo)+ 其中式(1),(2)和(3)中的每个元素符号表示式(1),(2)和(3)中的每个元素符号 钢中包含的每种元素的含量,质量%。