JP3439866B2 - Ferritic stainless steel with excellent corrosion resistance and weldability - Google Patents
Ferritic stainless steel with excellent corrosion resistance and weldabilityInfo
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- JP3439866B2 JP3439866B2 JP04864095A JP4864095A JP3439866B2 JP 3439866 B2 JP3439866 B2 JP 3439866B2 JP 04864095 A JP04864095 A JP 04864095A JP 4864095 A JP4864095 A JP 4864095A JP 3439866 B2 JP3439866 B2 JP 3439866B2
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- corrosion resistance
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- ferritic stainless
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐食性および溶接性に
優れるフェライト系ステンレス鋼に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to ferritic stainless steel having excellent corrosion resistance and weldability.
【０００２】[0002]
【従来の技術】一般に、フェライト系ステンレス鋼は、
オーステナイト系ステンレス鋼に比べると耐食性や耐銹
性に劣るという欠点がある。この欠点を克服するため
に、従来、フェライト系ステンレス鋼中にTiやNbなどを
複合添加して固溶Ｃ, 固溶Ｎを低減させることにより、
耐銹性を向上させる方法（特公昭62−3224号公報) 、あ
るいは、フェライト系ステンレス鋼中のＰ, Ｓを特殊な
精錬法により低減させ耐銹性を向上させる方法( 特公平
４−65141 号公報) などが提案されているが、これらに
は以下に述べるような欠点があった。まず、Ti, Nbを複
合添加する特公昭62−3224号公報に開示の従来技術にお
いては、耐銹性を悪化させるAlを0.01wt％以下に制限し
ているため、脱酸不足となって清浄度が悪化する。そし
て、場合によっては耐孔食性に悪影響を及ぼす危険性も
あった。一方、不純物元素を制御する特公平４−65141
号公報に開示の技術は、CaC2＋CaF2系フラックスを溶鋼
中へ吹き込むという特殊な精錬法を行わなければなら
ず、これはコストアップを招くだけでなく、有毒ガスで
あるホスフィンを発生し、作業者の人体への悪影響が懸
念される。2. Description of the Related Art Generally, ferritic stainless steel is
Compared with austenitic stainless steel, it has the drawback of being inferior in corrosion resistance and rust resistance. In order to overcome this drawback, it has hitherto been possible to reduce the amount of solid solution C and the amount of solid solution N by adding Ti and Nb to ferritic stainless steel in combination.
A method for improving rust resistance (Japanese Patent Publication No. 62-3224) or a method for reducing P and S in ferritic stainless steel by a special refining method to improve rust resistance (Japanese Patent Publication No. 4-65141). However, they have the following drawbacks. First, in the prior art disclosed in Japanese Patent Publication No. 62-3224, in which Ti and Nb are added in combination, Al, which deteriorates rust resistance, is limited to 0.01 wt% or less. The degree gets worse. In some cases, there is a risk of adversely affecting the pitting corrosion resistance. On the other hand, Japanese Patent Publication No.
The technology disclosed in the publication has to carry out a special refining method of blowing CaC 2 + CaF 2 based flux into molten steel, which not only causes an increase in cost, but also generates toxic gas phosphine, There is concern about adverse effects on the human body of workers.
【０００３】[0003]
【発明が解決しようとする課題】従来のフェライト系ス
テンレス鋼は、上述したように種々の問題点を抱えてお
り、用途の一層の拡大を図るには、こうした問題点の解
決が必要であった。そこで、本発明の目的は、従来技術
の考え方をより一層発展させることで、耐食性および溶
接性に優れるフェライト系ステンレス鋼を安価に得る技
術を確立することにある。The conventional ferritic stainless steel has various problems as described above, and it is necessary to solve these problems in order to further expand its applications. . Then, the objective of this invention is to further develop the idea of a prior art, and to establish the technique which can obtain the ferritic stainless steel excellent in corrosion resistance and weldability at low cost.
【０００４】[0004]
【課題を解決するための手段】発明者らは、上記課題解
決のために、まず、耐食性に及ぼす種々の元素の影響に
ついて調査し、以下に述べるような知見を得た。
Al脱酸されたフェライト系ステンレス鋼は、TiとNb
を複合添加すると耐食性が向上する。とくにこの傾向は
Nb：0.2 超wt％の条件のときに顕著である。
フェライト系ステンレス鋼は、Ｓが少ないほど耐食
性が向上する。しかし、Ｓ：0.001 wt％未満では溶接時
の溶け込み性が著しく悪化する。
フェライト系ステンレス鋼は、Mgを0.0003wt％以上
添加すると、このMgがＳと結合して安定な化合物MgＳを
形成してＳを無害化し、耐食性を向上させる。[Means for Solving the Problems] In order to solve the above problems, the inventors first investigated the effects of various elements on corrosion resistance, and obtained the following findings. Al deoxidized ferritic stainless steel is
When added together, the corrosion resistance is improved. Especially this tendency
Nb: Notable under the condition of more than 0.2 wt%. In ferritic stainless steels, the corrosion resistance improves as the S content decreases. However, if S: less than 0.001 wt%, the meltability during welding is significantly deteriorated. When 0.0003 wt% or more of Mg is added to ferritic stainless steel, this Mg combines with S to form a stable compound MgS, making S harmless and improving the corrosion resistance.
【０００５】本発明は、上記知見に基づいて合金設計し
たものであって、このような考え方の下に構成されるフ
ェライト系ステンレス鋼では、耐食性と溶接性との両方
の特性を向上させることができる。すなわち、本発明
は、
Ｃ：0.05wt%以下、 Si：1.5wt%以下、
Mn：2.0wt%以下、 Cr：11〜30wt%、
Ti：0.1wt%〜1.0wt%、 Nb：0.2超〜0.7wt%、
Mg：0.0003〜0.05%、 Al：0.005〜0.5wt%、
Ｎ：0.05wt%以下、 Ｐ：0.05wt%以下、
Ｏ：0.005wt%以下およびＳ：0.001超〜0.03wt%
を含み、残部Feおよび不可避的不純物からなり、かつ酸
化物系介在物と硫化物系介在物の和よりなる介在物に関
しての清浄度が0.01〜0.04%であることを特徴とする耐
食性および溶接性に優れるフェライト系ステンレス鋼、
Ｃ：0.05wt%以下、 Si：1.5wt%以下、
Mn：2.0wt%以下、 Cr：11〜30wt%、
Ti：0.1wt%〜1.0wt%、 Nb：0.2超〜0.7wt%、
Mg：0.0003〜0.05%、 Al：0.005〜0.5wt%、
Ｎ：0.05wt%以下、 Ｐ：0.05wt%以下、
Ｏ：0.005wt%以下およびＳ：0.001超〜0.03wt%
を含み、さらに、Cu、NiおよびMoのうちの１種または２
種以上をそれぞれ3.0wt%以上を上限として含有し、残部
Feおよび不可避的不純物からなる耐食性および溶接性に
優れるフェライト系ステンレス鋼である。なお、上記
に記載の鋼は、酸化物系介在物と硫化物系介在物の和よ
りなる介在物に関しての清浄度が0.01〜0.04%であるこ
とが好ましい。The present invention is an alloy design based on the above findings, and in a ferritic stainless steel constructed under such an idea, both the corrosion resistance and the weldability can be improved. it can. That is, the present invention is C: 0.05 wt% or less, Si: 1.5 wt% or less, Mn: 2.0 wt% or less, Cr: 11 to 30 wt%, Ti: 0.1 wt% to 1.0 wt%, Nb: more than 0.2 to 0.7. wt%, Mg: 0.0003 to 0.05%, Al: 0.005 to 0.5 wt%, N: 0.05 wt% or less, P: 0.05 wt% or less, O: 0.005 wt% or less, and S: more than 0.001 to 0.03 wt%, Ri Do the balance Fe and unavoidable impurities, and acid
Inclusions consisting of the sum of sulfide-based inclusions and sulfide-based inclusions
Ferritic stainless steels, having excellent corrosion resistance and weldability you wherein the cleanliness is 0.01 to 0.04% of and C: 0.05 wt% or less, Si: 1.5 wt% or less, Mn: 2.0 wt% or less, Cr: 11-30wt%, Ti: 0.1wt% -1.0wt%, Nb: over 0.2-0.7wt%, Mg: 0.0003-0.05%, Al: 0.005-0.5wt%, N: 0.05wt% or less, P: 0.05 wt% or less, O: 0.005 wt% or less and S: more than 0.001 to 0.03 wt%, and further, one or two of Cu, Ni and Mo.
Contains at least 3.0 wt% of each species as the upper limit, and the balance
It is a ferritic stainless steel consisting of Fe and unavoidable impurities and excellent in corrosion resistance and weldability. Note that the steel according to the above SL <br/> is preferably cleanliness regarding inclusions consisting sum of oxide inclusions and sulfide inclusions is from 0.01 to 0.04%.
【０００６】[0006]
【作用】次に、本発明にかかるフェライト系ステンレス
鋼の成分組成が上記のように限定される理由につき具体
的に説明する。
Ｃ：0.05wt％以下、
Ｃは、フェライト系ステンレス鋼にあっては、固溶限が
小さく、主としてCr炭化物として析出し、粒界腐食を引
き起こすため、0.05wt％以下に制限する。好ましくは、
0.01wt％以下にするのがよい。Next, the reason why the composition of the ferritic stainless steel according to the present invention is limited as described above will be described in detail. C: 0.05 wt% or less C is a ferritic stainless steel having a small solid solution limit and is mainly precipitated as Cr carbide to cause intergranular corrosion. Therefore, C is limited to 0.05 wt% or less. Preferably,
It should be 0.01 wt% or less.
【０００７】Si：1.5 wt％以下、
Siは、鋼表面に安定なSiO2の保護被膜を形成し、耐酸化
性を高めるため、好ましくは0.1 wt％以上含有させる。
ただし、このSiをあまり多量に添加すると、靱性を低下
させ加工性を阻害するため、1.5 wt％以下とした。好ま
しくは 0.5wt％以下にするのがよい。Si: 1.5 wt% or less. Si forms a stable SiO 2 protective film on the steel surface and enhances oxidation resistance, so Si is preferably contained in an amount of 0.1 wt% or more.
However, if too much Si is added, the toughness decreases and the workability is impaired, so the content was made 1.5 wt% or less. It is preferably 0.5 wt% or less.
【０００８】Mn：2.0 wt％以下、
Mnは、鋼の脱酸および脱硫のために適量、好ましくは0.
1 wt％以上を添加するが、過度に添加すると耐酸化性を
損なうことから、上限を2.0 wt％とした。Mn: 2.0 wt% or less, Mn is an appropriate amount for deoxidizing and desulfurizing steel, preferably 0.1%.
1 wt% or more is added, but if added excessively, the oxidation resistance is impaired, so the upper limit was made 2.0 wt%.
【０００９】Cr：11〜30wt％、
Crは、耐食性および高温腐食性を確保する上で不可欠な
成分であり、11wt％以上は必要である。しかし、30wt％
を超えるとその効果が飽和する上、加工性および靱性の
低下を招くので、11〜30wt％の範囲に限定する。好まし
くは13〜25wt％の範囲がよい。Cr: 11 to 30 wt%, Cr is an essential component for ensuring corrosion resistance and high temperature corrosion resistance, and 11 wt% or more is necessary. But 30wt%
If it exceeds 0.1%, the effect is saturated and the workability and toughness are deteriorated. Therefore, it is limited to the range of 11 to 30 wt%. The range of 13 to 25 wt% is preferable.
【００１０】
Ti：0.1 〜1.0 wt％、Nb：0.2 超〜0.7 wt％、
TiおよびNbはいずれも、ＣおよびＮと結合して、Ti
（Ｃ，Ｎ）およびNb（Ｃ，Ｎ）の析出物をつくり、結晶
粒を微細化するとともに母相中の固溶ＣおよびＮを低減
して靱性および強度を高めるという共通した作用を発揮
する成分である。しかしながら、Ti：0.1 wt％未満では
靱性および強度の改善効果が顕れず、一方 1.0wt％を超
えると、金属間化合物が多量に析出して靱性を損なうと
共に加工性を損なうことから、Tiは 0.1〜1.0 wt％とす
る。また、Nbについても、同様の理由から 0.2超〜0.7
wt％の範囲とするが、特に加工性を損なうことから、Nb
の上限は 0.7wt％とし、これらを複合添加する。なお、
Ti, Nbの好ましい範囲は、Ti：0.1 〜0.4 wt％、Nb：0.
2 超〜0.6 wt％である。Ti: 0.1-1.0 wt%, Nb: more than 0.2-0.7 wt%, Ti and Nb are both combined with C and N to form Ti.
(C, N) and Nb (C, N) precipitates are formed, and crystal grains are made finer, and the solid solution C and N in the matrix phase are reduced, thereby exhibiting a common action of enhancing toughness and strength. It is an ingredient. However, if Ti: less than 0.1 wt%, the effects of improving toughness and strength are not manifested, while if over 1.0 wt%, a large amount of intermetallic compounds precipitate, impairing toughness and workability, so Ti is 0.1 ~ 1.0 wt% In addition, Nb also exceeds 0.2 to 0.7 for the same reason.
The range is wt%, but Nb
The upper limit is 0.7wt%, and these are added in combination. In addition,
The preferable ranges of Ti and Nb are Ti: 0.1 to 0.4 wt% and Nb: 0.
More than 2 ~ 0.6 wt%.
【００１１】Mg：0.0003〜0.05wt％
Mgは、下記の反応により、安定な化合物MgＳを形成し、
耐食性に悪影響を及ぼすＳを無害化する。
Mg ＋ Ｓ ＝ MgＳ …(1)
特にこのような作用は、0.0003wt％以上の添加によって
生じ、一方、0.05wt％よりも多くなると靱性の低下を招
くので、Mgは0.0003〜0.05wt％の範囲、好ましくは0.00
04〜0.02wt％を添加する。Mg: 0.0003 to 0.05 wt% Mg forms a stable compound MgS by the following reaction,
The S that adversely affects the corrosion resistance is rendered harmless. Mg + S = MgS (1) In particular, such an action is caused by the addition of 0.0003 wt% or more, while on the other hand, if it exceeds 0.05 wt%, the toughness decreases, so Mg is in the range of 0.0003 to 0.05 wt%. , Preferably 0.00
04-0.02wt% is added.
【００１２】Al：0.005 〜0.5 wt％
Alは、Ｎと結合してAlN を形成し、母相中のＮを低減し
て靱性および強度を高めるだけでなく、脱酸剤としても
重要である。しかし、含有量が0.005 wt％未満では、効
果が得られず、一方0.5 wt％をこえると、製品のリジン
グ性を劣化させることから、0.005 〜0.5 wt％の範囲と
した。好ましい範囲は0.01〜0.2 wt％である。Al: 0.005-0.5 wt% Al combines with N to form AlN, which not only reduces N in the matrix to improve toughness and strength, but is also important as a deoxidizing agent. However, if the content is less than 0.005 wt%, the effect is not obtained, while if it exceeds 0.5 wt%, the ridging property of the product is deteriorated, so the range was made 0.005 to 0.5 wt%. The preferred range is 0.01 to 0.2 wt%.
【００１３】Ｎ：0.05wt％以下、
Ｎについては、固溶Ｎを少なくすることによって靱性を
向上させる成分である。特にＮ含有量が0.05wt％を超え
ると、靱性を著しく損なうことから、0.05wt％以下に抑
制する。好ましくは0.02wt％以下がよい。
Ｐ：0.05wt％以下
Ｐは、熱間加工性の点から少ないことが望ましく、0.05
wt％以下、好ましくは0.04wt％以下に抑制する。N: 0.05 wt% or less, N is a component that improves the toughness by reducing the solid solution N. In particular, if the N content exceeds 0.05 wt%, the toughness is significantly impaired, so the N content is suppressed to 0.05 wt% or less. It is preferably 0.02 wt% or less. P: 0.05 wt% or less P is preferably small from the viewpoint of hot workability.
Wt% or less, preferably 0.04 wt% or less.
【００１４】Ｏ：0.005 wt％以下
Ｏの含有量が高いと、非金属介在物の数が増加して、強
度、靱性および溶接性を損なうことから、0.005 wt％を
上限とした。
Ｓ：0.001 超〜0.03wt％
Ｓは、熱間加工性および耐食性の点から少ない方が望ま
しが、少なすぎると溶接時の溶け込み性を著しく損なう
ことから、0.001 超wt％以上は必要である。したがって
Ｓは、0.001 超〜0.03wt％の範囲、好ましくは 0.001超
〜0.02wt％、より好ましくは0.0015〜0.02wt％、さらに
好ましい範囲は 0.002〜0.02wt％である。O: 0.005 wt% or less If the content of O is high, the number of non-metallic inclusions increases and the strength, toughness and weldability are impaired, so 0.005 wt% was made the upper limit. S: more than 0.001 to 0.03 wt% S is desired to be small from the viewpoint of hot workability and corrosion resistance, but if it is too small, the meltability during welding is significantly impaired, so 0.001 wt% or more is necessary. . Therefore, S is in the range of more than 0.001 to 0.03 wt%, preferably more than 0.001 to 0.02 wt%, more preferably 0.0015 to 0.02 wt%, and still more preferably 0.002 to 0.02 wt%.
【００１５】なお、本発明においては、上記の各成分の
ほかに、耐食性や加工性の向上のために、Cu，Niおよび
Moのいずれか少なくとも１種以上を各特性の強化元素と
して、それぞれ 3.0wt％を上限として添加してもよい。
また、同様の目的で、ＷやSn, Co, Ｖなどを 3.0wt％を
上限として添加することも可能である。In the present invention, in addition to the above components, Cu, Ni and
At least one of Mo may be added as a strengthening element for each characteristic, and 3.0 wt% may be added as an upper limit.
For the same purpose, W, Sn, Co, V, etc. can be added with 3.0 wt% as the upper limit.
【００１６】また、本発明にかかるフェライト系ステン
レス鋼は、酸化物系介在物および硫化物系介在物の和よ
りなる介在物に関しての清浄度が0.01〜0.04％を示すも
のである。この理由は、上記の清浄度を0.01％よりも下
げるためには、特殊精錬法(CaC2＋CaF2系フラックス吹
込みなど) を行わなければならず、これはコストアップ
を招くだけでなく、有毒ガスであるホスフィンを発生
し、作業者の人体への悪影響も懸念され、好ましい方法
とは言えない。一方、清浄度が0.04％以上では、耐食性
を損なうので好ましくない。従って、本発明鋼では、特
殊な精錬法を行う必要がなくかつ耐食性の向上を図るた
めに、上記介在物清浄度を0.01〜0.04％に維持する。Further, the ferritic stainless steel according to the present invention has a cleanliness of 0.01 to 0.04% with respect to inclusions made of the sum of oxide inclusions and sulfide inclusions. The reason for this is that in order to reduce the above-mentioned cleanliness below 0.01%, a special refining method (such as CaC 2 + CaF 2 system flux blowing) must be carried out, which not only causes an increase in cost but also There is a concern that phosphine, which is a poisonous gas, will be generated and the human body of the worker may be adversely affected. On the other hand, if the cleanliness is 0.04% or more, the corrosion resistance is impaired, which is not preferable. Therefore, in the steel of the present invention, the inclusion cleanliness is maintained at 0.01 to 0.04% in order to improve the corrosion resistance without the need for a special refining method.
【００１７】[0017]
【実施例】表１に示す成分組成の鋼（No.1〜15) を連続
鋳造して鋼片としたのち、この鋼片を熱間圧延, 冷間圧
延ならびに必要な焼鈍を含む常法に従う処理によって、
厚さ 0.6mmの製品板とした。そして、得られた製品板に
ついて溶接性試験を行った。この試験において、耐食性
試験は、ディップアンドドライテストによった。この試
験による結果は、H2O 4200ml, NaCl≧ 210ｇ、 NaCl2・
2 H2O 210ｇ、 Na2SO4 2ｇ、 Na2SO31ｇ、Na2S2O3
0.4ｇ、 pＨ9.3 の水溶液中に試料を２秒間浸漬後、100
秒間乾燥する操作を 100回繰返した後の試料全面積に
対する発銹面積百分率をｘとしたときの３（２−log
ｘ）をレイティングナンバーとして示したものである。
また、溶接性試験は、溶接速度 300 mm/min , 電流45
Ａ，ＴＩＧ溶接したものについてのＸ線試験結果から、
溶け込み不良発生率（20回のうちの不良発生回数の％)
で示したものである。EXAMPLE Steels (No. 1 to 15) having the composition shown in Table 1 are continuously cast into steel pieces, and the steel pieces are subjected to a conventional method including hot rolling, cold rolling and necessary annealing. Depending on the processing
The product plate has a thickness of 0.6 mm. And the weldability test was done about the obtained product board. In this test, the corrosion resistance test was a dip and dry test. The results of this test are: H 2 O 4 200ml, NaCl ≧ 210g, NaCl 2 ·
2 H 2 O 210 g, Na 2 SO 4 2 g, Na 2 SO 3 1 g, Na 2 S 2 O 3
Immerse the sample in an aqueous solution of 0.4 g, pH 9.3 for 2 seconds, then
After the operation of drying for 100 seconds was repeated 100 times, 3 (2-log
x) is shown as a rating number.
The weldability test was conducted at a welding speed of 300 mm / min and a current of 45
From the X-ray test results for the A and TIG welded products,
Percentage of defective penetration (% of defective occurrences out of 20)
It is shown in.
【００１８】表２に示すとおり、比較例のようにNb, Ti
を複合添加することなく、しかもNbが0.2 wt％未満で
は、レイティングナンバーで表される耐食性が悪い。一
方、Mgを0.01wt％添加した例では耐食性が一層向上して
いるのがわかる。また、図１に示すとおり、Ｓが0.001
wt％以上で、溶接時の溶け込み不良欠陥発生率が著しく
減少することがわかる。As shown in Table 2, as in the comparative example, Nb, Ti
If the Nb content is less than 0.2 wt% without complex addition of Nb, the corrosion resistance represented by the rating number is poor. On the other hand, it can be seen that the corrosion resistance is further improved in the case where 0.01 wt% of Mg is added. Further, as shown in FIG. 1, S is 0.001
It can be seen that, when the content is wt% or more, the incidence rate of defective penetration defects during welding is significantly reduced.
【００１９】[0019]
【表１】 [Table 1]
【００２０】[0020]
【表２】 [Table 2]
【００２１】[0021]
【発明の効果】以上説明したように本発明は、耐食性な
らびに溶接性に優れたフェライト系ステンレス鋼を提供
することができ、しかもそれを安価に製造することがで
きる。INDUSTRIAL APPLICABILITY As described above, the present invention can provide a ferritic stainless steel excellent in corrosion resistance and weldability and can be manufactured at low cost.
【図１】ステンレス鋼の耐食性試験と溶接性試験に及ぼ
すＳ％との関係を示すグラフ。FIG. 1 is a graph showing the relationship between the corrosion resistance test of stainless steel and the S% that affects the weldability test.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 丹野 真吾 神奈川県川崎市川崎区小島町４番２号 日本冶金工業株式会社 川崎製造所内 (56)参考文献 特開 平８−104950（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C22C 38/00 - 38/60 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Shingo Tanno 4-2 Kojima-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa Nippon Metallurgical Industry Co., Ltd. Kawasaki Plant (56) Reference JP-A-8-104950 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) C22C 38/00-38/60
Claims (3)
化物系介在物と硫化物系介在物の和よりなる介在物に関
しての清浄度が0.01〜0.04%であることを特徴とする耐
食性および溶接性に優れるフェライト系ステンレス鋼。1. C: 0.05 wt% or less, Si: 1.5 wt% or less, Mn: 2.0 wt% or less, Cr: 11 to 30 wt%, Ti: 0.1 wt% to 1.0 wt%, Nb: more than 0.2 to 0.7 wt%. %, Mg: 0.0003 to 0.05%, Al: 0.005 to 0.5wt%, N: 0.05wt% or less, P: 0.05wt% or less, O: 0.005wt% or less, and S: more than 0.001 to 0.03wt%, and the balance Ri Do of Fe and unavoidable impurities, and acid
Inclusions consisting of the sum of sulfide-based inclusions and sulfide-based inclusions
Ferritic stainless steel cleanliness and has excellent be that corrosion resistance and weldability characterized in that a 0.01 to 0.04 percent.
3.0wt%以上を上限として含有し、 残部Feおよび不可避的不純物からなる耐食性および溶接
性に優れるフェライト系ステンレス鋼。2. C: 0.05 wt% or less, Si: 1.5 wt% or less, Mn: 2.0 wt% or less, Cr: 11 to 30 wt%, Ti: 0.1 wt% to 1.0 wt%, Nb: more than 0.2 to 0.7 wt%. %, Mg: 0.0003 to 0.05%, Al: 0.005 to 0.5 wt%, N: 0.05 wt% or less, P: 0.05 wt% or less, O: 0.005 wt% or less, and S: more than 0.001 to 0.03 wt%, and further , Cu, Ni and Mo, respectively, or one or more of
A ferritic stainless steel containing up to 3.0 wt% as the upper limit and consisting of the balance Fe and unavoidable impurities and having excellent corrosion resistance and weldability.
在物と硫化物系介在物の和よりなる介在物に関しての清
浄度が0.01〜0.04%である耐食性および溶接性に優れる
フェライト系ステンレス鋼。3. The steel according to claim 2, wherein the cleanliness of inclusions composed of the sum of oxide-based inclusions and sulfide-based inclusions is 0.01 to 0.04%, which is excellent in corrosion resistance and weldability. Stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04864095A JP3439866B2 (en) | 1995-03-08 | 1995-03-08 | Ferritic stainless steel with excellent corrosion resistance and weldability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04864095A JP3439866B2 (en) | 1995-03-08 | 1995-03-08 | Ferritic stainless steel with excellent corrosion resistance and weldability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08246105A JPH08246105A (en) | 1996-09-24 |
| JP3439866B2 true JP3439866B2 (en) | 2003-08-25 |
Family
ID=12808980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04864095A Expired - Fee Related JP3439866B2 (en) | 1995-03-08 | 1995-03-08 | Ferritic stainless steel with excellent corrosion resistance and weldability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3439866B2 (en) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2896270A1 (en) * | 2012-09-14 | 2015-07-22 | Saint-Gobain Glass France | Pane having an electrical connection element |
| EP2896270B1 (en) * | 2012-09-14 | 2017-04-05 | Saint-Gobain Glass France | Pane with electric connection element |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08246105A (en) | 1996-09-24 |
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