JPH01301836A - Corrosion-resistant soft magnetic material - Google Patents
Corrosion-resistant soft magnetic materialInfo
- Publication number
- JPH01301836A JPH01301836A JP13206588A JP13206588A JPH01301836A JP H01301836 A JPH01301836 A JP H01301836A JP 13206588 A JP13206588 A JP 13206588A JP 13206588 A JP13206588 A JP 13206588A JP H01301836 A JPH01301836 A JP H01301836A
- Authority
- JP
- Japan
- Prior art keywords
- machinability
- soft magnetic
- corrosion
- magnetic material
- cold forgeability
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007797 corrosion Effects 0.000 title claims abstract description 12
- 238000005260 corrosion Methods 0.000 title claims abstract description 12
- 239000000696 magnetic material Substances 0.000 title claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 3
- 229910052748 manganese Inorganic materials 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 abstract description 3
- 239000011162 core material Substances 0.000 abstract description 2
- 229910052758 niobium Inorganic materials 0.000 abstract description 2
- 229910052719 titanium Inorganic materials 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 3
- 229910052804 chromium Inorganic materials 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 12
- 239000000956 alloy Substances 0.000 description 12
- 230000005389 magnetism Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 238000010273 cold forging Methods 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 230000001771 impaired effect Effects 0.000 description 3
- 229910017060 Fe Cr Inorganic materials 0.000 description 2
- 229910002544 Fe-Cr Inorganic materials 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000915 Free machining steel Inorganic materials 0.000 description 1
- 229910001295 No alloy Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電磁弁、電子燃料噴射装置等に用し１られるＦ
ｅ−Ｃｒ系耐食性軟磁性材料に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to solenoid valves, electronic fuel injection devices, etc.
The present invention relates to an e-Cr based corrosion resistant soft magnetic material.
従来この種の腐食環境下で使用される軟磁性材料として
は、優れた耐食性と磁気特性を有する低Ｃ，Ｎの１３Ｃ
ｒ系（ＳＵＳ４１０） 、あるいは１ａＣｒ系（ＳＵＳ
４３０）のフェライトステンレスなどのいわゆる磁性ス
テンレスが広く使用されている。Conventionally, the soft magnetic material used in this type of corrosive environment is 13C with low C and N, which has excellent corrosion resistance and magnetic properties.
r series (SUS410) or 1aCr series (SUS
So-called magnetic stainless steels such as ferrite stainless steel (430) are widely used.
しかし、これらの合金は被削性が悪いので、部品加工時
の切削能率と、工具の寿命が著しく劣るため、快削性元
素であるＳ、Ｐｂ、Ｓｅ、Ｔｅ等を添加し、被削性と磁
気特性を兼ね備えた磁性ステンレスが実用化されている
。However, since these alloys have poor machinability, the cutting efficiency during parts machining and tool life are significantly inferior. Magnetic stainless steel, which has both magnetic properties, has been put into practical use.
しかるに最近は、機器の高性能化とともに製品のコスト
ダウンの厳しい要求にともない、部品加工の面でも従来
の切削加工主体から量産に適し、かつ安価な冷間鍛造に
よる成形加工が一般化しつつある。特性的にも従来の磁
性、被削性に加えて。However, in recent years, as equipment has improved in performance and there has been a strict demand for lower product costs, the conventional cutting process has been replaced by cold forging, which is suitable for mass production and is inexpensive, becoming more common in parts processing. In addition to the conventional magnetic properties and machinability.
とくに冷間鍛造性（以下冷鍛性と称す）の優れた磁性ス
テンレスの要望が強くなっている。In particular, there is an increasing demand for magnetic stainless steel with excellent cold forgeability (hereinafter referred to as cold forgeability).
しかし、従来の快削性の優れた磁性ステンレスでは、快
削性を付与する介在物が原因で、例えばＳ添加快削鋼で
は、ＭｎＳが加工方向に細長く伸長し、この伸長硫化物
に沿って、冷間鍛造時の加工工程で割れたり、使用中に
折損事故、ガス漏れが発生する、あるいは磁気特性が著
しく劣る等の問題点を有している。However, in conventional magnetic stainless steel with excellent free-cutting properties, inclusions that impart free-cutting properties cause MnS to elongate in the machining direction, for example in S-added free-cutting steel, and along these elongated sulfides. However, they have problems such as cracking during the cold forging process, breakage accidents and gas leaks during use, and extremely poor magnetic properties.
本発明は１以上の観点からＦｅ−１３％Ｃｒ系合金の磁
気特性と冷鍛性、被剛性に及ぼす各種添加元素の影響に
ついて研究した結果１合金中のＭｎおよびＳの適正含有
によるＭｎＳ量の適量化と、Ｍｇ添加による硫化物の均
一分散と球状化により、被削性を低下させることなく優
れた軟磁性と冷鍛性が得られること、および冷鍛性を害
するＳｉを低減することによって生じる磁性劣化をＡ１
の添加により改善できることを見出したことに基づくも
のである。The present invention is based on research on the effects of various additive elements on the magnetic properties, cold forgeability, and stiffness of Fe-13%Cr alloys from one or more viewpoints. By optimizing the amount and uniformly dispersing and spheroidizing sulfide by adding Mg, excellent soft magnetic properties and cold forgeability can be obtained without reducing machinability, and by reducing Si that impairs cold forgeability. A1 describes the magnetic deterioration that occurs.
This is based on the discovery that improvements can be made by adding .
すなわち本発明は、重量％にてＣｒ８〜１６％、Ｓｉ０
．３〜１，２％、Ｍｎ１０％以下、Ｓ ０．０１〜０，
０８％、 Ｃ０，０３％以下、Ｎ ０．０３％以下、Ａ
ｌ ０．１〜１．２％、Ｍｇｏ、ｏｏｉ〜０．０３％を
含有し、残部が実質的にＦｅからなることを特徴とする
耐食性軟磁性材料、および上記合金にさらにＭＯｌＮｂ
、■、Ｔｉのうち１種または２種以上を合計で０．１〜
２．５％含有することを特徴とする耐食性軟磁性材料で
ある。That is, in the present invention, Cr8 to 16%, Si0
．． 3-1.2%, Mn 10% or less, S 0.01-0,
08%, C0.03% or less, N 0.03% or less, A
A corrosion-resistant soft magnetic material characterized by containing 0.1 to 1.2% of l, Mgo, and 0.03% of ooi, with the remainder substantially consisting of Fe, and the above alloy further containing MOINb.
, ■, one or two or more of Ti in total from 0.1 to
It is a corrosion-resistant soft magnetic material characterized by containing 2.5%.
以下、本発明の成分限定理由について述べる。 The reasons for limiting the ingredients of the present invention will be described below.
（、ｒは本発明合金の耐食性を得る基本成分であり１本
発明の主旨である空気やガソリン等の弱い腐食環境下で
は、少なくとも部以上含有すれば良く、またＣｒ量の増
加に伴い１合金的には被剛性、冷鍛性が低下するため、
１６％を越えると実用上好ましくなく、Ｃｒは８〜１６
％とした。(, r is a basic component that provides the corrosion resistance of the alloy of the present invention, and in the mildly corrosive environment such as air or gasoline, which is the gist of the present invention, it is sufficient to contain at least 1 part or more, and as the amount of Cr increases, the alloy As a result, stiffness and cold forging properties are reduced.
If it exceeds 16%, it is not practical, and Cr is 8 to 16%.
%.
Ｓｉは、脱酸に必要な元素であり、磁気特性を著しく改
善する元素であるが、マトリックスを強化し硬くするた
め多量の含有は冷鍛性を害する。Si is an element necessary for deoxidation and significantly improves magnetic properties, but since Si strengthens and hardens the matrix, its inclusion in a large amount impairs cold forging properties.
このため、Ｓｉは０．３〜１．２％とした。For this reason, Si was set at 0.3 to 1.2%.
Ｍｎは、Ｓｉ同様脱酸に必要な元素であると同時に被削
性を付与するＭｎＳの形成に必要であるが、１．０％を
越えると、磁性を劣化させるため上限を１．０％とした
。Like Si, Mn is an element necessary for deoxidation and at the same time is necessary for the formation of MnS, which imparts machinability. However, if it exceeds 1.0%, it deteriorates magnetism, so the upper limit is set at 1.0%. did.
Ｓは本発明が目的とする被剛性を得るもので、少なくと
も０．０１％以上含有させる必要があるが、０．０８％
を越えると磁性を著しく害し、また本発明が目的とする
所望の冷鍛性も害するため、０．０１〜０．０８％とし
た。S is a substance that obtains the rigidity that is the objective of the present invention, and must be contained at least 0.01%, but 0.08%
If it exceeds this amount, the magnetism will be significantly impaired, and the desired cold forging properties which are the object of the present invention will also be impaired, so it is set at 0.01 to 0.08%.
ＡＩは本発明の主要な元素で冷鍛性をあまり損なわず磁
性の向上に大きな効果を有するもので、０．１％未満で
は十分な効果が得られず、一方１．２％を越えると被削
性および冷鍛性を害するため、０．１〜１．２％とした
。AI is the main element of the present invention, and has a great effect on improving magnetism without significantly impairing cold forgeability.If it is less than 0.1%, a sufficient effect cannot be obtained, while if it exceeds 1.2%, it may be damaged. Since it impairs machinability and cold forgeability, it was set at 0.1 to 1.2%.
Ｍｇは本発明が目的とするＭｎＳの球状化および均一分
散による被削性を損なうことなく磁性、冷鍛性の向上に
大きな効果を有するもので、 ０．００１％未満では十
分なる効果が得られず、一方０．０３％を越えるとその
効果は、飽和するとともに磁性および冷鍛性を害するた
め、 ｏ、ｏｏｔ〜０．０３％とした。Mg has a great effect on improving magnetism and cold forgeability without impairing machinability due to the spheroidization and uniform dispersion of MnS, which is the objective of the present invention, and if it is less than 0.001%, a sufficient effect can be obtained. On the other hand, if the content exceeds 0.03%, the effect will be saturated and the magnetism and cold forging property will be impaired.
Ｃ，Ｎは侵入型固溶元素で磁性を著しく害し、また炭窒
化物を形成し、冷鍛性を低下させるため、０．０３％以
下とした。C and N are interstitial solid solution elements that significantly impair magnetism and form carbonitrides, reducing cold forgeability, so the content was set to 0.03% or less.
また１Ｍｏ、Ｎｂ、Ｖ、ＴｉはＣ，Ｎを固定化し、それ
自身炭化物を微細化することにより、磁性および冷鍛性
を向上させるために含有せしめる合金元素であるが、１
種または２種以上を合計で０．１％未満ではその効果が
得られず、逆に２．５％を越えると被削性を著しく劣化
させるため、０．１〜２．５％とした。In addition, 1Mo, Nb, V, and Ti are alloying elements that are included to improve magnetism and cold forgeability by fixing C and N and refining carbides themselves.
If the total amount of one or more types is less than 0.1%, the effect cannot be obtained, and if it exceeds 2.5%, the machinability will be significantly deteriorated, so the content was set at 0.1 to 2.5%.
以下、本発明を実施例により詳細に説明する。 Hereinafter, the present invention will be explained in detail with reference to Examples.
第１表に示すＦｅ−Ｃｒ系合金を高周波誘導炉で溶解鋳
造後、９５０℃以上の温度で鍛造、熱間圧延を行ない１
５＋ｍφの棒に圧延し、８５０℃で６０分焼なましを行
なった。The Fe-Cr alloy shown in Table 1 is melted and cast in a high-frequency induction furnace, then forged at a temperature of 950°C or higher, and hot rolled.
It was rolled into a bar of 5+mφ and annealed at 850°C for 60 minutes.
第２表は、本発明合金９種類と比較合金３種類について
磁性、被削性、冷鍛性および耐食性を表わしたものであ
る。Table 2 shows the magnetism, machinability, cold forgeability, and corrosion resistance of nine types of alloys of the present invention and three types of comparison alloys.
第２表
磁性は、外径１４ｍφ、内径８ｍｍφ、高さ１０＋＋ｎ
Ｑのリングを採取し、１０００℃で３時間、Ｈ２ガス雰
囲気中で加熱後炉中冷却（冷却速度１５０℃／１１）を
行ない、保磁力（Ｈｅ）を測定した。Table 2 Magnetism: outer diameter 14mφ, inner diameter 8mmφ, height 10++n
A ring of Q was sampled, heated at 1000°C for 3 hours in an H2 gas atmosphere, cooled in a furnace (cooling rate 150°C/11), and the coercive force (He) was measured.
被削性は１４１１ＩＩＩＩφＸ２１ｍｍｆｆの試験片を
作製し、５Ｋ１１５１製のドリル（径は３ ｍｍ ）で
回転数１５０Ｏｒｐｍ、荷重１０ｋｇの条件で穿孔試験
を行ない、穴明けに要する時間で評価した。Machinability was evaluated by preparing a test piece of 1411IIIφX21 mmff and performing a drilling test using a 5K1151 drill (diameter: 3 mm) at a rotation speed of 150 rpm and a load of 10 kg, and the time required to drill the hole.
冷間鍛造性については、上記被削性と同じ試験片を用い
、６００ｔｏｎプレスによる冷間据込み試験を行ない、
ワレ発生時の圧縮比（以下限界加工率と称す）で示した
。Regarding cold forgeability, we conducted a cold upsetting test using a 600 ton press using the same test piece as for the machinability above.
It is expressed as the compression ratio at which cracking occurs (hereinafter referred to as the limit processing rate).
また耐食性については、５％ＮａＣ１溶液による塩水噴
霧試験を行ない、評価は発錆のない状態をＯ印１表面積
の２０１程度の発錆状態をΔ印で示した。Regarding corrosion resistance, a salt water spray test using a 5% NaCl solution was conducted, and the evaluation was made with the mark Δ indicating the state of no rusting and the state of rusting at about 201 of the surface area of 1 marked with O.
第２表から明らかなように、本発明合金１〜９は比較合
金に比べて優れた冷鍛性を有するとともに、良好な磁性
と被削性を兼ね備えており、とくにＡｌ、Ｍｇ添加によ
りその効果が著しいことがわかる。As is clear from Table 2, the alloys 1 to 9 of the present invention have superior cold forgeability compared to comparative alloys, as well as good magnetism and machinability, and the addition of Al and Mg is particularly effective. It can be seen that this is significant.
これに対し、Ｓ量の少ない比較合金１では、徨鍛性は優
れているが被剛性が劣り、一方、Ｓの多い比較合金２は
被剛性は良好であるが、磁性、ど散性が著しく劣ってい
る。またＳｉ量の多い比較合金３は磁性は良好であるが
、被削性、冷鍛性カ劣っており、いずれも−長、−短の
特性を有していて、本発明合金のように磁性、被削性、
冷鍛性および耐食性を兼備している合金はないことがわ
かる。On the other hand, Comparative Alloy 1, which has a small amount of S, has excellent hardenability but poor stiffness, while Comparative Alloy 2, which has a large amount of S, has good stiffness, but has significant magnetic and dissipative properties. Inferior. Comparative alloy 3, which has a large amount of Si, has good magnetism, but is inferior in machinability and cold forgeability, and both have -long and -short characteristics. , machinability,
It can be seen that there is no alloy that has both cold forgeability and corrosion resistance.
以上の如く、本発明のＦｅ−Ｃｒ系耐食性軟磁性材料は
、被削性、磁性を低下させることなく、優れた冷鍛性を
有し、電磁弁、電子燃料噴射装置の鉄心材料として高性
能化、および低コスト化に好適な特性を有し、工業上の
効果が極めて大きい。As described above, the Fe-Cr based corrosion-resistant soft magnetic material of the present invention has excellent cold forging properties without deteriorating machinability or magnetism, and has high performance as a core material for electromagnetic valves and electronic fuel injection devices. It has characteristics that are suitable for reduction in production and cost reduction, and has extremely large industrial effects.
Claims (1)
Ｍｎ１．０％以下、Ｓ０．０１〜０．０８％、Ｃ０．０
３％以下、Ｎ０．０３％以下にＡｌ０．１〜１．２％お
よびＭｇ０．００１〜０．０３％を含有し、残部が実質
的にＦｅからなることを特徴とする耐食性軟磁性材料。 ２ 重量％でＣｒ８〜１６％、Ｓｉ０．３〜１．２％、
Ｍｎ１．０％以下、Ｓ０．０１〜０．０８％、Ｃ０．０
３％以下、Ｎ０．０３％以下、Ａｌ０．１〜１．２％、
Ｍｇ０．００１〜０．０３％を含有し、さらにＭｏ、Ｎ
ｂ、Ｖ、Ｔｉのうち１種または２種以上を合計で０．１
〜２．５％含有し、残部が実質的にＦｅからなることを
特徴とする耐食性軟磁性材料。[Claims] 1% by weight: Cr8-16%, Si0.3-1.2%,
Mn 1.0% or less, S0.01-0.08%, C0.0
3% or less, N0.03% or less, Al 0.1-1.2% and Mg 0.001-0.03%, the remainder being substantially Fe. 2% by weight Cr8-16%, Si0.3-1.2%,
Mn 1.0% or less, S0.01-0.08%, C0.0
3% or less, N0.03% or less, Al0.1-1.2%,
Contains Mg0.001-0.03%, and further contains Mo, N
A total of 0.1 of one or more of b, V, and Ti
A corrosion-resistant soft magnetic material characterized by containing ~2.5% of Fe, with the remainder essentially consisting of Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13206588A JPH01301836A (en) | 1988-05-30 | 1988-05-30 | Corrosion-resistant soft magnetic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13206588A JPH01301836A (en) | 1988-05-30 | 1988-05-30 | Corrosion-resistant soft magnetic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01301836A true JPH01301836A (en) | 1989-12-06 |
Family
ID=15072692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13206588A Pending JPH01301836A (en) | 1988-05-30 | 1988-05-30 | Corrosion-resistant soft magnetic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01301836A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000015988A1 (en) * | 1998-09-10 | 2000-03-23 | Continental Teves Ag & Co. Ohg | Electromagnetic valve |
-
1988
- 1988-05-30 JP JP13206588A patent/JPH01301836A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000015988A1 (en) * | 1998-09-10 | 2000-03-23 | Continental Teves Ag & Co. Ohg | Electromagnetic valve |
| US6486761B1 (en) | 1998-09-10 | 2002-11-26 | Continental Teves Ag & Co. Ohg | Electromagnetic valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Davis | Alloying: understanding the basics | |
| US4814140A (en) | Galling resistant austenitic stainless steel alloy | |
| CN101880833A (en) | Stainless bearing steel adopting microalloying of rare earth and applicable to manufacturing miniature and small-size bearings and manufacturing method thereof | |
| EP0786140B1 (en) | Corrosion-resistant magnetic material | |
| WO2017207651A1 (en) | A precipitation haredning steel and its manufacture | |
| US5340534A (en) | Corrosion resistant austenitic stainless steel with improved galling resistance | |
| US4450006A (en) | Martensitic stainless steel | |
| JP4321974B2 (en) | Steel for high strength screws and high strength screws | |
| US6146475A (en) | Free-machining martensitic stainless steel | |
| KR20010083939A (en) | Cr-mn-ni-cu austenitic stainless steel | |
| US6036790A (en) | Non-tempered steel for mechanical structure | |
| US6620377B2 (en) | High hardness stainless steel for screws used in magnetic memory devices | |
| US5094923A (en) | Air hardening steel | |
| JPH0542493B2 (en) | ||
| CN102676882B (en) | Alloy material with wear-resistance, heat-resistance, corrosion-resistance, high hardness | |
| US5286311A (en) | Precipitation hardening ferritic-pearlitic steel valve | |
| GB2365022A (en) | Heat resistant steels | |
| CN111961991B (en) | TRIP type duplex stainless steel with ultrahigh strength-elongation product and preparation method thereof | |
| JPH01301836A (en) | Corrosion-resistant soft magnetic material | |
| JPH0261028A (en) | Corrosion-resistant and soft magnetic material | |
| US6123785A (en) | Product and process for producing constant velocity joint having improved cold workability and strength | |
| JPH10130794A (en) | Free cutting ferritic stainless steel with high strength | |
| JPH01104745A (en) | Corrosion-resisting soft-magnetic material | |
| JP2611992B2 (en) | Corrosion resistant soft magnetic material | |
| JPS6323261B2 (en) |