CN108220822A - A kind of HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL - Google Patents
A kind of HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL Download PDFInfo
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- CN108220822A CN108220822A CN201810034533.XA CN201810034533A CN108220822A CN 108220822 A CN108220822 A CN 108220822A CN 201810034533 A CN201810034533 A CN 201810034533A CN 108220822 A CN108220822 A CN 108220822A
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- Prior art keywords
- stainless steel
- high strength
- strength non
- steel
- magnetic stainless
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention discloses a kind of HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL, N, Cr, Ni, Mn are included at least in component, by weight percentage：N ＞ 0.31%, Cr 16%~19%, Ni ＞ 2%, Mn 1%~3%.The present invention is anti-oxidant using Cr, it is anticorrosive, Ni is formed and stable austenite, and Mn is the element that austenite is promoted to generate, and expands Cr Ni austenitic areas, improve its physical property, the austenite structure of nitrogen and manganese cooperation stabilized steel, improves the performance of steel, and the content of N saves the nickel in austenitic stainless steel, simultaneously as gap solid solution element, the intensity and corrosion resistance of austenitic stainless steel can be effectively improved；The control of said components effectively restores and stable austenite tissue, so as to eliminate magnetism, forms HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL.
Description
Technical field
The present invention relates to a kind of magnetism-free stainless steel more particularly to a kind of HIGH STRENGTH NON-MAGNETIC STAINLESS STEELs.
Background technology
Present scientific and technical innovation is maked rapid progress, and all trades and professions intelligence is the trend and direction of future development, and stainless steel is produced
Product without magnetic require it is more and more, in the environment of no magnetic carry out intelligent information transmission it is more and more common, and require it is higher and higher,
Existing 304（The typical trade mark of austenitic stainless steels be 0Cr18Ni9, i.e., 304）Ingredient is inclined when stainless steel product is due to smelting
Improper a variety of causes of Denging are analysed or be heat-treated, can cause to generate a small amount of martensite or ferritic structure in 304 stainless steel of austenite.This
Sample, will carry faint magnetism in 304 stainless steels, and this faint magnetism can cause intelligent data transmission mistake or in
It is disconnected, it can not meet high standard properties of product needs.
For 304 magnetism-free stainless steel high capability instrument instrument products, a kind of intelligent remote information that can meet is needed to transmit institute
The HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL product needed, ZL201010615604.9 are given in a kind of HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL stainless
Weight percent shared by steel each component is respectively:C is 0.4~0.6, Si≤1.0, Mn are 17.50~20.0, P≤
0.025th, S≤0.015, N are 0.05~0.2, Cr is 4.0~6.0, Ni≤1, remaining is Fe.However disclosed in this patent
Technical solution in high capability instrument instrument product, can not still meet intelligent remote information and transmit required high-intensity non-magnetic
The demand of stainless steel.
Invention content
In order to solve the problems, such as current techniques, the object of the present invention is to provide a kind of HIGH STRENGTH NON-MAGNETIC STAINLESS STEELs.
In order to achieve the above objectives, the technology used in the present invention means are：A kind of HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL, in component
Including at least N, Cr, Ni, Mn, by weight percentage：N ＞ 0.31%, Cr 16%~19%, Ni ＞ 2%, Mn 1%~3%.
Further, the weight percent of the N is 0.40% ＞ N ＞ 0.31%.
Further, the 12% ＞ Ni ＞ 2%.
Further, weight percent shared by the HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL each component is respectively:C 0.04~
0.08th, Si≤1.0, Mn 1.0~3.0, P≤0.035, S≤0.025,0.31 ＜ N ＜ 0.4, Cr 16.0~19.0,2.0
＜ Ni ＜ 12.0, remaining is Fe.
Further, the heat treatment of the HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL is in 1100 DEG C of no less than 2h solutionizing of temperature, detection
Without precipitated phase in crystal boundary and crystal boundary.
The beneficial effects of the present invention are：Anti-oxidant using Cr, anticorrosive, Ni is formed and stable austenite, Mn are to promote
The element of austenite generation, expands Cr-Ni austenitic areas, improves the austenite group of its physical property, nitrogen and manganese cooperation stabilized steel
It knits, improves the performance of steel, the content of N saves the nickel in austenitic stainless steel, while is used as gap solid solution element, can have
Improve the intensity and corrosion resistance of austenitic stainless steel in effect ground；The control of said components effectively restores and stable austenite tissue,
So as to eliminate magnetism.
Specific embodiment
Embodiment 1
A kind of HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL includes at least N, Cr, Ni, Mn in component, by weight percentage：N ＞ 0.31%, Cr
16%~19%, Ni ＞ 2%, Mn 1%~3%.
The magnetism of 304 stainless steels caused by completely eliminate reason in the prior art, by restoring stable austenite
Tissue is one of them reliable method for eliminating magnetism.Nitrogen is strong austenite former, can save austenite not
Nickel in rust steel；Nitrogen is the element of gap solid solution again, can effectively improve the intensity of austenitic stainless steel, can also improve stainless steel
Corrosion resistance.But the number of nitrogen in steel content is affected to Ovshinsky scale of construction.Scope of disclosure N is in the prior art
0.05~0.35%, the range that a variety of different technologies use is different, and the effect of generation is naturally different, and inventor makes due to considering
It is solved the problems, such as with nitrogen content magnetic, then how to be reasonable using nitrogen content, do not provided in the prior art.
Inventor has found under study for action, when nitrogen in steel content is less than 0.31%, at low magnetic field intensity (3979~4475 A/m)
Under the conditions of just show high magnetic conductivity；When nitrogen in steel content is more than 0.31%, magnetic field intensity is up to 96.68 × 103A/m,
304 steel still show high diamagnetic performance.With increasing for nitrogen in steel content, magnetic field intensity increase, the magnetic conductivity variation of steel is not
Greatly, the low-level below Ur≤1.0014 can be stablized, show good diamagnetic performance.
And nitrogen in steel content not only has an impact magnetic conductivity, also has an impact to the structural state of steel.By verification, we send out
It is existing, when be 0.15% to nitrogen content, 0.26%, 0.31% 3 kind of different steel carry out structure observation, measure the ferrite of 8 visual fields
Amount, averages.The result shows that when nitrogen in steel content is 0.15%, ferrite content average out to 21.37% in steel；Nitrogen content is
During 0.26 %, ferrite content average out to 15.47% in steel；When nitrogen content is 0.31%, ferrite content average out to 1.47% in steel；Nitrogen
When content is more than 0.31%, ferrite is not found in steel, i.e., whole austenitizings.
Design and non-magnetic requirement with reference to alloying component, Cr are indispensable anti-oxidant, erosion-resisting High Purities
Element, Ni are the main alloy elements to be formed with stable austenite, and Mn improves it to expanding Cr-Ni type stainless steels austenitic area
Physical property has good effect, and nitrogen and manganese cooperation are added in acts on bigger to the austenite structure of stabilized steel, moreover it is possible to improve and carry
Therefore the performance of Gao Gang, the control of mentioned component is combined with the use of N, form HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL.
Embodiment 2
It is 0.40% ＞ N ＞ 0.31% as the weight percent to the preferred of embodiment 1, the N.Pass through the explanation of embodiment 1
As can be seen that N has to be larger than 0.31%, but it is not to be the bigger the better, the defects of forming stomata or shrinkage porosite is excessively used.
Embodiment 3
As to the further preferred of embodiment 2, the 12% ＞ Ni ＞ 2%.
Embodiment 4
As a specific presentation to embodiment 1, weight percent shared by the HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL each component is distinguished
For:C 0.04~0.08, Si≤1.0, Mn 1.0~3.0, P≤0.035, S≤0.025,0.31 ＜ N ＜ 0.4, Cr
16.0~19.0,2.0 ＜ Ni ＜ 12.0, remaining is Fe.
Embodiment 5
As to given by embodiment 4 product process when it is preferred, the heat treatment of the HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL is in temperature
1100 DEG C of no less than 2h solutionizing, are detected in crystal boundary and crystal boundary without precipitated phase.
Application embodiment is only intended to illustrate technical characteristic disclosed in the present application, and those skilled in the art pass through simple
Carried out change is replaced, still falls within the range that the application is protected.
Claims (5)
1. a kind of HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL, it is characterised in that：N, Cr, Ni, Mn are included at least in component, by weight percentage：N
＞ 0.31%, Cr 16%~19%, Ni ＞ 2%, Mn 1%~3%.
2. HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL according to claim 1, it is characterised in that：The weight percent of the N is 0.40%
＞ N ＞ 0.31%.
3. HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL according to claim 2, it is characterised in that：The 12% ＞ Ni ＞ 2%.
4. HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL according to claim 1, it is characterised in that：The HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL each group
Point shared weight percent is respectively:C 0.04~0.08, Si≤1.0, Mn 1.0~3.0, P≤0.035, S≤
0.025th, 0.31 ＜ N ＜ 0.4, Cr 16.0~19.0,2.0 ＜ Ni ＜ 12.0, remaining is Fe.
5. HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL according to claim 4, it is characterised in that：The heat of the HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL
Processing is in 1100 DEG C of no less than 2h solutionizing of temperature, detection crystal boundary and crystal boundary without precipitated phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810034533.XA CN108220822A (en) | 2018-01-15 | 2018-01-15 | A kind of HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810034533.XA CN108220822A (en) | 2018-01-15 | 2018-01-15 | A kind of HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL |
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|---|---|
| CN108220822A true CN108220822A (en) | 2018-06-29 |
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| CN201810034533.XA Pending CN108220822A (en) | 2018-01-15 | 2018-01-15 | A kind of HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144006A (en) * | 2020-09-12 | 2020-12-29 | 高安市恒瑞源实业有限公司 | High-strength wear-resistant non-magnetic hard alloy and preparation method thereof |
| CN115141986A (en) * | 2021-03-31 | 2022-10-04 | 中国科学院金属研究所 | Austenitic steel for ultralow-temperature structure and preparation process thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6220855A (en) * | 1985-07-19 | 1987-01-29 | Daido Steel Co Ltd | Non-magnetic high-strength stainless steel and its production |
| JPS6369950A (en) * | 1986-09-09 | 1988-03-30 | Kawasaki Steel Corp | Nonmagnetic austenitic stainless steel having high hardness |
| JPS63169362A (en) * | 1986-12-29 | 1988-07-13 | Aichi Steel Works Ltd | Nonmagnetic tool steel |
| JPS63199849A (en) * | 1987-02-13 | 1988-08-18 | Daido Steel Co Ltd | Tendon material for oil ring and its production |
| CN1942596A (en) * | 2004-01-13 | 2007-04-04 | 三菱重工业株式会社 | Austenitic stainless steel, method for producing same and structure using same |
| CN101384744A (en) * | 2005-06-28 | 2009-03-11 | 优劲&阿隆兹法国公司 | Strip made of stainless austenitic steel with bright surface and excellent mechanical properties |
-
2018
- 2018-01-15 CN CN201810034533.XA patent/CN108220822A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6220855A (en) * | 1985-07-19 | 1987-01-29 | Daido Steel Co Ltd | Non-magnetic high-strength stainless steel and its production |
| JPS6369950A (en) * | 1986-09-09 | 1988-03-30 | Kawasaki Steel Corp | Nonmagnetic austenitic stainless steel having high hardness |
| JPS63169362A (en) * | 1986-12-29 | 1988-07-13 | Aichi Steel Works Ltd | Nonmagnetic tool steel |
| JPS63199849A (en) * | 1987-02-13 | 1988-08-18 | Daido Steel Co Ltd | Tendon material for oil ring and its production |
| CN1942596A (en) * | 2004-01-13 | 2007-04-04 | 三菱重工业株式会社 | Austenitic stainless steel, method for producing same and structure using same |
| CN101384744A (en) * | 2005-06-28 | 2009-03-11 | 优劲&阿隆兹法国公司 | Strip made of stainless austenitic steel with bright surface and excellent mechanical properties |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144006A (en) * | 2020-09-12 | 2020-12-29 | 高安市恒瑞源实业有限公司 | High-strength wear-resistant non-magnetic hard alloy and preparation method thereof |
| CN115141986A (en) * | 2021-03-31 | 2022-10-04 | 中国科学院金属研究所 | Austenitic steel for ultralow-temperature structure and preparation process thereof |
| CN115141986B (en) * | 2021-03-31 | 2023-11-10 | 中国科学院金属研究所 | Austenitic steel for ultralow-temperature structure and preparation process thereof |
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Application publication date: 20180629 |