CN101338403A - Nickel-saving manganese-nitrogen-containing austenitic stainless steel - Google Patents
Nickel-saving manganese-nitrogen-containing austenitic stainless steel Download PDFInfo
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- CN101338403A CN101338403A CNA2008100602123A CN200810060212A CN101338403A CN 101338403 A CN101338403 A CN 101338403A CN A2008100602123 A CNA2008100602123 A CN A2008100602123A CN 200810060212 A CN200810060212 A CN 200810060212A CN 101338403 A CN101338403 A CN 101338403A
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Abstract
The invention discloses a nickel-saving austenite stainless steel containing manganese and nitrogen. The chemical components of the nickel-saving austenite stainless steel containing manganese and nitrogen are as follows: equal to or less than 0.10 percent of C, 8.0 to 10.0 percent of Mn, equal to less than 0.050 percent of P, equal to or less than 0.010 percent of S, 15.50 to 17.0 percent of Cr, 1.50 to 3.0 percent of Ni, 0.15 to 0.25 percent of N, 1.5 to 2.5 percent of Cu and the rest is Fe; wherein, the C is preferably to be 0.04 to 0.06 percent; the Mn is preferably to be 9.0 to 10.0 percent; the Cr is preferably to be 15.5 to 16.0 percent; the Ni is preferably to be 1.8 to 2.0 percent; the N is preferably to be 0.18 to 0.20 percent; the Cu is preferably to be 1.8 to 2.0 percent. The nickel-saving austenite stainless steel containing manganese and nitrogen can replace the stainless steel of 18-8 type under a common atmosphere environment and has the characteristics of being capable of nickel saving, low cost, good hot plasticity and easy processing.
Description
Technical field
The present invention relates to stainless material, be specifically related to a kind of nickel-saving manganese-nitrogen-containing austenitic stainless steel.
Background technology
The austenitic stainless steel of state's internal segment nickel mainly is 200 series as 201,200Cu etc. at present, nickel content General N i is 3.50～5.00% in meeting the joint nickel steel kind of GB, 204Cu steel grade in the U.S. mark is a kind of cold heading steel, though Ni is also lower, for satisfying cold-heading, its intensity can not be high, and nitrogen content is not high, the austenite structure instability, there is deficiency in (main thermoplasticity) on processing characteristics, is difficult at home promote.The 18-8 steel of domestic good processability, good corrosion resistance costs an arm and a leg owing to influenced by the nickel valency, and requiring in some erosion resistances is not in the very high environment, and comparing with the chromium manganese steel of low nickel does not have advantage.And the 200 Series Steel chromium content that exist on the market are lower, also have deficiency on corrodibility, are subjected to certain limitation in the application.
Summary of the invention
Technical problem to be solved by this invention just provides a kind of nickel-saving manganese-nitrogen-containing austenitic stainless steel, and it has under the general atmosphere environment can substitute 18-8 type stainless steel, and joint nickel, and with low cost, thermoplasticity is good, is easy to machining characteristics.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: a kind of nickel-saving manganese-nitrogen-containing austenitic stainless steel is characterized in that: Chemical Composition: C≤0.10%; Si:0.3～0.6%, Mn 8.0～10.0%; P≤0.050%; S≤0.010%; Cr 15.50～17.0%; Ni 1.50～3.0%; N 0.15～0.25%; Cu1.5～2.5%; All the other are iron.
Wherein C is preferably 0.04～0.06%.Mn is preferably 9.0～10.0%.Cr is preferably 15.5～16.0%.Ni is preferably 1.8～2.0%.N is preferably 0.18～0.20%.Cu is preferably 1.8～2.0%.
Stainless material of the present invention adopts said ratio, has reduced the content of nickel, can save cost greatly, compares with 304 stainless steels, and price has descended about 45%, and nitrogen, manganese content improves is to replace nickel to increase austenite structure, has also increased the intensity of steel simultaneously.Because steel has stable austenite structure, thermoplasticity is better, and the adding of copper has improved its cold-formed property greatly.This steel is higher than 304 on intensity, good wear resistance is arranged, and good rustless property is arranged under general environment.Austenitic stainless steel of the present invention can replace 304 steel under the general environment in the widespread use of industrial circle energy, easily is processed into plate, wire rod, bar or other Stainless Steel Productss.
Embodiment
A kind of nickel-saving manganese-nitrogen-containing austenitic stainless steel, its Chemical Composition is: C≤0.10%; Si 0.30～0.60%; Mn 8.0～10.0%; P≤0.050%; S≤0.010%; Cr 15.50～17.0%; Ni 1.50～3.0%; N0.15～0.25%; Cu 1.5～2.5%; All the other are iron.Wherein C is preferably 0.04～0.06%.Mn is preferably 9.0～10.0%.Cr is preferably 15.5～16.0%.Ni is preferably 1.8～2.0%.N is preferably 0.18～0.20%.Cu is preferably 1.8～2.0%.
Nickel-saving manganese-nitrogen-containing austenitic stainless steel production of the present invention can be adopted following technical process: batching → electric furnace slightly refines → converts steel → AOD refining (slag that removes slag → decarburization → slag making → prereduction → draw → secondary slag making refining) → tapping → die casting → grinding of steel ingot → cogging → reconditioning → tandem rolling wire rod → pickling → finishing → packing → warehouse-in.
Stainless Steel Alloy of the present invention is to utilize carbon drop, low nickel, and the prescription of manganese addition nitrogen obtains a kind of excellent property, the austenitic stainless steel that processibility is good.In the Stainless Steel Alloy element, nickel, carbon, manganese, nitrogen, copper etc. are austenite formers, and chromium, silicon are ferrite formers, and for falling material cost, main is to fall nickel.As everyone knows, carbon and nitrogen formation austenite ability are 30 times of nickel, and carbon should not be too high, otherwise the Corrosion of Stainless Steel performance can not get guaranteeing, adding nitrogen by raising manganese so only guarantees owing to fall the austenite unstable that nickel causes, manganese is not only austenite former, also can improve the solubleness of nitrogen in steel, increases the stability of austenite structure in steel greatly; The adding of copper is at first because copper also is to form the austenite element, but ability a little less than, secondly copper can reduce cold hardening in the cold working of austenitic stainless steel, improves cold-formed property.
Embodiment 1:
Its Chemical Composition of nickel-saving manganese-nitrogen-containing austenitic stainless steel of the present invention is: C:0.08%; Si:0.45%; Mn:10.0%; P:0.050%; S:0.006%; Cr:17.0%; Ni:3.0%; N:0.25%; Cu:2.5%; All the other are iron.
Embodiment 2:
Its Chemical Composition of nickel-saving manganese-nitrogen-containing austenitic stainless steel of the present invention is: C:0.06%; Si:0.40%; Mn 9.0%; P:0.040%; S:0.003%; Cr 16.0%; Ni 1.50%; N 0.20%; Cu 2.0%; All the other are iron.
Embodiment 3:
Its Chemical Composition of nickel-saving manganese-nitrogen-containing austenitic stainless steel of the present invention is: C:0.04%; Si:0.30%; Mn 8.0%; P:0.030%; S:0.001%; Cr 15.5%; Ni 2.0%; N 0.15%; Cu 1.5%; All the other are iron.
Application examples: utilizing electric arc furnace to add the refining of AOD stove and produce stainless steel ingot, is the stainless steel wire rod of φ 5.5mm through producing diameter after the cogging on high-speed rod-rolling mill, pickling after 1020 ℃ of solution treatment.Go up lubricated carrier, carry out wire drawing, make the wire rod of φ 3mm, do stainless wire mesh and do ornamental enclosing and block, also can directly be processed into the stainless steel polishing ball, replace 304 and be applied in Abrasive Industry in φ 5.5 wire rod blankings.Its Chemical Composition % is: C:0.042%; Si 0.35%; Mn 9.7%; P:0.029%; S:0.001%; Cr 15.6%; Ni 1.85%; N 0.185%; Cu 1.88%; All the other are iron.
Its mechanical property such as following table:
| Tensile strength (Mpa) | A％ | Z％ |
| 760 | 58.5 | 73.5 |
Claims (7)
1, a kind of nickel-saving manganese-nitrogen-containing austenitic stainless steel is characterized in that: Chemical Composition: C≤0.10%; Mn8.0～10.0%; P≤0.050%; S≤0.010%; Cr 15.50～17.0%; Ni 1.50～3.0%; N0.15～0.25%; Cu 1.5～2.5%; All the other are iron.
2, according to the described a kind of nickel-saving manganese-nitrogen-containing austenitic stainless steel of claim 1, it is characterized in that: C is preferably 0.04～0.06%.
3, according to the described a kind of nickel-saving manganese-nitrogen-containing austenitic stainless steel of claim 1, it is characterized in that: Mn is preferably 9.0～10.0%.
4, according to the described a kind of nickel-saving manganese-nitrogen-containing austenitic stainless steel of claim 1, it is characterized in that: Cr is preferably 15.5～16.0%.
5, according to the described a kind of nickel-saving manganese-nitrogen-containing austenitic stainless steel of claim 1, it is characterized in that: Ni is preferably 1.8～2.0%.
6, according to the described a kind of nickel-saving manganese-nitrogen-containing austenitic stainless steel of claim 1, it is characterized in that: N is preferably 0.18～0.20%.
7, according to the described a kind of nickel-saving manganese-nitrogen-containing austenitic stainless steel of claim 1, it is characterized in that: Cu is preferably 1.8～2.0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100602123A CN101338403A (en) | 2008-03-31 | 2008-03-31 | Nickel-saving manganese-nitrogen-containing austenitic stainless steel |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100602123A CN101338403A (en) | 2008-03-31 | 2008-03-31 | Nickel-saving manganese-nitrogen-containing austenitic stainless steel |
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| CN101338403A true CN101338403A (en) | 2009-01-07 |
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| CNA2008100602123A Pending CN101338403A (en) | 2008-03-31 | 2008-03-31 | Nickel-saving manganese-nitrogen-containing austenitic stainless steel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936702A (en) * | 2012-11-23 | 2013-02-20 | 四川金广技术开发有限公司 | Nickel-saving stainless steel panel and manufacturing method thereof |
| CN114686784A (en) * | 2022-04-02 | 2022-07-01 | 四川罡宸不锈钢有限责任公司 | Nickel-saving austenitic stainless steel material and preparation method thereof |
-
2008
- 2008-03-31 CN CNA2008100602123A patent/CN101338403A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936702A (en) * | 2012-11-23 | 2013-02-20 | 四川金广技术开发有限公司 | Nickel-saving stainless steel panel and manufacturing method thereof |
| CN114686784A (en) * | 2022-04-02 | 2022-07-01 | 四川罡宸不锈钢有限责任公司 | Nickel-saving austenitic stainless steel material and preparation method thereof |
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Open date: 20090107 |