CN105132812A - Ferrite free-cutting stainless steel - Google Patents
Ferrite free-cutting stainless steel Download PDFInfo
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- CN105132812A CN105132812A CN201510554448.2A CN201510554448A CN105132812A CN 105132812 A CN105132812 A CN 105132812A CN 201510554448 A CN201510554448 A CN 201510554448A CN 105132812 A CN105132812 A CN 105132812A
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- stainless steel
- cutting
- free
- cutting stainless
- ferrite
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Abstract
The invention discloses ferrite free-cutting stainless steel. The stainless steel consists of the following components in percentage by weight: not more than 0.025% of C, 0.05-0.8% of Si, 0.5-0.8% of Mn, 15-20% of Cr, 0.02-0.04% of P, 0.01-0.1% of S, 0.05-0.5% of Ti, 0.04-0.06% of N, and 0.8-1.2% of Mo, with the balance being Fe and inevitable impurities. By virtue of adjusting the contents of Cr, S and Ti, the stainless steel is still better in free cutting performance while the stainless steel is ensured to be excellent in plasticity, toughness and corrosion resistance after the machining, so that the application range of the ferrite stainless steel is widened.
Description
Technical field
The present invention relates to stainless steel manufacturing technology, especially relate to a kind of ferritic free-cutting stainless steel.
Background technology
Ferritic stainless steel has the features such as thermal conductivity is large, the coefficient of expansion is little, good in oxidation resistance, stress corrosion resistant are excellent, is used for the component manufacturing the corrosion of resistance to air, water vapour, water and oxidizing acid.But because this stainless steel exists the defects such as plasticity difference, as-welded ductility and erosion resistance obviously reduce, machining cutting ability is poor, limit its range of application.In order to improve this stainless free-cutting machinability, to be typically employed in steel separately or compound adds the mode of sulphur, phosphorus, lead and other elements, but the poor effect of the stainless steel produced in plasticity, toughness, erosion resistance etc.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of ferritic free-cutting stainless steel having excellent plasticity, toughness, erosion resistance concurrently.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of ferritic free-cutting stainless steel, this stainless steel is grouped into by each one-tenth of following weight percents: C≤0.025%, Si:0.05-0.8%, Mn:0.5-0.8%, Cr:15-20%, P:0.02-0.04%, S:0.01-0.1%, Ti:0.05-0.5%, N:0.04-0.06%, Mo:0.8-1.2%, and surplus is Fe and inevitable impurity.
As preferred further, this stainless steel is grouped into by each one-tenth of following weight percents: C≤0.025%, Si:0.05-0.8%, Mn:0.5-0.8%, Cr:16-17.5%, P:0.02-0.04%, S:0.03-0.05%, Ti:0.2-0.35%, N:0.04-0.06%, Mo:0.8-1.2%, and surplus is Fe and inevitable impurity.
Compared with prior art, advantage of the present invention is: the present invention is by the content of adjustment Cr, S, Ti, under there is the prerequisite of excellent plasticity, toughness, erosion resistance after guaranteeing stainless steel processing, still there is good free cutting property, be conducive to the range of application expanding ferritic stainless steel.
Embodiment:
The present invention is further elaborated by the following examples, but these embodiments are not to limitation of the present invention.
Embodiment 1
A kind of ferritic free-cutting stainless steel, this stainless steel is grouped into by each one-tenth of following weight percents: C:0.021%, Si:0.09%, Mn:0.5%, Cr:15.5%, P:0.021%, S:0.01-0.1%, Ti:0.055%, N:0.04%, Mo:0.81%, and surplus is Fe and inevitable impurity.
Embodiment 2
A kind of ferritic free-cutting stainless steel, this stainless steel is grouped into by each one-tenth of following weight percents: C:0.018%, Si:0.12%, Mn:0.63%, Cr:16%, P:0.028%, S:0.012%, Ti:0.12%, N:0.04%, Mo:0.84%, and surplus is Fe and inevitable impurity.
Embodiment 3
A kind of ferritic free-cutting stainless steel, this stainless steel is grouped into by each one-tenth of following weight percents: C:0.011%, Si:0.23%, Mn:0.72%, Cr:17.5%, P:0.031%, S:0.03%, Ti:0.21%, N:0.044%, Mo:0.93%, and surplus is Fe and inevitable impurity.
Embodiment 4
A kind of ferritic free-cutting stainless steel, this stainless steel is grouped into by each one-tenth of following weight percents: C:0.015%, Si:0.17%, Mn:0.75%, Cr:17.5%, P:0.035%, S:0.035%, Ti:0.34%, N:0.052%, Mo:0.96%, and surplus is Fe and inevitable impurity.
Embodiment 5
A kind of ferritic free-cutting stainless steel, this stainless steel is grouped into by each one-tenth of following weight percents: C:0.009%, Si:0.76%, Mn:0.8%, Cr:18.2%, P:0.038%, S:0.06%, Ti:0.4%, N:0.058%, Mo:1.05%, and surplus is Fe and inevitable impurity.
According to the various embodiments described above alloy smelting, sampling detects, and finds that the tensile strength of institute's alloyage reaches 420N/mm
2above, corrosion resistance nature is better than SUS316 steel grade, and its waste cut materials of cutting generation is easily cataclasm simultaneously.
Claims (2)
1. a ferritic free-cutting stainless steel, it is characterized in that: this stainless steel is grouped into by each one-tenth of following weight percents: C≤0.025%, Si:0.05-0.8%, Mn:0.5-0.8%, Cr:15-20%, P:0.02-0.04%, S:0.01-0.1%, Ti:0.05-0.5%, N:0.04-0.06%, Mo:0.8-1.2%, surplus is Fe and inevitable impurity.
2. a kind of ferritic free-cutting stainless steel according to claim 1, it is characterized in that: this stainless steel is grouped into by each one-tenth of following weight percents: C≤0.025%, Si:0.05-0.8%, Mn:0.5-0.8%, Cr:16-17.5%, P:0.02-0.04%, S:0.03-0.05%, Ti:0.2-0.35%, N:0.04-0.06%, Mo:0.8-1.2%, surplus is Fe and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510554448.2A CN105132812A (en) | 2015-09-01 | 2015-09-01 | Ferrite free-cutting stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510554448.2A CN105132812A (en) | 2015-09-01 | 2015-09-01 | Ferrite free-cutting stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105132812A true CN105132812A (en) | 2015-12-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510554448.2A Pending CN105132812A (en) | 2015-09-01 | 2015-09-01 | Ferrite free-cutting stainless steel |
Country Status (1)
| Country | Link |
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| CN (1) | CN105132812A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5601664A (en) * | 1994-10-11 | 1997-02-11 | Crs Holdings, Inc. | Corrosion-resistant magnetic material |
| CN1518608A (en) * | 2001-05-15 | 2004-08-04 | �����Ƹ���ʽ���� | Ferritic stainless steel and martensitic stainless steel both being excellent in machinability |
| CN101153375A (en) * | 2006-09-29 | 2008-04-02 | 宝山钢铁股份有限公司 | Free-cutting ferritic stainless steel |
| CN101392355A (en) * | 2007-09-19 | 2009-03-25 | 大同特殊钢株式会社 | Free-cutting ferritic stainless steel |
| WO2012133681A1 (en) * | 2011-03-29 | 2012-10-04 | 新日鐵住金ステンレス株式会社 | Ferrite stainless steel exhibiting excellent corrosion resistance and strength in weld zones, and tig-welded structure |
-
2015
- 2015-09-01 CN CN201510554448.2A patent/CN105132812A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5601664A (en) * | 1994-10-11 | 1997-02-11 | Crs Holdings, Inc. | Corrosion-resistant magnetic material |
| CN1518608A (en) * | 2001-05-15 | 2004-08-04 | �����Ƹ���ʽ���� | Ferritic stainless steel and martensitic stainless steel both being excellent in machinability |
| CN101153375A (en) * | 2006-09-29 | 2008-04-02 | 宝山钢铁股份有限公司 | Free-cutting ferritic stainless steel |
| CN101392355A (en) * | 2007-09-19 | 2009-03-25 | 大同特殊钢株式会社 | Free-cutting ferritic stainless steel |
| WO2012133681A1 (en) * | 2011-03-29 | 2012-10-04 | 新日鐵住金ステンレス株式会社 | Ferrite stainless steel exhibiting excellent corrosion resistance and strength in weld zones, and tig-welded structure |
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Application publication date: 20151209 |