CN1584098A - Austenic stainless steel - Google Patents
Austenic stainless steel Download PDFInfo
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- CN1584098A CN1584098A CN 200410041285 CN200410041285A CN1584098A CN 1584098 A CN1584098 A CN 1584098A CN 200410041285 CN200410041285 CN 200410041285 CN 200410041285 A CN200410041285 A CN 200410041285A CN 1584098 A CN1584098 A CN 1584098A
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Abstract
A high manganese nickelous austenic stainless steel consists of carbon is less than or equal to 0.10wt%, silicon is less than or equal to 0.80wt%, manganese 8.5-10.00wt%, chromium 14.00-15.00wt%, nickel is less than or equal to 1.20wt%, phosphorus is less than or equal to 0.050wt%, sulfur is less than or equal to 0.030wt%, nitrogen is less than or equal to 0.20wt%, iron residue. Its advantages include low cost, good mechanics and manufacturing machining performance.
Description
Technical field
The present invention relates to a kind of austenitic stainless steel, especially a kind of high-manganses low-nickel austenitic stainless steel.
Background technology
At present, home and abroad stainless steel tube and kitchen utensils, tableware etc. still mostly use 300 to be and 200 be that stainless steel is made, such as stainless steel 304 and stainless steel 201, and the stainless steel of these trades mark contains higher chromium and nickel.Stainless chromium, the nickel content of 304 trades mark are respectively 17.54% and 8.86%; Stainless chromium, the nickel content of 201 trades mark are respectively 16.91% and 4.7%.Yet because chromium, nickel resources are relatively deficienter in China, thereby it is high to cause aforementioned stainless price to occupy.Therefore, the applicant thinks, for austenitic stainless steel, especially for the austenitic stainless steel of aforementioned applications, with its nickel, chromium composition, particularly the nickel composition rationally reduces, and the composition of manganese is done suitably to improve, add reasonable assembly, nickel resources that not only can saves valuable, reduce cost, but also can obtain the good mechanical performance other composition.
Certainly, in the high-manganses low-nickel field of Austenitic stainless steel, for the difference of purposes, the composition design of having nothing in common with each other.For example in the report of a kind of " Ultrapurification high nitrogen austenitic stainless steel and preparation method thereof " of announcing with publication number CN1480550A, be to be the high-nitrogen nickel-free Ultralow Carbon Stainless Steel of main characteristic with the corrosion-proof wear, this has just determined it that the alloy purity of raw materials is had relatively high expectations, and adopt the vacuum induction furnace apparatus, create under the atmosphere that contains N 〉=0.4 (Wt/%) and smelt; Moreover Cr, Mn, Mo content height, its manufacturing cost is higher.
Notification number " a kind of austenitic stainless steel " announced with CN1128246C and for example, it contains≤2.0%Mo and 0.2-1.5%AL, also add the Re element of 0.02-0.05%.Not only to raise the cost, and, bring disadvantageous effect can for the single austenite structure of acquisition because Mo, AL are ferrite former.
Summary of the invention
The objective of the invention is to provide a kind of having of under the weak erosive environment, using of being suitable for such as good mechanical performance, manufacturing austenitic stainless steel processing characteristics, cheap.
Another object of the present invention is will provide a kind of can further improve the cold rolling austenitic stainless steel that shapes performance.
The objective of the invention is to reach like this, a kind of austenitic stainless steel, its consist of (by weight)≤0.10% carbon ,≤0.80% silicon, 8.50～10.00% manganese, 14.00～15.00% chromium ,≤1.20% nickel ,≤0.050% phosphorus ,≤0.030% sulphur ,≤0.20% nitrogen, Yu Weitie.
Another object of the present invention reaches like this, a kind of austenitic stainless steel, its consist of (by weight)≤0.10% carbon ,≤0.80% silicon, 8.50～10.00% manganese, 14.00～15.00% chromium ,≤1.20% nickel ,≤0.050% phosphorus ,≤0.030% sulphur ,≤0.20% nitrogen ,≤2.00% bronze medal, Yu Weitie.
Austenitic stainless steel of the present invention, its component are (by weight) 0.07% carbon, 0.47% silicon, 9.42% manganese, 15.00% chromium, 0.93% nickel, 0.018% phosphorus, 0.015% sulphur, 0.13% nitrogen, 1.51% bronze medal, Yu Weitie.
Austenitic stainless steel of the present invention, it consists of (by weight) 0.075% carbon, 0.38% silicon, 9.30% manganese, 14.20% chromium, 1.10% nickel, 0.019% phosphorus, 0.013% sulphur, 0.12% nitrogen, 1.40% bronze medal, Yu Weitie.
Austenitic stainless steel of the present invention, it consists of (by weight) 0.075% carbon, 0.41% silicon, 9.18% manganese, 14.50% chromium, 1.02% nickel, 0.017% phosphorus, 0.012% sulphur, 0.15% nitrogen, 1.41% bronze medal, Yu Weitie.
Austenitic stainless steel of the present invention has the following advantages: 1) be suitable under weak corrosive environment and use, at the austenitic stainless steel that can replace such as fields such as Hardware fitting, kitchen utensils, tablewares 304,201; 2) at room temperature show good mechanical performance and good manufacturing processing characteristics; 3) save because of natural resources shortage causes expensive nickel to improve manganese content, thereby the price of austenitic stainless steel is minimized.
Embodiment
The applicant narrates and determines the reasons are as follows of above-mentioned main chemical scope:
1. carbon: carbon is strong formation and stable austenite and enlarge the element of austenitic area in austenitic stainless steel, so carbon plays an important role to forming austenite structure.So carbon will have certain degree.But when carbon is high, the plasticity when not only influencing cold working, and the corrosion resistance nature of steel also had disadvantageous effect.
2. silicon: silicon is the strong ferritic element that forms, and therefore for guaranteeing that stainless steel of the present invention obtains austenite structure, silicone content must be limited.
3. manganese: manganese is more weak austenite former, but has the effect of intensive stable austenite tissue, and improves the solubleness of nitrogen in steel.In low-nickel austenitic stainless steel, manganese is one of very important alloying element, normal adds in the steel with elements compounding such as nickel, nitrogen, to save nickel or replacement nickel.The manganese content range is to design for obtaining austenite structure in the austenitic stainless steel of the present invention.
4. chromium: chromium is topmost element in the stainless steel, is the important element that steel obtains rustless property, erosion resistance.The chromium content range of austenitic stainless steel of the present invention had both guaranteed that steel had good stainless corrosion-resistant, guaranteed to obtain austenite structure again.
5. nickel: nickel is strong formation and stable austenite and enlarge the element of austenitic area.The objective of the invention is to replace nickel with manganese, nitrogen.Therefore austenitic stainless steel nickel content of the present invention is lower, but in order to improve the hot and cold processing characteristics of steel, has still added≤1.20% nickel.
6. nitrogen: nitrogen is very strong formation and stable austenite and enlarge the element of austenitic area, but nitrogen instead of part nickel in austenitic stainless steel.Nitrogen belongs to the solution strengthening element, and the intensity that can improve austenitic stainless steel is not significantly damaged the plasticity and the toughness of steel.But when nitrogen content surpasses 0.20% (weight), the production and processing technology and the cold formability of steel there is disadvantageous effect.Nitrogen content of the present invention is controlled at≤0.20% (weight).Nitrogen adds can delay separating out of carbide, thereby its intergranular corrosion resistance performance is improved.
7. phosphorus: phosphorus is considered as harmful element, should be controlled at below 0.05% (weight) as far as possible.
8. sulphur: sulphur is considered as harmful element, should be controlled at below 0.03% (weight) as far as possible.
9. copper: copper appends it in steel of the present invention as alloying element, and main rising reduced cold working hardening tendency, and then improves the cold machine-shaping performance.But because of copper has the hot workability of remarkable reduction steel, particularly more obvious to the lower stainless steel influence of nickel content, so the content of copper is limited in≤2.0% (weight) in the austenitic stainless steel of the present invention.
Embodiment:
Austenitic stainless steel of the present invention can be used non-vacuum induction furnace, electric arc furnace smelting.The hot-work of ingot blank (forging, hot rolling) temperature range is 1130-1180 ℃, 1050 ℃-1120 ℃ of solution heat treatment temperature.
Austenitic stainless steel of the present invention is mainly produced hot rolled band, cold-strip, hot rolled plate and bar etc.
Three embodiment of austenitic stainless steel of the present invention are summarized in table one, and give the Chemical Composition contrast of the sample of austenitic stainless steel of the present invention and compared steel in this table, and wherein: compared steel A is 304, B is 201.
Table one (weight percent)
| Sample | Carbon | Manganese | Silicon | Chromium | Nickel | Copper | Nitrogen | Phosphorus | Sulphur | Iron | |
| Embodiment 1 | ?0.070 | ?9.42 | ?0.47 | ?15.00 | ?0.93 | ?1.51 | ?0.13 | ?0.018 | ?0.015 | Surplus | |
| Embodiment 2 | ?0.075 | ?9.30 | ?0.38 | ?14.20 | ?1.10 | ?1.40 | ?0.12 | ?0.019 | ?0.013 | Surplus | |
| Embodiment 3 | ?0.075 | ?9.18 | ?0.41 | ?14.50 | ?1.02 | ?1.41 | ?0.15 | ?0.017 | ?0.012 | Surplus | |
| Compared steel | ????A | ?0.053 | ?1.10 | ?0.17 | ?1?7.54 | ?8.86 | ?…… | ?…… | ?≤ ?0.035 | ?≤ ?0.030 | Surplus |
| ????B | ?0.055 | ?6.51 | ?0.51 | ?16.91 | ?4.7 | ?…… | ?0.15 | ?≤ ?0.035 | ?≤ ?0.030 | Surplus | |
The mechanical property of the excellence that austenitic stainless steel showed that above-mentioned three embodiment of the present invention obtain obviously is better than compared steel by table two illustrate, and wherein: compared steel A is 304, B is 201.
Table two
| Sample | The sample state | Description mm | Tensile strength sigma bMPa | Yield strength σ 0.2Mpa | Elongation δ 5c/o | Hardness HV | |
| The present invention | 1 | 1100 ℃ of continuous bright solution treatment | 0.48 steel band | ???876 | ???310 | ???35 | ?211 |
| ??2 | 1100 ℃ of continuous bright solution treatment | 0.48 steel band | ???875 | ???310 | ???35 | ?211 | |
| ??3 | 1100 ℃ of continuous bright solution treatment | 0.78 steel band | ???878 | ???310 | ???38 | ?215 | |
| Compared steel | ?A | Solid solution attitude: 1090 ℃ of-1120 ℃ of chillings | 1.20 steel band | ???625-700 | ???340-400 | ???40-70 | ?138-188 |
| ?B | 1050 ℃ of-1120 ℃ of continuous solution treatment | 0.60 steel band | ???758 | ???355 | ???67 | ?235 | |
Claims (5)
1, a kind of austenitic stainless steel, it is characterized in that its consist of (by weight)≤0.10% carbon ,≤0.80% silicon, 8.50～10.00% manganese, 14.00～15.00% chromium ,≤1.20% nickel ,≤0.050% phosphorus ,≤0.030% sulphur ,≤0.20% nitrogen, Yu Weitie.
2, austenitic stainless steel according to claim 1, it is characterized in that its consist of (by weight)≤0.10% carbon ,≤0.80% silicon, 8.50～10.00% manganese, 14.00～15.00% chromium ,≤1.20% nickel ,≤0.050% phosphorus ,≤0.030% sulphur ,≤0.20% nitrogen ,≤2.00% bronze medal, Yu Weitie.
3, austenitic stainless steel according to claim 2 is characterized in that its component is (by weight) 0.07% carbon, 0.47% silicon, 9.42% manganese, 15.00% chromium, 0.93% nickel, 0.018% phosphorus, 0.015% sulphur, 0.13% nitrogen, 1.51% bronze medal, Yu Weitie.
4, austenitic stainless steel according to claim 2 is characterized in that it consists of (by weight) 0.075% carbon, 0.38% silicon, 9.30% manganese, 14.20% chromium, 1.10% nickel, 0.019% phosphorus, 0.013% sulphur, 0.12% nitrogen, 1.40% bronze medal, Yu Weitie.
5, austenitic stainless steel according to claim 2 is characterized in that it consists of (by weight) 0.075% carbon, 0.41% silicon, 9.18% manganese, 14.50% chromium, 1.02% nickel, 0.017% phosphorus, 0.012% sulphur, 0.15% nitrogen, 1. 41% bronze medal, Yu Weitie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410041285 CN1584098A (en) | 2004-06-13 | 2004-06-13 | Austenic stainless steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410041285 CN1584098A (en) | 2004-06-13 | 2004-06-13 | Austenic stainless steel |
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| CN1584098A true CN1584098A (en) | 2005-02-23 |
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| CN 200410041285 Pending CN1584098A (en) | 2004-06-13 | 2004-06-13 | Austenic stainless steel |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100575526C (en) * | 2007-04-20 | 2009-12-30 | 宝山钢铁股份有限公司 | Nickel-free metastable austenitic stainless steel with TRIP effect |
| CN101270455B (en) * | 2007-03-23 | 2010-08-11 | 宝山钢铁股份有限公司 | 1000MPa grade nickel-saving type metastable austenite stainless steel |
| CN101892370B (en) * | 2009-05-21 | 2012-07-04 | 烨联钢铁股份有限公司 | Fe-Cr-Mn-N austenitic stainless steel with good hot workability and manufacturing method thereof |
| CN104120368A (en) * | 2014-06-26 | 2014-10-29 | 宝钢不锈钢有限公司 | High-strength austenitic stainless steel for automobile frames and manufacturing method thereof |
| CN104294176A (en) * | 2014-09-19 | 2015-01-21 | 东莞市迅盈精密五金有限公司 | Stainless steel nonmagnetic material and counterbalance prepared from same |
| CN110064892A (en) * | 2019-04-15 | 2019-07-30 | 浙江金石家居用品有限公司 | A kind of rapidoprint and its processing method of stainless steel tableware |
| CN110199048A (en) * | 2016-12-23 | 2019-09-03 | 株式会社Posco | Austenitic stainless steel converted products and its manufacturing method with excellent surface characteristic |
| CN111041349A (en) * | 2019-11-26 | 2020-04-21 | 中国石油天然气集团有限公司 | High-chromium alloy corrosion-resistant continuous pipe and preparation method thereof |
| CN112458380A (en) * | 2020-11-26 | 2021-03-09 | 东莞市灿煜金属制品有限公司 | Manufacturing method of ultra-flat low-magnetic stainless steel BF2 |
-
2004
- 2004-06-13 CN CN 200410041285 patent/CN1584098A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270455B (en) * | 2007-03-23 | 2010-08-11 | 宝山钢铁股份有限公司 | 1000MPa grade nickel-saving type metastable austenite stainless steel |
| CN100575526C (en) * | 2007-04-20 | 2009-12-30 | 宝山钢铁股份有限公司 | Nickel-free metastable austenitic stainless steel with TRIP effect |
| CN101892370B (en) * | 2009-05-21 | 2012-07-04 | 烨联钢铁股份有限公司 | Fe-Cr-Mn-N austenitic stainless steel with good hot workability and manufacturing method thereof |
| CN104120368A (en) * | 2014-06-26 | 2014-10-29 | 宝钢不锈钢有限公司 | High-strength austenitic stainless steel for automobile frames and manufacturing method thereof |
| CN104120368B (en) * | 2014-06-26 | 2018-11-06 | 宝钢不锈钢有限公司 | A kind of automobile frame high intensity austenitic stainless steel and its manufacturing method |
| CN104294176A (en) * | 2014-09-19 | 2015-01-21 | 东莞市迅盈精密五金有限公司 | Stainless steel nonmagnetic material and counterbalance prepared from same |
| CN110199048A (en) * | 2016-12-23 | 2019-09-03 | 株式会社Posco | Austenitic stainless steel converted products and its manufacturing method with excellent surface characteristic |
| CN110064892A (en) * | 2019-04-15 | 2019-07-30 | 浙江金石家居用品有限公司 | A kind of rapidoprint and its processing method of stainless steel tableware |
| CN111041349A (en) * | 2019-11-26 | 2020-04-21 | 中国石油天然气集团有限公司 | High-chromium alloy corrosion-resistant continuous pipe and preparation method thereof |
| CN112458380A (en) * | 2020-11-26 | 2021-03-09 | 东莞市灿煜金属制品有限公司 | Manufacturing method of ultra-flat low-magnetic stainless steel BF2 |
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