CN1654696A - Austenitic stainless steel - Google Patents
Austenitic stainless steel Download PDFInfo
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- CN1654696A CN1654696A CN 200510063018 CN200510063018A CN1654696A CN 1654696 A CN1654696 A CN 1654696A CN 200510063018 CN200510063018 CN 200510063018 CN 200510063018 A CN200510063018 A CN 200510063018A CN 1654696 A CN1654696 A CN 1654696A
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Abstract
The present invention is one kind of austenitic stainless steel composition and features its composition of C not more than 0.12 wt%, Si not more than 1.00 wt%, Mn 5.00-7.00 wt%, P not more than 0.045 wt%, S not more than 0.030 wt%, Ni 2.00-4.00, Cr 16.00-18.00 and Cu 1.50-3.50 wt% except Fe and other impurity. The austenitic stainless steel composition has relatively low cost, high acid and alkali corrosion resistance, especially high sea water cavitation resistance, high strength, high toughness, high wear resistance, and expansion as high as 40-50 %, and is suitable for use in container, especially ocean shipping container.
Description
Affiliated technical field
The invention belongs to improvement to each material composition of austenitic stainless steel alloy composition; Be specifically related to a kind of high-manganses low-nickel austenitic stainless steel.
Background technology
Austenitic stainless steel alloy uses more extensive, but its price is higher.The cost height of austenitic stainless steel alloy mainly is that it contains due to the more expensive nickel (Ni).In order to reduce the price of austenitic stainless steel, some also occur and rationally reduced nickel composition Design in the austenitic stainless steel, a kind of " austenitic stainless steel " as the ZL200410041285.X announcement, though this stainless steel has reduced the nickel composition, indexs such as corresponding tensile strength, yield strength and elongation all weaken to some extent.The stainless steel of producing according to this design is not suitable for industrial application, as producing freight container etc., and only is applicable to such as fields such as Hardware fitting, kitchen utensils, tablewares.So need a kind of suitable industrial application, indexs such as tensile strength, yield strength and elongation are better, and nickel content reduces low-cost austenitic stainless steel relatively.
Summary of the invention
It is low to the purpose of this invention is to provide a kind of nickel content, and low price meets the austenitic stainless steel of producing industrial application such as freight container.
A kind of austenitic stainless steel composition, it consists of (weight %)
≤ 0.12C ,≤1.00Si, 5.00～7.00Mn ,≤0.045P ,≤0.030S, 2.00～4.00Ni, 16.00～18.00Cr, 1.50～3.50Cu, all the other compositions comprise Fe and minor impurity.
Austenitic stainless steel composition according to claim 1, it consists of (weight %)
0.08C, 0.35Si, 5.69Mn, 0.027P, 0.003S, 2.61Ni, 17.55Cr, 2.57Cu, all the other compositions comprise Fe and minor impurity.
Catalyzer of the present invention compared with prior art has the following advantages:
1. have stronger acid-alkali-corrosive-resisting performance, especially the cavitation erosion resistant performance in seawater has obvious superiority, meets the especially requirement of shipping container of freight container.
2. intensity height, good toughness, wearability are good.Yield strength is greater than 400Mpa, and is higher more than 20% than nickel chromium stainless steel 1Cr18Ni9Ti commonly used, and breakdown point is greater than 720Mpa, and is higher more than 17 than 1Cr18Ni9Ti.
3. this stainless unit elongation is up to 40～50%, and it can satisfy the general industry service requirements fully, is fit to freight container and uses.
4. the stainless starting material of melting the present invention source is sufficient, and cheap, cost is than 18-8 nickel chromium stainless steel low 20%.
Determine the reasons are as follows of above-mentioned main chemical compositions scope:
1 carbon: carbon is at the element of the strong formation of austenitic stainless steel Chinese style and stable austenite and expansion austenitic area, so carbon plays an important role to forming austenite structure.So carbon will have certain degree.But when carbon content is high, the plasticity when not only influencing cold working, and also also influential to the corrosion resistance nature of steel.
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 element, 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, and elements compounding such as normal and nickel add in the steel, 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 erosion resistance on the basis that reduces chromium content, guarantee to obtain austenite structure again.
5 nickel: nickel is the element of strong formation and stable austenite and expansion austenitic area.The objective of the invention is to reduce the content of nickel, but, still add 2%～4% nickel in order to improve the hot and cold processing characteristics of steel.
6 phosphorus: phosphorus is to be harmful element, should be controlled at below 0.045% (weight) as far as possible.
7 sulphur: sulphur is to be harmful element, should be controlled at below 0.03% (weight) as far as possible.
8 bronze medals: copper is as alloying element, in stainless steel of the present invention, main plaing reduces cold-working, the effect of sclerosis tendency, and then raising cold machine-shaping performance, but the hot workability that remarkable reduction steel is arranged because of copper, particularly more obvious to the lower stainless steel influence of nickel content, so the content of copper is limited in 1.5%～3.5% (weight) in the austenitic stainless steel of the present invention.
Embodiment
Embodiment
Austenitic stainless steel of the present invention can be used non-vacuum induction furnace, electric arc furnace smelting.1130～1180 ℃ of the hot-work of ingot blank (forging, hot rolling) temperature ranges, 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.
Its consist of (weight %) :≤0.12C ,≤1.00Si, 5.00～7.00Mn ,≤0.045P ,≤0.030S, 2.00～4.00Ni, 16.00～18.00Cr, 1.50～3.50Cu, all the other compositions comprise Fe and minor impurity.
Present embodiment consists of (weight %): 0.08C, 0.35Si, 5.69Mn, 0.027P, 0.003S, 2.61Ni, 17.55Cr, 2.57Cu, all the other compositions comprise Fe and minor impurity.
Claims (2)
1. austenitic stainless steel composition, it is characterized in that: it consists of (weight %)
≤ 0.12C ,≤1.00Si, 5.00～7.00Mn ,≤0.045P ,≤0.030S, 2.00～4.00Ni, 16.00～18.00 Cr, 1.50～3.50 Cu, all the other compositions comprise Fe and minor impurity.
2. austenitic stainless steel composition according to claim 1 is characterized in that: it consists of (weight %)
0.08C, 0.35Si, 5.69Mn, 0.027P, 0.003S, 2.61Ni, 17.55 Cr, 2.57Cu, all the other compositions comprise Fe and minor impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510063018 CN1654696A (en) | 2005-04-01 | 2005-04-01 | Austenitic stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510063018 CN1654696A (en) | 2005-04-01 | 2005-04-01 | Austenitic stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1654696A true CN1654696A (en) | 2005-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510063018 Pending CN1654696A (en) | 2005-04-01 | 2005-04-01 | Austenitic stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1654696A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845598A (en) * | 2009-03-23 | 2010-09-29 | 盐城中油船舶海洋工程科技有限公司 | Seawater corrosion resistant austenitic stainless steel and application thereof |
| CN107598171A (en) * | 2017-08-16 | 2018-01-19 | 北京科技大学 | A kind of desalinization conduit coupling high nitrogen biphase stainless steel near-net-shape method |
-
2005
- 2005-04-01 CN CN 200510063018 patent/CN1654696A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845598A (en) * | 2009-03-23 | 2010-09-29 | 盐城中油船舶海洋工程科技有限公司 | Seawater corrosion resistant austenitic stainless steel and application thereof |
| CN107598171A (en) * | 2017-08-16 | 2018-01-19 | 北京科技大学 | A kind of desalinization conduit coupling high nitrogen biphase stainless steel near-net-shape method |
| CN107598171B (en) * | 2017-08-16 | 2019-04-12 | 北京科技大学 | A kind of sea water desalination conduit coupling high nitrogen biphase stainless steel near-net-shape method |
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