EP1055011A1 - Austenitic stainless steel including columbium - Google Patents
Austenitic stainless steel including columbiumInfo
- Publication number
- EP1055011A1 EP1055011A1 EP98965499A EP98965499A EP1055011A1 EP 1055011 A1 EP1055011 A1 EP 1055011A1 EP 98965499 A EP98965499 A EP 98965499A EP 98965499 A EP98965499 A EP 98965499A EP 1055011 A1 EP1055011 A1 EP 1055011A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stainless steel
- columbium
- austenitic stainless
- weight percent
- max
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 229910000963 austenitic stainless steel Inorganic materials 0.000 title claims abstract description 27
- 239000010955 niobium Substances 0.000 title claims description 97
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 title claims description 27
- 238000000034 method Methods 0.000 claims abstract description 24
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 11
- 239000010935 stainless steel Substances 0.000 claims abstract description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 43
- 239000000956 alloy Substances 0.000 claims description 43
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 42
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 26
- 229910052757 nitrogen Inorganic materials 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 229910052799 carbon Inorganic materials 0.000 claims description 16
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 14
- 229910052804 chromium Inorganic materials 0.000 claims description 14
- 239000011651 chromium Substances 0.000 claims description 14
- 229910052759 nickel Inorganic materials 0.000 claims description 13
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 230000006872 improvement Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000005098 hot rolling Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 238000000137 annealing Methods 0.000 claims 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 claims 1
- 239000011593 sulfur Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 28
- 238000012360 testing method Methods 0.000 description 25
- 238000007792 addition Methods 0.000 description 16
- 230000006870 function Effects 0.000 description 12
- 229910000859 α-Fe Inorganic materials 0.000 description 12
- 230000007423 decrease Effects 0.000 description 7
- 230000003247 decreasing effect Effects 0.000 description 6
- 229910001566 austenite Inorganic materials 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 230000000593 degrading effect Effects 0.000 description 2
- 238000009863 impact test Methods 0.000 description 2
- 238000013101 initial test Methods 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- 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
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
Definitions
- This invention relates generally to stainless steel alloys and more particularly to the
- the T201LN alloy was specifically designed for such applications and is unique in that it is designated as an acceptable material for applications in which high
- the compositionally-balanced T201LN alloy consists essentially of, in weight percent, 0.03% carbon max., 6.4 to 7.5% manganese, up to 1.0% silicon, 16 to 17.5% chromium, 4.0 to 5.0%
- the present invention relates to methods for reliably producing high strength 201
- T201LN alloy Laboratory heats of T201LN alloy, which were significantly alloyed with nitrogen ( ⁇ 0.15%) to stabilize the austenite, were made with varying amounts of
- elongation is decreased from about 55% to 48%.
- measured hardness is increased from about
- Cb content is increased from about 0.003% to about 0.210%).
- an object of the present invention is to reliably increase the strength of the T201LN alloy so that it may exceed the mechanical requirements of material specified for
- the present invention is directed to an austenitic stainless
- invention also is directed to a method for providing a high strength 201 series stainless steel wherein the method includes preparing a heat of a 201 series stainless steel and maintaining
- FIG. 1 shows ferrite maps made on V.” thick slices, taken from the bottom of the
- FIG. 2 is a schematic illustration of the tensile and subsize Charpy specimens which
- FIG. 3 is a plot of the yield strength (0.2%) offset), obtained from tensile specimens of the laboratory melted material of T201LN alloy, as a function of Cb;
- FIG. 4 is a plot of the ultimate strength, obtained from tensile specimens of the
- FIG. 5 is a plot of the ferrite content, as measured with the Magne-Gage, of the as-
- FIG. 6 is a plot of the magnetic response as measured with the Magne-Gage on the
- FIG. 7 is a plot of the % elongation, obtained from tensile specimens of the laboratory melted material of T201 LN alloy, as a function of Cb;
- FIG. 8 is a plot of the hardness, obtained from tensile specimens of the laboratory
- FIG. 9 is a plot of the grain size as a function of Cb obtained by metallographic
- FIG. 10 is a plot of the impact energies as a function of Cb content for the testing of
- FIG. 11 is a plot of the percent shear as a function of Cb content for the testing of
- FIG. 12 is a plot of the lateral expansion as a function of Cb content for the testing of subsize Charpy samples ( ⁇ 0.180" thick) at -320, -50 and 70°F. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
- the initial testing involved providing eleven groups of plates from the four heats as
- the pressure vessel code requires a minimum of 15 mils lateral expansion after welding.
- Heat 2C153, yield strength was 46,600 psi).
- the fourth heat (Heat 2C078) as shown has acceptable strength, which appears to result from the .05% Cb addition, as is discussed later. Finer grain size also results from the
- Heat 2C078 shows considerably higher yield and tensile strength than the other heats
- composition for higher tensile strength would be of value.
- Cb is sufficient to enhance the strength mechanical properties of this alloy without significantly degrading any of the other mechanical properties.
- Table 1 contains the chemistries of the three
- grain size of each sample was estimated per ASTM E 112 using the comparison procedure with the following two exceptions. The first is that the photomicrographs were taken at a
- Table 2 contains the results which were obtained on or from the testing of the tensile
- Table 3 contains the results obtained from testing of the Charpy specimens.
- this material had the highest ferrite level (-2.5%) as measured on the tensile blanks, before testing.
- Figure 5 is a plot of the ferrite content measured on the tensile blanks before testing.
- the magnetic response (FN) was also measured along the shaft of the tensile
- Cb is a strong stabilizer (i.e., retards the formation chromium
- Rb and grain size is decreased from ASTM 6.5 to ASTM 10 as Cb content is increased from 0.003% to 0.210%.
- the impact energy is increased as Cb content is increased up to about .10%) at the three temperatures tested.
- Ductility remains relatively high at -50 and 70°F. At above about .10% Cb. a decrease, but
Landscapes
- 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)
- Heat Treatment Of Steel (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US6854197P | 1997-12-23 | 1997-12-23 | |
| US68541P | 1997-12-23 | ||
| PCT/US1998/027602 WO1999032682A1 (en) | 1997-12-23 | 1998-12-23 | Austenitic stainless steel including columbium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1055011A1 true EP1055011A1 (en) | 2000-11-29 |
Family
ID=22083224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98965499A Ceased EP1055011A1 (en) | 1997-12-23 | 1998-12-23 | Austenitic stainless steel including columbium |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1055011A1 (zh) |
| JP (1) | JP2001527156A (zh) |
| KR (1) | KR100618715B1 (zh) |
| CN (1) | CN1110577C (zh) |
| AU (1) | AU2095499A (zh) |
| BR (1) | BR9814425A (zh) |
| CA (1) | CA2316332C (zh) |
| HK (1) | HK1032078A1 (zh) |
| WO (1) | WO1999032682A1 (zh) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1091006B1 (en) * | 1999-10-04 | 2004-12-08 | Hitachi Metals, Ltd. | Process of producing steel strip or sheet comprising strain-induced martensite |
| MX2010005670A (es) * | 2007-11-29 | 2010-06-02 | Ati Properties Inc | Acero inoxidable austenitico pobre. |
| ES2644452T3 (es) | 2007-12-20 | 2017-11-29 | Ati Properties, Inc. | Acero inoxidable austenítico magro resistente a la corrosión |
| US8337749B2 (en) * | 2007-12-20 | 2012-12-25 | Ati Properties, Inc. | Lean austenitic stainless steel |
| JP5383700B2 (ja) * | 2007-12-20 | 2014-01-08 | エイティーアイ・プロパティーズ・インコーポレーテッド | 安定化元素を含有するニッケルの少ないオーステナイト系のステンレス鋼 |
| ITRM20120647A1 (it) * | 2012-12-19 | 2014-06-20 | Ct Sviluppo Materiali Spa | ACCIAIO INOSSIDABILE AUSTENITICO AD ELEVATA PLASTICITÀ INDOTTA DA GEMINAZIONE, PROCEDIMENTO PER LA SUA PRODUZIONE, E SUO USO NELLÂeuro¿INDUSTRIA MECCANICA. |
| JP7462439B2 (ja) | 2020-03-12 | 2024-04-05 | 日鉄ステンレス株式会社 | オーステナイト系ステンレス鋼およびｎの上限値の算出方法 |
| IT202200018135A1 (it) * | 2022-09-05 | 2024-03-05 | Gas And Heat S P A | Acciaio per il trasporto e lo stoccaggio di ammoniaca liquida |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5763666A (en) * | 1981-08-12 | 1982-04-17 | Nisshin Steel Co Ltd | Warm water container with high yield strength and corrosion resistance |
| US4568387A (en) * | 1984-07-03 | 1986-02-04 | Allegheny Ludlum Steel Corporation | Austenitic stainless steel for low temperature service |
| JPH0629459B2 (ja) * | 1986-11-22 | 1994-04-20 | 株式会社神戸製鋼所 | Ｎｂ▲下３▼Ｓｎ生成熱処理後の極低温特性に優れたオ−ステナイト系ステンレス鋼の製造方法 |
| JP2618151B2 (ja) * | 1992-04-16 | 1997-06-11 | 新日本製鐵株式会社 | 高強度・非磁性ステンレス鋼線材 |
| FR2691982B1 (fr) * | 1992-06-04 | 1994-08-26 | Aubert Duval | Composition d'acier inoxydable pour pièces utilisées en ultravide et à basse température. |
| JP3242522B2 (ja) * | 1994-02-22 | 2001-12-25 | 新日本製鐵株式会社 | 高冷間加工性・非磁性ステンレス鋼 |
| JPH07314178A (ja) * | 1994-05-27 | 1995-12-05 | Nippon Steel Corp | オーステナイト系ステンレス鋼用ガスシールド溶接ワイヤ |
-
1998
- 1998-12-23 EP EP98965499A patent/EP1055011A1/en not_active Ceased
- 1998-12-23 BR BR9814425-1A patent/BR9814425A/pt not_active IP Right Cessation
- 1998-12-23 KR KR1020007007028A patent/KR100618715B1/ko not_active IP Right Cessation
- 1998-12-23 AU AU20954/99A patent/AU2095499A/en not_active Abandoned
- 1998-12-23 CA CA2316332A patent/CA2316332C/en not_active Expired - Fee Related
- 1998-12-23 CN CN98813587A patent/CN1110577C/zh not_active Expired - Fee Related
- 1998-12-23 WO PCT/US1998/027602 patent/WO1999032682A1/en active IP Right Grant
- 1998-12-23 JP JP2000525595A patent/JP2001527156A/ja active Pending
-
2001
- 2001-04-10 HK HK01102506A patent/HK1032078A1/xx not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9932682A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1285005A (zh) | 2001-02-21 |
| JP2001527156A (ja) | 2001-12-25 |
| WO1999032682A1 (en) | 1999-07-01 |
| HK1032078A1 (en) | 2001-07-06 |
| AU2095499A (en) | 1999-07-12 |
| KR20010033526A (ko) | 2001-04-25 |
| BR9814425A (pt) | 2002-07-23 |
| CA2316332C (en) | 2013-02-19 |
| CN1110577C (zh) | 2003-06-04 |
| KR100618715B1 (ko) | 2006-08-31 |
| CA2316332A1 (en) | 1999-07-01 |
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Legal Events
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| 17P | Request for examination filed |
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| 17Q | First examination report despatched |
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