IT8048299A1 - FERRITIC STAINLESS STEEL. - Google Patents
FERRITIC STAINLESS STEEL. Download PDFInfo
- Publication number
- IT8048299A1 IT8048299A1 IT1980A48299A IT4829980A IT8048299A1 IT 8048299 A1 IT8048299 A1 IT 8048299A1 IT 1980A48299 A IT1980A48299 A IT 1980A48299A IT 4829980 A IT4829980 A IT 4829980A IT 8048299 A1 IT8048299 A1 IT 8048299A1
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- IT
- Italy
- Prior art keywords
- stainless steel
- ferritic stainless
- carbon
- nitrogen
- steel according
- Prior art date
Links
- 229910001220 stainless steel Inorganic materials 0.000 title claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 32
- 229910052799 carbon Inorganic materials 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims description 16
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 15
- 239000010936 titanium Substances 0.000 claims description 15
- 229910052719 titanium Inorganic materials 0.000 claims description 15
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 11
- 229910052726 zirconium Inorganic materials 0.000 claims description 11
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 8
- 239000011733 molybdenum Substances 0.000 claims description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 239000011651 chromium Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 241000272201 Columbiformes Species 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000010955 niobium Substances 0.000 claims 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 description 12
- 239000000956 alloy Substances 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 10
- 238000003466 welding Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 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 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000000126 substance Substances 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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Steel (AREA)
- Catalysts (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Compounds Of Iron (AREA)
Description
Descrizione dell 'invenzione avente per titolo: "ACCIAIO INOSSIDABILE FERRITICO" Description of the invention entitled: "FERRITIC STAINLESS STEEL"
RIASSUNTO DELL 'INVENZIONE SUMMARY OF THE INVENTION
Acciaio inossidabile ferritico caratterizzato da resisti za superiore alla corrosione di fenditura ed intergranu lare . Ferritic stainless steel characterized by superior resistance to crevice and intergranular corrosion.
L'acciaio ? costituito essenzialmente , in peso , da carbonio fino a 0.08% , azoto fino a 0.06% , cromo da 25.00 a 35.00% , molibdeno da 3.60 a 5.60% , manganese fino a 2.00% , fino a 2.00% di nickel, silicio fino a 2.00% , alluminio fino a 0.5%, fino al 2.00% di elemen ti scelti nel gruppo formato da titanio, zirconio e colombi?, bilancio essenzialmente di ferro. La somma di carbonio ed azoto supera lo 0.0275%. The steel? essentially consisting, by weight, of carbon up to 0.08%, nitrogen up to 0.06%, chromium from 25.00 to 35.00%, molybdenum from 3.60 to 5.60%, manganese up to 2.00%, nickel up to 2.00%, silicon up to 2.00 %, aluminum up to 0.5%, up to 2.00% of elements selected from the group formed by titanium, zirconium and doves ?, essentially iron balance. The sum of carbon and nitrogen exceeds 0.0275%.
Le percentuali di titanio, zirconio e colombio seguo no la seguente equazione: The percentages of titanium, zirconium and colombium follow the following equation:
DESCRIZIONE DESCRIPTION
La presente invenzione si riferisce ad un acciaio inossidabile ferritico. Due brevetti statunitensi gi? pub blicati descrivono acciai inossidabili ferritici dotati di resistenza superiore alla corrosione di fenditura ed intergranulare. Gli acciai descritti in det ti brevetti contengono 29% di cromo e 4% di molibdeno. Essi contengono anche una quantit? massima di carbonio ed azoto pari a 250 parti per milione. Il contenuto di carbonio ed azoto ? limitato perch? la resistenza degli acciai alla corrosione diminuisce all'au mentare del livello di detti elementi. The present invention refers to a ferritic stainless steel. Two US patents already? publications disclose ferritic stainless steels with superior resistance to crevice and intergranular corrosion. The steels described in these patents contain 29% chromium and 4% molybdenum. They also contain a quantity? maximum carbon and nitrogen equal to 250 parts per million. The carbon and nitrogen content? limited why? the resistance of the steels to corrosion decreases as the level of said elements increases.
Il basso contenuto di carbonio ed azoto richiesto per le leghe di detti brevetti statunitensi non ? vantaggioso poich? richiede procedimenti di fusione pi? costo si, quali la fusione per induzione da vuoto. The low carbon and nitrogen content required for the alloys of said US patents does not? advantageous since? requires more merger procedures? cost yes, such as vacuum induction melting.
La presente Invenzione fornisce una lega che ? dotata di propriet? simili a quelle illustrate nei due brevetti statunitensi sopra menzionati, ma non richiede i costosi procedimenti di fusione citati in precedenza. The present invention provides an alloy which? equipped with property? similar to those illustrated in the two aforementioned US patents, but does not require the expensive casting processes mentioned above.
La lega della presente invenzione pu?, ad esempio, essere fusa e purificata usando procedimenti di decerburizzazione argon-ossigeno (AOD). La lega della prer sente invenzione contiee fino al 2.00% di elementi scelti nel gruppo formato da titanio, zirconio e colombio in modo da seguire la seguente equazione: The alloy of the present invention can, for example, be melted and purified using argon-oxygen decerburization (AOD) processes. The alloy of the present invention contains up to 2.00% of elements selected from the group formed by titanium, zirconium and colombium in order to follow the following equation:
ed il contenuto di carbonio pi? azoto supera le 275 parti per milione. Detta lega ? caratterizzata da resi, stanza superiore alla corrosione da fenditura ed intergranulare, da buona possibilit? di saldatura e da soddisfacente tenacia sia prima che dopo la saldatura. Per i motivi elencati in precedenza, la lega della presente invenzione ? chiaramente diversa da quella dei due brevetti statunitensi gi? pubblicati di cui sopra. E1 anche diversa da altre due leghe descr?tte in altri due brevetti statunitensi gi? pubblicati. and the carbon content pi? nitrogen exceeds 275 parts per million. Said league? characterized by returns, room superior to crevice and intergranular corrosion, by good possibility? of welding and satisfactory tenacity both before and after welding. For the reasons listed above, the alloy of the present invention? clearly different from that of the two US patents already? published above. It is also different from the other two alloys described in two other U.S. patents already. published.
Entrambe dette leghe contengono una quantit? di molibde no inferiore a quella specificata per la presente invenzione. Both of these alloys contain a quantity? molybdenum no less than that specified for the present invention.
Un altro riferimento utile ? un articolo intitolato "Ferritic Stainless Steel Corrosion Resistance and Economy?. Another useful reference? an article titled "Ferritic Stainless Steel Corrosion Resistance and Economy ?.
L'articolo ? stato scritto da Remus A. Lula ed ? stato pubblicato sul numero di Luglio 1976 di Metal Progress, pagine 24-29. Detto articolo non descrive l'acciaio inossidabile ferritico della presente ?nven alone. The article ? was written by Remus A. Lula and? was published in the July 1976 issue of Metal Progress, pages 24-29. Said article does not describe the ferritic stainless steel of the present invention.
E' di conseguenza scopo della presente invenzione fornire un acciaio inossidabile ferritico. L'acciaio inossidabile della presente invenzione ? caratterizzato da resistenza superiore alla corrosione da fenditura e intergranulare, da buona possibilit? di saldatura e da tenacia soddisfacente sia prima che dopo la saldatura. Esso ? costituito essenzialmente, in peso, da carbonio fino a 0.08%, azoto fino a 0.06%, cromo da 25.00 a 35.00%, molibdeno da 3.60 a 5.60%, manganese fino a 2.00%, nickel fino a 2.00%, silicio fino a 2.00%, alluminio fino a 0.5%, fino a 2.0% di elementi scelti nel gruppo formato da titanio, zirconio e carbonio, bilancio essenzialmente di ferro. La somma di carbonio ed azoto supera lo 0.0275%. Le percen tuali di titanio, zirconio e colombio seguono la seguente equazione: It is therefore an object of the present invention to provide a ferritic stainless steel. The stainless steel of the present invention? characterized by superior resistance to crevice and intergranular corrosion, by good possibility? of welding and satisfactory tenacity both before and after welding. It ? essentially made up, by weight, of carbon up to 0.08%, nitrogen up to 0.06%, chromium from 25.00 to 35.00%, molybdenum from 3.60 to 5.60%, manganese up to 2.00%, nickel up to 2.00%, silicon up to 2.00% , aluminum up to 0.5%, up to 2.0% of elements selected from the group formed by titanium, zirconium and carbon, essentially iron balance. The sum of carbon and nitrogen exceeds 0.0275%. The percentages of titanium, zirconium and colombium follow the following equation:
Carbonio ed azoto sono normalmente presenti in quanti t? rispettive pari ad almeno 0.005% e 0.010%, la somma delle percentuali dei due essendo superiore a 0.0300%. Cromo e molibdeno sono d? preferenza presenti in quan tit? da 28.50 a 30.50% e da 3.75 a 4.75%, rispettivamente. Manganese, nickel e silicio sono di solito pre senti ciascuno in quantit? inferiore a 1.00%. L'alluminio che pu? essere presente per il suo potere disossidante ? generalmente presente in quantit? inferiore a 0.1%. Titanio, colombio e/o zirconio vengono aggiunti per migliorare la resistenza della lega alla corrosio ne da fenditura ed intergranulare, il che rende detta lega una versione ad alto tenore di carbonio pi? azo to dei primi due brevetti statunitensi gi? noti qui precedentemente citati. Si ? scoperto che stabilizzan ti possono essere aggiunti a versioni ad alto tenore di carbonio pi? azoto dei due brevetti statunitensi di cui sopra, senza compromettere la tenacia e/o possibilit? di saldatura della lega. Carbon and nitrogen are normally present in how many t? respective equal to at least 0.005% and 0.010%, the sum of the percentages of the two being greater than 0.0300%. Chromium and molybdenum are d? preference present in quan tit? from 28.50 to 30.50% and from 3.75 to 4.75%, respectively. Manganese, nickel and silicon are usually present each in quantity. less than 1.00%. The aluminum that can? be present for its deoxidizing power? generally present in quantity? less than 0.1%. Titanium, colombium and / or zirconium are added to improve the resistance of the alloy to crack and intergranular corrosion, which makes said alloy a higher carbon content version. azo to the first two US patents already? notes herein previously cited. Yup ? found that stabilizers can be added to high-carbon versions pi? nitrogen of the two US patents above, without compromising the tenacity and / or possibility? soldering of the alloy.
Quantunque sia preferibile, aggiungere almeno lo 0.15% di titanio, poich? la presenza di solo colombio pu? influenzare la possibilit? di saldatura della lega, rien tra negli scopi della presente invenzione aggiungere la quantit? richiesta di stabilizzante come titanio oppure colombio. Although it is preferable, add at least 0.15% titanium, since? the presence of only colombio can? affect the possibility? of soldering of the alloy, it falls within the scope of the present invention to add the quantity? request for stabilizer such as titanium or colombium.
Il colombio influenza positivamente rispetto al tita nio la tenacia della lega. Una realizzazione particolare dell'invenzione implica almeno 0.15% di colombio ed almeno 0.15% di titanio. Titanio, colombio e zirconio sono preferibilmente presenti in quantit? fino a 1.00% secondo la seguente equazione: Columbian has a positive influence on the tenacity of the alloy compared to titanium. A particular embodiment of the invention involves at least 0.15% colombium and at least 0.15% titanium. Titanium, colombium and zirconium are preferably present in quantities? up to 1.00% according to the following equation:
L'acciaio inossidabile ferritico della presente inven zione ? particolarmente adatto per l'uso come articolo saldato di spessore non superiore a 0.178 cm (in genere non superiore a 0.124 cm) e, in particolare, come tubatura di refrigerante saldata, il cui spessore varia in genere tra 0.066 e 0.094 cm. The ferritic stainless steel of the present invention? particularly suitable for use as a welded article with a thickness not exceeding 0.178 cm (typically not exceeding 0.124 cm) and, in particular, as a welded refrigerant piping, the thickness of which typically varies between 0.066 and 0.094 cm.
Gli esempi che seguono illustrano diversi aspetti del 1 invenzione. Lingotti derivati da quindici fusi (Fusi da A a 0) sono stati riscaldati a 1121.1?C, laminati a freddo fino ad un nastro di spessore da 0.157 a 0.165 cm e temprati a temperature pari a 1065.5 o 1121.1?C. The following examples illustrate various aspects of the invention. Ingots derived from fifteen spindles (Spindles A to 0) were heated to 1121.1? C, cold rolled to a 0.157 to 0.165 cm thick strip and quenched at temperatures of 1065.5 or 1121.1? C.
Dei campioni di detti lingotti sono stati successiva mente valutati per la resistenza alla corrosione da fenditura. Samples of said ingots were subsequently evaluated for crack corrosion resistance.
Altri campioni sono stati saldati a TIG e valutati per la resistenza alla corrosione da fenditura ed intergranulare. Other specimens were TIG welded and evaluated for crack and intergranular corrosion resistance.
La composizione chimica dei fusi ? riportata nella Tabella I seguente. The chemical composition of the spindles? shown in Table I below.
TABELLA I TABLE I
Dati ulteriori relativi a detta valutazione sono ripor tati di seguito in Tabella II. Additional data relating to this assessment are reported below in Table II.
TABELLA II TABLE II
E' da notare ohe i fusi A e B non rientrano nella pre sente invenzione. Essi non seguono la seguente equazione: It should be noted that spindles A and B do not fall within the scope of the present invention. They do not follow the following equation:
La resistenza alla corrosione di fenditura ? stata valutata immergendo campioni di area superficiale 2.54 cm per 5.08 cm in una soluzione di cloruro ferrico al 10% per 72 ore. Corrosion resistance of crevice? was evaluated by immersing 2.54 cm by 5.08 cm surface area samples in 10% ferric chloride solution for 72 hours.
La prova ? stata eseguita a temperature di 35 e 50? C. Le fenditure venivano prodotte sui bordi e sulle super fici usando blocchi di politetrafluoroetilene sulla parte anteriore e sulla parte posteriore? mantenuti in posizione da coppie di strisce di gomma tese a 90? l'una rispetto all'altra in direzione sia longitudinale che trasversale. La prova ? descritta nella se? zione: G 48=76 di American Society For Testing and Materials. I risultati della valutazione sono riportati nella Tabella III che segue. Proof ? was performed at temperatures of 35 and 50? C. Were the slits produced on the edges and surfaces using polytetrafluoroethylene blocks on the front and back? held in place by pairs of rubber strips stretched at 90? relative to each other in both longitudinal and transverse directions. Proof ? described in the if? tion: G 48 = 76 from American Society For Testing and Materials. The results of the evaluation are shown in Table III below.
Claims (8)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10937380A | 1980-01-03 | 1980-01-03 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| IT8048299A0 IT8048299A0 (en) | 1980-03-31 |
| IT8048299A1 true IT8048299A1 (en) | 1981-10-01 |
| IT1188919B IT1188919B (en) | 1988-01-28 |
Family
ID=22327323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT48299/80A IT1188919B (en) | 1980-01-03 | 1980-03-31 | FERRITIC STAINLESS STEEL |
Country Status (19)
| Country | Link |
|---|---|
| JP (1) | JPS5698459A (en) |
| KR (1) | KR850000995B1 (en) |
| AT (1) | AT376706B (en) |
| AU (1) | AU535724B2 (en) |
| BE (1) | BE882792A (en) |
| BR (1) | BR8001876A (en) |
| CA (1) | CA1163471A (en) |
| CS (1) | CS216220B2 (en) |
| DE (1) | DE3012957A1 (en) |
| ES (1) | ES8105040A1 (en) |
| FR (1) | FR2473069A1 (en) |
| GB (1) | GB2066848B (en) |
| IT (1) | IT1188919B (en) |
| MX (1) | MX6668E (en) |
| NL (1) | NL8001739A (en) |
| NO (1) | NO154585C (en) |
| PL (1) | PL124421B1 (en) |
| SE (1) | SE436577B (en) |
| SU (1) | SU1258328A3 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6331535A (en) * | 1986-07-23 | 1988-02-10 | Jgc Corp | Apparatus for treating carbon-containing compound having carbon precipitation suppressing property |
| US10883160B2 (en) | 2018-02-23 | 2021-01-05 | Ut-Battelle, Llc | Corrosion and creep resistant high Cr FeCrAl alloys |
| CN114867879B (en) * | 2020-04-15 | 2023-07-07 | 日铁不锈钢株式会社 | Ferritic stainless steel material and method for producing same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA922543A (en) * | 1969-07-11 | 1973-03-13 | The International Nickel Company Of Canada | Corrosion resistant ferritic stainless steel |
| GB1359629A (en) * | 1971-10-26 | 1974-07-10 | Deutsche Edelstahlwerke Gmbh | Corrosion-resistant ferritic chrome steel |
| US3890143A (en) * | 1972-04-14 | 1975-06-17 | Nyby Bruk Ab | Welded constructions of stainless steels |
| AT338854B (en) * | 1972-09-04 | 1977-09-26 | Ver Edelstahlwerke Ag | FERRITIC OR FERRITIC-AUSTENITIC STEEL ALLOYS FOR OBJECTS THAT ARE CORROSION-RESISTANT TO ACID AND WATER MIXTURES UP TO 70 DEGREES C. |
| JPS5241113A (en) * | 1975-09-30 | 1977-03-30 | Nippon Steel Corp | Ferritic stainless steel having high toughness and high corrosion resi stance |
| GB1565419A (en) * | 1976-04-27 | 1980-04-23 | Crucible Inc | Stainless steel welded articles |
| DE2701329C2 (en) * | 1977-01-14 | 1983-03-24 | Thyssen Edelstahlwerke AG, 4000 Düsseldorf | Corrosion-resistant ferritic chrome-molybdenum-nickel steel |
-
1980
- 1980-03-11 SE SE8001869A patent/SE436577B/en not_active IP Right Cessation
- 1980-03-12 NO NO800713A patent/NO154585C/en unknown
- 1980-03-13 AU AU56418/80A patent/AU535724B2/en not_active Ceased
- 1980-03-25 NL NL8001739A patent/NL8001739A/en not_active Application Discontinuation
- 1980-03-28 BR BR8001876A patent/BR8001876A/en not_active IP Right Cessation
- 1980-03-31 IT IT48299/80A patent/IT1188919B/en active
- 1980-04-01 CA CA000348952A patent/CA1163471A/en not_active Expired
- 1980-04-02 DE DE19803012957 patent/DE3012957A1/en not_active Ceased
- 1980-04-02 GB GB8011020A patent/GB2066848B/en not_active Expired
- 1980-04-07 KR KR1019800001438A patent/KR850000995B1/en active
- 1980-04-15 BE BE0/200229A patent/BE882792A/en not_active IP Right Cessation
- 1980-04-18 FR FR8008817A patent/FR2473069A1/en active Granted
- 1980-05-02 JP JP5935980A patent/JPS5698459A/en active Granted
- 1980-05-06 SU SU2917251A patent/SU1258328A3/en active
- 1980-05-13 AT AT0255980A patent/AT376706B/en not_active IP Right Cessation
- 1980-05-26 MX MX808842U patent/MX6668E/en unknown
- 1980-06-12 ES ES492375A patent/ES8105040A1/en not_active Expired
- 1980-07-30 CS CS805325A patent/CS216220B2/en unknown
- 1980-09-11 PL PL1980226698A patent/PL124421B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE8001869L (en) | 1981-07-04 |
| BR8001876A (en) | 1981-07-14 |
| AT376706B (en) | 1984-12-27 |
| JPS5698459A (en) | 1981-08-07 |
| AU535724B2 (en) | 1984-04-05 |
| CA1163471A (en) | 1984-03-13 |
| FR2473069A1 (en) | 1981-07-10 |
| FR2473069B1 (en) | 1984-12-07 |
| NO154585C (en) | 1986-11-05 |
| JPH0321625B2 (en) | 1991-03-25 |
| GB2066848A (en) | 1981-07-15 |
| BE882792A (en) | 1980-10-15 |
| NO800713L (en) | 1981-07-06 |
| NL8001739A (en) | 1981-08-03 |
| IT8048299A0 (en) | 1980-03-31 |
| GB2066848B (en) | 1983-06-02 |
| IT1188919B (en) | 1988-01-28 |
| KR830002901A (en) | 1983-05-31 |
| ES492375A0 (en) | 1981-05-16 |
| PL124421B1 (en) | 1983-01-31 |
| DE3012957A1 (en) | 1981-09-03 |
| SE436577B (en) | 1985-01-07 |
| CS216220B2 (en) | 1982-10-29 |
| ATA255980A (en) | 1984-05-15 |
| MX6668E (en) | 1985-10-07 |
| PL226698A1 (en) | 1981-08-07 |
| KR850000995B1 (en) | 1985-07-15 |
| ES8105040A1 (en) | 1981-05-16 |
| SU1258328A3 (en) | 1986-09-15 |
| NO154585B (en) | 1986-07-28 |
| AU5641880A (en) | 1981-07-09 |
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