EP2470681A1 - Stainless martensitic chromium steel - Google Patents
Stainless martensitic chromium steelInfo
- Publication number
- EP2470681A1 EP2470681A1 EP10751807A EP10751807A EP2470681A1 EP 2470681 A1 EP2470681 A1 EP 2470681A1 EP 10751807 A EP10751807 A EP 10751807A EP 10751807 A EP10751807 A EP 10751807A EP 2470681 A1 EP2470681 A1 EP 2470681A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chromium
- steel according
- steel
- tungsten
- chrome steel
- 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.)
- Granted
Links
- 229910000734 martensite Inorganic materials 0.000 title claims abstract description 20
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 20
- 239000011651 chromium Substances 0.000 claims abstract description 20
- 239000000314 lubricant Substances 0.000 claims abstract description 16
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 11
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 11
- 239000010955 niobium Substances 0.000 claims abstract description 11
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 239000010703 silicon Substances 0.000 claims abstract description 10
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010937 tungsten Substances 0.000 claims abstract description 10
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011733 molybdenum Substances 0.000 claims abstract description 9
- 239000010936 titanium Substances 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 7
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010941 cobalt Substances 0.000 claims abstract description 6
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052796 boron Inorganic materials 0.000 claims abstract description 5
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 239000010949 copper Substances 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 229910000669 Chrome steel Inorganic materials 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 239000011572 manganese Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 5
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- 239000011593 sulfur Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 39
- 239000010959 steel Substances 0.000 abstract description 39
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 9
- 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 abstract description 2
- 239000005864 Sulphur Substances 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 238000009628 steelmaking Methods 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 description 14
- 238000005299 abrasion Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- GVEHJMMRQRRJPM-UHFFFAOYSA-N chromium(2+);methanidylidynechromium Chemical compound [Cr+2].[Cr]#[C-].[Cr]#[C-] GVEHJMMRQRRJPM-UHFFFAOYSA-N 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- 229910003470 tongbaite Inorganic materials 0.000 description 7
- 150000001247 metal acetylides Chemical class 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 238000009736 wetting Methods 0.000 description 6
- -1 chromium carbides Chemical class 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005496 tempering Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000005069 Extreme pressure additive Substances 0.000 description 1
- 239000005662 Paraffin oil Substances 0.000 description 1
- DHNCFAWJNPJGHS-UHFFFAOYSA-J [C+4].[O-]C([O-])=O.[O-]C([O-])=O Chemical class [C+4].[O-]C([O-])=O.[O-]C([O-])=O DHNCFAWJNPJGHS-UHFFFAOYSA-J 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002551 biofuel Substances 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002611 lead compounds Chemical class 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
Definitions
- the invention relates to a stainless martensitic chromium steel and its use.
- Such steels are known in large numbers and, depending on their composition, are suitable for a very different range of uses
- German Patent 100 27 049 B4 describes a martensitic chromium steel with 0.4 to 0.75% carbon, up to 0.7% silicon, up to 0.2% nickel, 0.4 to 1.6% manganese, 0, 02 to 0.15% sulfur, 12 to 19% chromium, 0.5 to 1, 5%
- Molybdenum up to 1, 5% tungsten, up to 0.1% nitrogen and 0.05 to 0.3% vanadium, titanium and niobium alone or next to each other and up to 0.008% boron.
- This steel has good processability, corrosion resistance and low plastic deformability a high wear and abrasion resistance, it is therefore suitable without a galvanic coating as a material for industrial needles and in particular allows a high Nah york
- the material is unsuitable for a use whose characteristic feature is a rubbing or sliding contact metal / metal in the presence of a lubricant film.
- BESTATIGUNGSKOPIE Of valve and dispensing needles and scraper rings of compressors is very important.
- Hydrocarbon compounds but the parts can also be lubricated as in injection systems or oil scraper rings of the resource itself, such as fuel.
- the decisive factor is always the emergence of an anti-slip film.
- the practice uses a number of partly expensive, partly ecologically questionable additives such as EP additives, detergents, HD additives,
- Lead compounds and chlorinated diphenyls for influencing, in particular for stabilizing and for fixing the wear-inhibiting layer.
- Dosing or valve needles also for chemical or pharmaceutical mixtures the stability and the adhesion of the wear-reducing surface layer.
- stabilization is not possible in various systems, such as with new methanol and ethanol containing fuels.
- the invention is therefore based on the problem of a martensitic stainless
- Chromium steel which due to its chemical affinity and strong adhesion forces has better wettability and forms a stable lubricant film, which is much more difficult to disturb or displace than conventional steels of this type and consequently causes less wear
- the steel contains each individually or side by side
- the carbon is austenite-forming and therefore stabilizes the austenitic crystal lattice At the same time, however, the carbon also contributes, together with the carbide formers, to precipitates which increase the hardness and abrasion resistance of the steel To prevent coarse and cellular precipitation of chromium carbides, it is advisable to precede other carbides in the austenitic Therefore, the steel contains 0.40 to 0.80%, preferably 0.55 to 0.75% of carbon
- Silicon acts as a deoxidizer Higher levels may, however, lead to the formation of intermetallic phases. On the other hand, silicon is also a telematic agent
- the steel therefore contains 0.2 to 1.5% silicon, preferably up to 0.65% silicon
- Manganese stabilizes the austenite and advantageously shifts the formation of martensite to lower temperatures.
- the maximum manganese content is therefore 1%, but should not fall below a minimum level of 0.30%, because manganese simultaneously alters the c / a ratio of the freshly formed martensite and In the austenitic range, the precipitation behavior of the fine precipitates is favorably influenced.
- the sulfur content is limited to a maximum of 0.035%, since at higher sulfur contents disturbing sulfidic precipitates may occur
- Chromium is required to ensure the corrosion resistance of the steel in combination with its molybdenum content of 1, 25 to 1, 50%, in particular a sufficient resistance to pitting.
- the chromium content is therefore at least 16% in view of the femtizing effect of the chromium however, its content is limited to 18%
- the synergistic effect of chromium and molybdenum on pitting resistance is particularly ensured when the contents of chromium, molybdenum and tungsten satisfy the following equation
- the steel contains from 0.001 to 0.8% tungsten, preferably at least 0.001% tungsten, which, together with the iron and molybdenum, forms mixed carbides which contribute significantly to the hot strength of the steel and to the emergence of tempering in the case of tempering
- the steel contains vanadium, niobium and titanium as carbide formers with the advantage that, given their high affinity for carbon, they form precipitating nuclei for the formation of chromium carbides even at very high temperatures.
- the vanadium content therefore amounts to 0.15 to 0.20% Titanium and niobium contents of up to 0.05% in each case
- the following effective sum of the carbide formers is particularly advantageous
- K 1 (% Nb) + (% Ti) + (% V)
- the steel further contains 0.001 to 0.03% of aluminum as a deoxidizer, but not more, because higher aluminum contents act provoking
- the copper content amounts to a maximum of 0.5% and, in particular during tempering, leads to fine-grained secondary precipitates which, together with other precipitations, improve the wettability of the steel for oils or hydrocarbons
- cobalt requires the formation of ⁇ -carbides and other fine precipitates, thus improving the heat resistance of the steel. For cost reasons, however, a cobalt content of 0.5% should not be exceeded
- the cooling rate here should not exceed 50 ° C / sec (heat treatment A), in order not to carbide formation
- martensite spontaneously forms below the MS temperature from the cubic body-centered crystal lattice, with the result that the previously formed carbides are incorporated in the martensite
- the stress state of the matrix is the lower, the finer distributed the carbides are present This condition requires very much the lubricant or oil wetting of the surface of the steel
- the martensite from the austenite transformation has a tetragonal distorted cage lattice with a ratio of the crystal axes a / c above 1
- the heat treatment B consists in a Anlenfingluhen at 100 to 550 0 C, preferably at least 200 "C instead, and leads to the formation of Feinausscheidun- gene in the stabilized in the previous heat treatment A in the temperature range from 1100 to 900 0 C martensite In solution contained Atoms like the one of
- FIG. 1 shows a schematic representation of an oil drop on a steel surface
- FIG. 3 shows the track width R of a ball grinding track according to FIG. 2 as a measure of the wear resistance
- Table I below shows the analyzes of five conventional comparative steels V1 to V5 and three steels E1 to E3 which fall under the invention.
- Table II shows the cumulative values for K1 to K3 resulting from the analyzes
- Austenitizing annealing labeled A in Table III took place at 1020 ° C. or 1050 ° C., followed by rapid cooling at a cooling rate of at least 50 ° C./sec to 800 ° C. and subsequent cooling to 300 within 5 minutes 0 C and a slow cooling to room temperature-the samples were also completed according to the test series B on a
- the samples were then ground and polished, cleaned in an aqueous ultrasonic bath at 50 0 C, with hot distilled water under the action of ultrasound for another 20 min. freed of detergent residues and then dried.
- the wettability index B 10 ⁇ l of paraffin oil were then applied to each sample by means of microdosing and the oil droplets then forming were measured with respect to their width B, as shown schematically in the illustration in FIG. The results of the measurements are listed together with the respective austenitizing temperature in the following table IM.
- the abrasion or wear resistance was determined by means of a modified "Pm on disk experiment".
- the cylindrical samples were first plane-steered, then cleaned, clamped in a holder and then under Fig. 2 under a rotating steel shaft with an eccentric carbide ball under pressure and spring preload dynamically loaded During the experiment, the contact zone between the sliding hard metal ball and the sample surface was steadily lubricated by the dripping of lubricating oil.
- the factors K1 and K3 also show that the favorable test results are based on a more favorable precipitation of the carbides and other phases as well as the basic structure.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL10751807T PL2470681T3 (en) | 2009-08-24 | 2010-08-18 | Stainless steel martensitic steel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009038382A DE102009038382A1 (en) | 2009-08-24 | 2009-08-24 | Stainless martensitic chrome steel |
PCT/EP2010/005067 WO2011023326A1 (en) | 2009-08-24 | 2010-08-18 | Stainless martensitic chromium steel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2470681A1 true EP2470681A1 (en) | 2012-07-04 |
EP2470681B1 EP2470681B1 (en) | 2013-11-20 |
Family
ID=42937637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10751807.8A Active EP2470681B1 (en) | 2009-08-24 | 2010-08-18 | Stainless steel martensitic steel |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2470681B1 (en) |
DE (1) | DE102009038382A1 (en) |
ES (1) | ES2446716T3 (en) |
PL (1) | PL2470681T3 (en) |
WO (1) | WO2011023326A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018197554A1 (en) * | 2017-04-25 | 2018-11-01 | Zapp Precision Metals Gmbh | Martensitic chromium steel, steel foil, perforated and/or pierced components made of a steel foil, wire, rolling bodies of a needle bearing, and method for producing a steel foil, wire, or rolling body of a needle bearing |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011102293A1 (en) | 2011-02-24 | 2012-08-30 | Stahlwerk Ergste Westig Gmbh | Use of a chromium steel with a martensitic structure and carbide inclusions |
CN115109891B (en) * | 2022-07-14 | 2022-12-20 | 中北大学 | High-carbon high-chromium nitrogen-containing martensitic stainless steel and carbide refining method thereof |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE404029B (en) * | 1968-05-31 | 1978-09-18 | Uddeholms Ab | PROCEDURE FOR THE PREPARATION OF THE SUBSTANCE FOR HERDAT STEEL THIN EGG TOOLS |
US3990892A (en) * | 1972-03-28 | 1976-11-09 | Kabushiki Kaisha Fujikoshi | Wear resistant and heat resistant alloy steels |
AT401387B (en) * | 1994-06-29 | 1996-08-26 | Boehler Ybbstalwerke | CORROSION RESISTANT ALLOY AND METHOD FOR PRODUCING CORROSION RESISTANT CUTTERS |
DE19808276C2 (en) * | 1998-02-27 | 2003-12-24 | Stahlwerk Ergste Westig Gmbh | Steel alloy for sliding elements |
JP2000337389A (en) * | 1999-03-19 | 2000-12-05 | Nsk Ltd | Rolling bearing |
DE10027049B4 (en) | 2000-01-17 | 2004-09-16 | Stahlwerk Ergste Westig Gmbh | Use a chrome steel alloy |
DE102004051629B4 (en) * | 2004-10-23 | 2006-08-24 | Stahlwerk Ergste Westig Gmbh | Stainless martensitic chrome steel |
JP2008291307A (en) * | 2007-05-24 | 2008-12-04 | Daido Steel Co Ltd | Method for manufacturing die, method for manufacturing steel for die, and method for manufacturing die using steel for die |
DE102007025758A1 (en) * | 2007-06-01 | 2008-12-04 | Mahle International Gmbh | seal |
-
2009
- 2009-08-24 DE DE102009038382A patent/DE102009038382A1/en not_active Withdrawn
-
2010
- 2010-08-18 WO PCT/EP2010/005067 patent/WO2011023326A1/en active Application Filing
- 2010-08-18 EP EP10751807.8A patent/EP2470681B1/en active Active
- 2010-08-18 PL PL10751807T patent/PL2470681T3/en unknown
- 2010-08-18 ES ES10751807.8T patent/ES2446716T3/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2011023326A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018197554A1 (en) * | 2017-04-25 | 2018-11-01 | Zapp Precision Metals Gmbh | Martensitic chromium steel, steel foil, perforated and/or pierced components made of a steel foil, wire, rolling bodies of a needle bearing, and method for producing a steel foil, wire, or rolling body of a needle bearing |
Also Published As
Publication number | Publication date |
---|---|
DE102009038382A8 (en) | 2011-06-01 |
ES2446716T3 (en) | 2014-03-10 |
WO2011023326A1 (en) | 2011-03-03 |
PL2470681T3 (en) | 2014-05-30 |
EP2470681B1 (en) | 2013-11-20 |
DE102009038382A1 (en) | 2011-03-03 |
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