US3595643A - Razor blade of a chromium containing steel - Google Patents
Razor blade of a chromium containing steel Download PDFInfo
- Publication number
- US3595643A US3595643A US556691A US3595643DA US3595643A US 3595643 A US3595643 A US 3595643A US 556691 A US556691 A US 556691A US 3595643D A US3595643D A US 3595643DA US 3595643 A US3595643 A US 3595643A
- Authority
- US
- United States
- Prior art keywords
- steel
- molybdenum
- tungsten
- chromium
- razor blade
- 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.)
- Expired - Lifetime
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- 239000011651 chromium Substances 0.000 title abstract description 20
- 229910052804 chromium Inorganic materials 0.000 title abstract description 18
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title abstract description 16
- 229910000831 Steel Inorganic materials 0.000 title description 34
- 239000010959 steel Substances 0.000 title description 34
- 238000005260 corrosion Methods 0.000 abstract description 30
- 230000007797 corrosion Effects 0.000 abstract description 30
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 24
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 24
- 239000011733 molybdenum Substances 0.000 abstract description 24
- 229910052721 tungsten Inorganic materials 0.000 abstract description 23
- 239000010937 tungsten Substances 0.000 abstract description 22
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052799 carbon Inorganic materials 0.000 abstract description 14
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 238000005496 tempering Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 229940107218 chromium Drugs 0.000 description 14
- 235000012721 chromium Nutrition 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000011572 manganese Substances 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- 229910052726 zirconium Inorganic materials 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 239000010955 niobium Substances 0.000 description 6
- 229910052758 niobium Inorganic materials 0.000 description 6
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 229910052715 tantalum Inorganic materials 0.000 description 6
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 6
- 229910052720 vanadium Inorganic materials 0.000 description 6
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 229910052790 beryllium Inorganic materials 0.000 description 5
- 229910052796 boron Inorganic materials 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 229910052748 manganese Inorganic materials 0.000 description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000238366 Cephalopoda Species 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001130 Razor blade steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000009489 vacuum treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
- B26B21/54—Razor-blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/60—Making other particular articles cutlery wares; garden tools or the like
- B21D53/64—Making other particular articles cutlery wares; garden tools or the like knives; scissors; cutting blades
- B21D53/645—Making other particular articles cutlery wares; garden tools or the like knives; scissors; cutting blades safety razor blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
- B26B21/08—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
- B26B21/14—Safety razors with one or more blades arranged transversely to the handle
- B26B21/26—Safety razors with one or more blades arranged transversely to the handle of the continuous ribbon type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
- B26B21/54—Razor-blades
- B26B21/58—Razor-blades characterised by the material
-
- 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
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/18—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for knives, scythes, scissors, or like hand cutting tools
-
- 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
-
- 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
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
-
- 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
- C21D6/04—Hardening by cooling below 0 degrees Celsius
-
- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0273—Final recrystallisation annealing
Definitions
- a razor blade made of a chromium stainless steel having good corrosion resistance and cutting properties and also a method forming such an article is disclosed.
- the steel contains .30.45 carbon, 11-16 Cr, a member of the class consisting of tungsten and molybdenum wherein the amount of Mo may be .52.5% and W 1.05%, Si max. 70, Mn 1.5 max., 02% of Va, Ta, Ti and Zr and 0-1% Co, Ni, Cu, Al, Be and B.
- the steel may be formed by cold rolling, hardening by heating to a range of 1000- 1150 C. Subsequent tempering may be utilized.
- the present invention relates to razor blades especially in the form of thin ribbon-like razor blades, and similar thin elongated sharp edged blades having very good corrosion resistance and cutting properties and simultaneously being able to withstand stress corrosion or hydrogen induced failures when subjected to severe bending stresses.
- the ribbon-like razor blades are for instance used in a razor where a thin strip successively can be fed from one roll to another for changing the cutting edge.
- the steel is subjected to high bending stresses and a simultaneous chemical attack of a relatively long duration, which requires a high resistance to stress corrosion to avoid ruptures.
- the steel must also provide very good cutting edges after grinding.
- Previously known steels have not had the desired combination of properties.
- the steel according to the invention has a composition which in combination with a suitable heat treatment provides the desired corrosion resistance and flexibility, at the same time having hardness satisfactorily high for obtaining a sufficient sharpness and wear resistance of the cutting edge.
- the present invention provides razor blades and similar thin elongated sharp edged blades made of a stainless martensitic chromium steel having, for a razor blade steel, a very low content of carbon and containing molybdenum and/or tungsten which have been found necessary to improve the important properties, such as corrosion resistance and stress corrosion resistance.
- the razor blades according to the present invention are characterized by very good cutting properties, high corrosion resistance and toughness and high resistance to ruptures at blending stresses exceeding 71,000 psi. under simultaneous chemical attack, e.g. of the type found in locations in which razors are used and/or stored.
- the blades are consequently made of a steel having the following analysis: 0.30-0.45% carbon; 11-16% chromium; 0.5-2.5% molybdenum, or 1.05.0% tungsten, or a mixture of molybdenum and tungsten in an amount such that the sum of molybdenum and one-half of the tungsten is 0.5-2.5%; 00.70% silicon; 0-1.5% manganese and the rest iron with incidental impurities.
- carbide formers such as vanadium, niobium, tantalum, titanium and/or zirconium
- the total amount of these metals should in no event exceed 2% by weight, preferably 1%, and usually should be much less. Even smaller quantities of such elements as cobalt, nickel, copper, aluminum, beryllium, and/ or boron may 'be tolterated, the total in no event exceeding 1% by weight.
- the sum of the amounts of the carbide formers, chromium, molybdenum, vanadium, titanium and one-half of the amounts of tungsten, niobium, tantalum, and zirconium should be 12-165 preferably l316%.
- the carbon content should be chosen within the narrower range 0.350.45%. Further the chromium content should normally be held within the range 12l5 preferably 13-14%, and the silicon content should normally be at most 06%, and the manganese content at most 1.2%.
- the carbon content has been chosen sufficiently high so that the steel can attain a hardness of at least VPN 625 (test load 0.5 kg.) after hardening and subzero cooling and possibly low temperature tempering, and at the same time so low that the steel is highly resistant to stress corrosion failure.
- the content of chromium is so high that good corrosion resistance is obtained, but sufficiently low so that a satisfactory hardness can be attained after hardening.
- the content of molybdenum is usually chosen rather high to obtain good corrosion resistance, being from 0.5 to 2.0%, preferably from 0.8 to 1.5% when no tungsten is present.
- the steel for the razor blades according to the invention should permit hardening to a high hardness in order to facilitate the grinding of the cutting edge or edges. Further the steel should be corrosion resistant and not liable to ruptures under the influence of chemical attack and simultaneous bending. In order to achieve these properties the steel according to the composition defined has to be subject to a heat treatment especially adapted for the purpose.
- the steel according to the invention should be heat treated in such a way that absorption of nitrogen during the hardening is avoided, and for this purpose the procedure should preferably be performed in a suitable protective atmosphere, for instance pure hydrogen.
- a suitable protective atmosphere for instance pure hydrogen.
- the steel should be tempered at a temperature between 250 and 450 C., preferably 300-400 C.
- the heat treatment includes an initial heating to a temperature between 1000 and 1150 0, preferably l075 1100 C., followed by cooling to room temperature, usually between blocks cooled by water. This step may be followed by subzero cooling to a temperature between 20 and 120 0., usually 40 to -80 C., whereafter the steel preferably is tempered for a short time at a temperature between 100 and 450 C., in order to obtain a maximal hardness exceeding VPN 625 (load 0.5 kg.).
- the cutting edge or edges are prepared e.g. by shaping as by grinding and then preferably a coating of the edge with a material for enhancing the shaving characteristics is applied and sintered to the steel at a temperature between 250 and 450 C., e.g. at about 350 C., resulting in a final hardness of about VPN 550 (load 0.5 kg).
- the appended diagram comprises curves representing the susceptibility to said corrosion as a function of the carbon content for some different steel compositions, some of which are within and some without the scope of the invention.
- Curve .A represent steels containing 13.5% Cr
- the curves B and C show steels according to the in vention containing 13.5% Cr and 1.25% M0, the C steels having been melted in high vacuum.
- the steels in the form of thin cold-rolled strips have been heated at 1075" C. during 30 seconds and have then been cooled to room temperature and thereafter to 70 C. and have finally been tempered at 350 C. during 15 minutes.
- the diagram shows that for steels having about 13.5% chro mium and carbon contents Within the range 0.30-0.45 the sensitivity for stress corrosion is substantially lessened if molybdenum is added.
- the diagram also shows that high vacuum treatment further decreases the susceptibility to stress corrosion failures. It is thus advantageous to melt the steel in high vacuum, as this further lessens the risk for ruptures under the influence of stress corrosion conditions. However, this is not an absolute requirement.
- the variation of hardness in relation to the content of carbon is also noted.
- carbon 0.370.43%
- molybdenum l.11.4% (or twice this amount of tungsten) the sum of the amounts of molybdenum and one-half the tungsten being from 1.1-1.4%
- silicon 0.20.5%
- sulphur 50.020% nitrogen 50.06%; the balance being substantially all iron.
- alloys in percent of weight according to the invention the following may be mentioned:
- Steel 2 was treated in the same way but high vacuum remelted before rolling down to a strip with the thickness of 0.0015". With the same heat treatment as for steel No. 1 the hardness after the first tempering at 125 C. was VPN 690 and after the final tempering at 350 C. VPN 540. No fractures occurred at the stress corrosion test.
- Razor blades and similar thin elongated sharp edged blades having good cutting properties and high corrosion resistance and toughness characterized in that the blades are made from a steel consisting essentially of 0.35- 0.45% carbon; 12-15% chromium; a member of the class consisting of molybdenum, tungsten and mixtures thereof, the amount of molybdenum when present alone being 0.8-1.5%, the amount of tungsten when present alone being 1.63.0%, and the sum of the amounts of molybdenum and one-half the tungsten when both are present being 0.8-1.5% 00.6% silicon; 01.2% manganese; O1% each of a member of the class consisting of vanadium, niobium, tantalum, titanium and zirconium, the total of all the last said members being a maximum of 1%; and 01% each of a member of the class consisting of cobalt, nickel, copper, aluminum, beryllium,
- Razor blades having good cutting properties, high corrosion resistance, and toughness characterized in that the blades are made from a steel which in addition to iron with incidental impurities consists essentially of 0.37- 0.43% carbon; 1314% chromium; a member of the group consisting of molybdenum, tungsten and mixtures thereof, the amount of molybdenum when present alone being 1.1l.4%, the amount of tungsten when present alone being 2.22.8%, and the sum of the amounts of molybdenum and one-half the tungsten when both are present being 1.11.4%; 0.20.5% silicon; and 02-05% manganese.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Knives (AREA)
- Heat Treatment Of Steel (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US49708565A | 1965-10-18 | 1965-10-18 | |
US55669166A | 1966-06-10 | 1966-06-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3595643A true US3595643A (en) | 1971-07-27 |
Family
ID=27052394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US556691A Expired - Lifetime US3595643A (en) | 1965-10-18 | 1966-06-10 | Razor blade of a chromium containing steel |
Country Status (7)
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4180420A (en) * | 1977-12-01 | 1979-12-25 | The Gillette Company | Razor blades |
DE3901470C1 (en) * | 1989-01-19 | 1990-08-09 | Vereinigte Schmiedewerke Gmbh, 4630 Bochum, De | Cold-working steel and its use |
US5364588A (en) * | 1992-10-26 | 1994-11-15 | A. Finkl & Sons Co. | Double stabilized stainless-type steel die block |
US6235237B1 (en) * | 1998-02-27 | 2001-05-22 | Stahlwerk Ergste Westig Gmbh | Steel alloy for gliding elements |
WO2005093112A1 (en) * | 2004-03-26 | 2005-10-06 | Sandvik Intellectual Property Ab | Steel alloy for cutting details |
US20100308505A1 (en) * | 2009-06-05 | 2010-12-09 | Edro Specialty Steels, Inc. | Plastic injection mold of low carbon martensitic stainless steel |
JP2014070229A (ja) * | 2012-09-27 | 2014-04-21 | Hitachi Metals Ltd | 刃物用鋼帯の製造方法 |
EP3070180A4 (en) * | 2013-11-13 | 2016-11-23 | Nsk Ltd | MACHINE MANUFACTURING METHOD USING MARTENSITIC STAINLESS STEEL AND ROTATING DEVICE, ROLLER BEARINGS AND ROLLER BEARING UNIT |
US9534268B2 (en) | 2009-06-24 | 2017-01-03 | Outokumpu Nirosta Gmbh | Method for manufacturing a hot press-hardened component and use of a steel product for manufacturing a hot press-hardened component |
US10196718B2 (en) * | 2015-06-11 | 2019-02-05 | Hitachi Metals, Ltd. | Steel strip for cutlery |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2521889B1 (fr) * | 1982-02-19 | 1986-04-04 | Tarn Limes Rapes Saut | Outil de limage et son procede de fabrication |
AT392485B (de) * | 1985-05-21 | 1991-04-10 | Boehler Gmbh | Werkstoff zur herstellung von stanz- und gegenplatten |
EP0485641B1 (en) * | 1990-11-10 | 1994-07-27 | Wilkinson Sword Gesellschaft mit beschränkter Haftung | Razor blade steel having high corrosion resistance, razor blades and a process for manufacturing razor blades |
DE102004051629B4 (de) * | 2004-10-23 | 2006-08-24 | Stahlwerk Ergste Westig Gmbh | Rostfreier martensitischer Chromstahl |
DE102011102293A1 (de) * | 2011-02-24 | 2012-08-30 | Stahlwerk Ergste Westig Gmbh | Verwendung eines Chromstahls mit martensitischem Gefüge und karbidischen Einschlüssen |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR769373A (fr) * | 1933-03-20 | 1934-08-24 | Comm Aciers Soc Ind | Alliages pour la fabrication de pièces, qui doivent pouvoir résister à l'attaque de gaz décarburants |
AT159794B (de) * | 1937-04-30 | 1940-11-11 | Sandvikens Jernverks Ab | Legierter Stahl. |
-
1966
- 1966-06-10 US US556691A patent/US3595643A/en not_active Expired - Lifetime
- 1966-10-14 NL NL6614492A patent/NL6614492A/xx unknown
- 1966-10-17 GB GB46374/66A patent/GB1108377A/en not_active Expired
- 1966-10-17 DE DE19661533380 patent/DE1533380B1/de active Pending
- 1966-10-17 DE DE19661533381 patent/DE1533381B1/de active Pending
- 1966-10-17 ES ES0332349A patent/ES332349A1/es not_active Expired
- 1966-10-18 NL NL6614639A patent/NL6614639A/xx unknown
- 1966-10-18 GB GB46598/66A patent/GB1107233A/en not_active Expired
- 1966-10-18 BE BE688416D patent/BE688416A/xx unknown
- 1966-10-18 CH CH1503366A patent/CH474338A/de not_active IP Right Cessation
- 1966-10-18 BE BE688415D patent/BE688415A/xx unknown
- 1966-10-18 CH CH1503166A patent/CH474337A/de not_active IP Right Cessation
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4180420A (en) * | 1977-12-01 | 1979-12-25 | The Gillette Company | Razor blades |
DE3901470C1 (en) * | 1989-01-19 | 1990-08-09 | Vereinigte Schmiedewerke Gmbh, 4630 Bochum, De | Cold-working steel and its use |
US5364588A (en) * | 1992-10-26 | 1994-11-15 | A. Finkl & Sons Co. | Double stabilized stainless-type steel die block |
US6235237B1 (en) * | 1998-02-27 | 2001-05-22 | Stahlwerk Ergste Westig Gmbh | Steel alloy for gliding elements |
WO2005093112A1 (en) * | 2004-03-26 | 2005-10-06 | Sandvik Intellectual Property Ab | Steel alloy for cutting details |
US20070274855A1 (en) * | 2004-03-26 | 2007-11-29 | Jonas Nilsson | Steel Alloy For Cutting Details |
US20100308505A1 (en) * | 2009-06-05 | 2010-12-09 | Edro Specialty Steels, Inc. | Plastic injection mold of low carbon martensitic stainless steel |
US8557059B2 (en) | 2009-06-05 | 2013-10-15 | Edro Specialty Steels, Inc. | Plastic injection mold of low carbon martensitic stainless steel |
US9534268B2 (en) | 2009-06-24 | 2017-01-03 | Outokumpu Nirosta Gmbh | Method for manufacturing a hot press-hardened component and use of a steel product for manufacturing a hot press-hardened component |
JP2014070229A (ja) * | 2012-09-27 | 2014-04-21 | Hitachi Metals Ltd | 刃物用鋼帯の製造方法 |
EP3070180A4 (en) * | 2013-11-13 | 2016-11-23 | Nsk Ltd | MACHINE MANUFACTURING METHOD USING MARTENSITIC STAINLESS STEEL AND ROTATING DEVICE, ROLLER BEARINGS AND ROLLER BEARING UNIT |
EP3483291A1 (en) * | 2013-11-13 | 2019-05-15 | NSK Ltd. | Manufacturing method of mechanical component using martensitic stainless steel |
US10494692B2 (en) | 2013-11-13 | 2019-12-03 | Nsk Ltd. | Manufacturing method of mechanical component using martensitic stainless steel, rotating device, rolling bearing and rolling bearing unit |
US10851433B2 (en) | 2013-11-13 | 2020-12-01 | Nsk Ltd. | Manufacturing method of mechanical component using martensitic stainless steel, rotating device, rolling bearing and rolling bearing unit |
US10196718B2 (en) * | 2015-06-11 | 2019-02-05 | Hitachi Metals, Ltd. | Steel strip for cutlery |
Also Published As
Publication number | Publication date |
---|---|
NL6614639A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1967-04-19 |
CH474337A (de) | 1969-06-30 |
BE688415A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1967-03-31 |
CH474338A (de) | 1969-06-30 |
DE1533380B1 (de) | 1971-05-06 |
BE688416A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1967-03-31 |
NL6614492A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1967-04-19 |
DE1533381B1 (de) | 1970-07-09 |
GB1108377A (en) | 1968-04-03 |
ES332349A1 (es) | 1967-11-16 |
GB1107233A (en) | 1968-03-27 |
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