US20120315181A1 - Stainless mold steel with lower delta ferrite content - Google Patents
Stainless mold steel with lower delta ferrite content Download PDFInfo
- Publication number
- US20120315181A1 US20120315181A1 US13/510,236 US201013510236A US2012315181A1 US 20120315181 A1 US20120315181 A1 US 20120315181A1 US 201013510236 A US201013510236 A US 201013510236A US 2012315181 A1 US2012315181 A1 US 2012315181A1
- Authority
- US
- United States
- Prior art keywords
- delta
- mold steel
- ferrite content
- stainless mold
- content
- 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.)
- Abandoned
Links
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 title claims description 26
- 239000010959 steel Substances 0.000 title claims description 26
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 33
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 239000011651 chromium Substances 0.000 claims abstract description 16
- 239000011572 manganese Substances 0.000 claims abstract description 16
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011575 calcium Substances 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 11
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 10
- 239000011593 sulfur Substances 0.000 claims abstract description 10
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 10
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011733 molybdenum Substances 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 238000005275 alloying Methods 0.000 claims abstract description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 6
- 239000010937 tungsten Substances 0.000 claims abstract description 6
- 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
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract 4
- 238000005260 corrosion Methods 0.000 claims description 14
- 230000007797 corrosion Effects 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 4
- 239000010936 titanium Chemical group 0.000 claims 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- 239000011344 liquid material Substances 0.000 claims 1
- 229910052758 niobium Inorganic materials 0.000 claims 1
- 239000010955 niobium Substances 0.000 claims 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical group [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims 1
- 239000011343 solid material Substances 0.000 claims 1
- 229910052719 titanium Chemical group 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 description 53
- 239000000956 alloy Substances 0.000 description 53
- 230000000694 effects Effects 0.000 description 15
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000004088 simulation Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 229910000734 martensite Inorganic materials 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 238000003754 machining Methods 0.000 description 5
- 238000010791 quenching Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000005242 forging Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 229910000984 420 stainless steel Inorganic materials 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- CADICXFYUNYKGD-UHFFFAOYSA-N sulfanylidenemanganese Chemical compound [Mn]=S CADICXFYUNYKGD-UHFFFAOYSA-N 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000011020 pilot scale process Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 230000031070 response to heat Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001339 C alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005088 metallography Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
Images
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
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
-
- 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
- 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
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
-
- 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- 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
- 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
- C22C38/58—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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
Definitions
- This invention is a stainless steel for general applications in plastic-forming molds, particularly, but not limited, to hot chambers molds. Its main feature is the combination of properties related to the mold fabrication, such as machinability, weldability and low cost (associated with low nickel (Ni) content) and for being easy to process, in terms of control of an undesirable microstructural phase called delta-ferrite. Due to these mold- and steel-making advantages, this invention allows a considerable reduction of the mold cost.
- the tools and molds are usually operated to form other materials, either thermoplastic polymer materials (commonly known as plastic materials) or metallic materials. Depending on the properties of the material used to make the tools, these are used in processes at room or high temperatures, around 700° C.
- the steel of this invention is especially applied to molds or mold devices, which are exposed to room temperature or temperatures below 500° C. and must be corrosion-resistant.
- a typical example of such applications is the hot chambers used in plastic-forming molds, which do not exceed 300° C. For such cases, the combined temperature/water-cooling effect may lead to corrosion, which explains the need for stainless steels. And, due to the high content of machined material, the machinability property should be optimized.
- the need for a stainless steel with high machinability, low-nickel and carbon content and increased processing capacity is evident.
- the forming temperatures of the material should be significantly higher than those of state-of-the-art steels.
- the steel of this invention will fulfill all those needs.
- the alloys of this invention have a composition of alloying elements, which, in percentage by mass, consist of:
- C carbon is the main responsible for the response to the heat treatment, and also for the hardness of martensite produced by quenching. Due to the intense heating and quick cooling, the welding process can be considered similar to quenching. Thus, the carbon content controls the final hardness created in the welded zone of the steel of this invention. Therefore, to achieve the required hardness, the carbon content should be at least 0.01%, preferably above 0.03%. However, the carbon content should be below 0.2%, preferably below 0.1%, such that hardness in the welded zones is below 40 HRC to prevent cracking and facilitate the machining process.
- Mn is not a costlier element, but is a powerful austenitizer, it should be employed at high levels in the steel of this invention. Therefore, its content should be above 2.0%, preferably above 22%, typically 2.5%. However, when employed in excess, manganese increases the content of retained austenite, as well as the coefficient of material hardening, decreasing the machinability, besides increasing hydrogen solubility and promoting flake formation; thus, the manganese content should not exceed 4.0%, preferably below 3.0%.
- Molybdenum and Tungsten when combined, the total content should be below 1.0% because they increase the cost of the alloy and the ferrite content. Preferably, the sum should be below 0.5%, typically below 0.2%.
- Copper it is an austenitizer and also promotes precipitation hardening required for the response to heat treatment. However, if employed in excess, copper may have a negative effect on the cost and is a major scrap contaminant. Thus, the copper content should lie between 0.01% and 1.5%, preferably between 0.1% and 0.8%, and typically, 0.55%.
- Vanadium plays an important role in secondary hardening that, despite not being intense in the steel of this invention, is essential for reaching the post-tempering hardness required at high temperature.
- vanadium is also a ferritizer and has a negative impact on the cost of the alloy, its content should be controlled.
- the vanadium content should lie between 0.01% and 1.0%, preferably between 0.05% and 0.50%, typically around 0.1%.
- sulfur in the steel of this invention, sulfur forms manganese sulfide (MnS) inclusions that become elongated through the hot forming process.
- MnS manganese sulfide
- the sulfur content must be higher than 0.01%, preferably above 0.05%, typically above 0.09%.
- the MnS inclusions have a negative effect on the mechanical properties, especially toughness and corrosion resistance.
- the sulfur content should be limited to 0.20%, preferably below 0.15%.
- the Al content should not be excessively high to hinder machinability. It should be below 0.5%, typically below 0.1%, preferably below 0.05%.
- Si silicon is used as a deoxidizer, an important agent in situations of low Al content, which is the case of the steel of this invention.
- this element is a ferritizer and if used in excess, favors the formation of delta-ferrite.
- the silicon content should remain between 0.1% and 1.0%, preferably between 0.2% and 0.7%, typically 0.40%.
- FIG. 1 shows the increase of the amount of delta-ferrite for state-of-the-art alloy 1 and alloys PI 1 and PI 2 of this invention. Representative microstructures have also been added.
- FIG. 2 shows the tempering curves obtained for the three alloys, alloy 1, PI 1 and PI 2—the alloys' hardness is low after quenching, changing from 30 to 34 HCR after tempering.
- FIG. 3 shows a comparison of the microstructure of alloys PI 1 and PI 2 for two contents of sulfur—note that the increase of the number of inclusions is directly proportional to the increase of the sulfur content.
- the “Thermo-calc” software was used to simulate the effect of N and Mn on the increase of the delta-ferrite formation temperature to allow defining the composition of the steel of this invention.
- Simulations 1 to 4 show the strong effect of nitrogen, at a composition equivalent to that of U.S. Pat. No. 6,358,334.
- extremely high N content above 0.06%, already anticipate the formation of gas during the solidification stage, which generates voids in the billets, making their use unfeasible.
- the Mn effect associated with a higher and safe N content can be analyzed.
- alloy 1 The alloys of the present invention will be called PI 1 and PI 2.
- the chemical compositions of the billets are shown in table 4.
- the principal variables in terms of matrix stability concerning ferrite formation are the Mn and N contents; however the S content of the alloys also varied, and the respective effects will be discussed further on.
- the S content of alloys PI 1 and PI 2 is not the same, and this can be positive or negative for the application, and thus, the S content should be specified depending on the application.
- This issue was investigated for the billets shown in Table 4, but after hot formation for 70 ⁇ 70 mm square section size (4 ⁇ reduction by area). The low values are due to the low degree of reduction applied to the trial billets.
- the higher S content of alloy PI 2 results in improved machinability but lower toughness and corrosion resistance.
- the results of such changes can be seen in Table 5 and, in microstructural terms, the different distribution of the S content of alloys PI 1 and PI 2 can be observed in FIG. 3 .
- the higher amount of sulfides (dark gray in FIG. 3 ) and their persistence explain the lower values obtained for corrosion resistance and toughness, respectively.
- the preponderant factor is the higher sulfide content of alloy PI 2.
- the two aforementioned examples show that the steel of the present invention, especially PI 3, is capable of meeting the weldability, machinability, corrosion resistance and toughness requirements without creating processing problems, for allowing higher hot forming temperatures.
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)
- Moulds For Moulding Plastics Or The Like (AREA)
- Continuous Casting (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0904608-9A2A BRPI0904608A2 (pt) | 2009-11-17 | 2009-11-17 | aÇo inoxidÁvel para moldes com menor quantidade de ferrita delta |
| BRPI0904608.9 | 2009-11-17 | ||
| PCT/BR2010/000376 WO2011060517A1 (pt) | 2009-11-17 | 2010-11-10 | Aço inoxidável para moldes com menor quantidade de ferrita delta |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20120315181A1 true US20120315181A1 (en) | 2012-12-13 |
Family
ID=44059135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US13/510,236 Abandoned US20120315181A1 (en) | 2009-11-17 | 2010-11-10 | Stainless mold steel with lower delta ferrite content |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20120315181A1 (es) |
| EP (1) | EP2503015A4 (es) |
| JP (1) | JP2013510952A (es) |
| KR (1) | KR20120092674A (es) |
| CN (1) | CN102859021A (es) |
| BR (1) | BRPI0904608A2 (es) |
| CA (1) | CA2781052A1 (es) |
| MX (1) | MX2012005738A (es) |
| RU (1) | RU2012125037A (es) |
| WO (1) | WO2011060517A1 (es) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014105795A1 (en) * | 2012-12-28 | 2014-07-03 | Hackett Micah J | Iron-based composition for fuel element |
| CN104250673A (zh) * | 2013-06-25 | 2014-12-31 | 江苏万恒铸业有限公司 | 一种降低核级不锈钢铸件铁素体含量的熔炼工艺 |
| US10157687B2 (en) | 2012-12-28 | 2018-12-18 | Terrapower, Llc | Iron-based composition for fuel element |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101463315B1 (ko) | 2012-12-21 | 2014-11-18 | 주식회사 포스코 | 경도와 저온 충격특성이 우수한 스테인리스 열연강판 |
| KR102146475B1 (ko) * | 2019-01-08 | 2020-08-21 | 주식회사조흥기계 | 아이스바 성형용 몰드의 제조방법 |
| CN111560569A (zh) * | 2020-06-30 | 2020-08-21 | 潘少俊 | 一种高韧性高镜面预硬钢模具钢及其制造工艺 |
| CN112481557A (zh) * | 2020-12-15 | 2021-03-12 | 浙江三门太和大型锻造有限公司 | 一种模具钢及其制备方法和口罩模具 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080069719A1 (en) * | 2004-07-12 | 2008-03-20 | Industeel Creusot | Martensitic Stainless Steel for Injection Moulds and Injection Mould Frames |
| US20090098008A1 (en) * | 2004-12-07 | 2009-04-16 | Hisashi Amaya | Martensitic Stainless Steel Oil Country Tubular Good |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3767390A (en) * | 1972-02-01 | 1973-10-23 | Allegheny Ludlum Ind Inc | Martensitic stainless steel for high temperature applications |
| JPS5521566A (en) * | 1978-08-04 | 1980-02-15 | Kawasaki Steel Corp | Martensite system stainless steel for structure with excellent weldability and workability |
| US5089067A (en) * | 1991-01-24 | 1992-02-18 | Armco Inc. | Martensitic stainless steel |
| JPH06184695A (ja) * | 1992-12-22 | 1994-07-05 | Hitachi Ltd | 溶接性，切削性にすぐれたプラスチック成形金型用鋼 |
| US5496421A (en) * | 1993-10-22 | 1996-03-05 | Nkk Corporation | High-strength martensitic stainless steel and method for making the same |
| US6045633A (en) | 1997-05-16 | 2000-04-04 | Edro Engineering, Inc. | Steel holder block for plastic molding |
| WO2002018666A1 (en) * | 2000-08-31 | 2002-03-07 | Kawasaki Steel Corporation | Low carbon martensitic stainless steel and method for production thereof |
| JP4655437B2 (ja) * | 2000-08-31 | 2011-03-23 | Ｊｆｅスチール株式会社 | 加工性に優れたマルテンサイト系ステンレス鋼 |
| JP2002121652A (ja) * | 2000-10-12 | 2002-04-26 | Kawasaki Steel Corp | 自動車足回り用Ｃｒ含有鋼 |
| AT409636B9 (de) | 2001-02-14 | 2002-12-27 | Boehler Edelstahl Gmbh & Co Kg | Stahl für kunststoffformen und verfahren zur wärmebehandlung desselben |
-
2009
- 2009-11-17 BR BRPI0904608-9A2A patent/BRPI0904608A2/pt not_active IP Right Cessation
-
2010
- 2010-11-10 MX MX2012005738A patent/MX2012005738A/es not_active Application Discontinuation
- 2010-11-10 RU RU2012125037/02A patent/RU2012125037A/ru not_active Application Discontinuation
- 2010-11-10 CN CN2010800596645A patent/CN102859021A/zh active Pending
- 2010-11-10 WO PCT/BR2010/000376 patent/WO2011060517A1/pt not_active Ceased
- 2010-11-10 US US13/510,236 patent/US20120315181A1/en not_active Abandoned
- 2010-11-10 JP JP2012539150A patent/JP2013510952A/ja active Pending
- 2010-11-10 KR KR1020127015571A patent/KR20120092674A/ko not_active Withdrawn
- 2010-11-10 EP EP10830975.8A patent/EP2503015A4/en not_active Withdrawn
- 2010-11-10 CA CA2781052A patent/CA2781052A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080069719A1 (en) * | 2004-07-12 | 2008-03-20 | Industeel Creusot | Martensitic Stainless Steel for Injection Moulds and Injection Mould Frames |
| US20090098008A1 (en) * | 2004-12-07 | 2009-04-16 | Hisashi Amaya | Martensitic Stainless Steel Oil Country Tubular Good |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014105795A1 (en) * | 2012-12-28 | 2014-07-03 | Hackett Micah J | Iron-based composition for fuel element |
| CN104981559A (zh) * | 2012-12-28 | 2015-10-14 | 泰拉能源公司 | 用于燃料元件的铁基组合物 |
| US9303295B2 (en) | 2012-12-28 | 2016-04-05 | Terrapower, Llc | Iron-based composition for fuel element |
| RU2665664C2 (ru) * | 2012-12-28 | 2018-09-03 | ТерраПауэр, ЭлЭлСи | Композиция на основе железа для топливного элемента |
| US10157687B2 (en) | 2012-12-28 | 2018-12-18 | Terrapower, Llc | Iron-based composition for fuel element |
| US10930403B2 (en) | 2012-12-28 | 2021-02-23 | Terrapower, Llc | Iron-based composition for fuel element |
| CN104250673A (zh) * | 2013-06-25 | 2014-12-31 | 江苏万恒铸业有限公司 | 一种降低核级不锈钢铸件铁素体含量的熔炼工艺 |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0904608A2 (pt) | 2013-07-02 |
| MX2012005738A (es) | 2012-06-13 |
| EP2503015A4 (en) | 2013-07-17 |
| RU2012125037A (ru) | 2013-12-27 |
| EP2503015A1 (en) | 2012-09-26 |
| CA2781052A1 (en) | 2011-05-26 |
| CN102859021A (zh) | 2013-01-02 |
| WO2011060517A8 (pt) | 2012-07-12 |
| WO2011060517A1 (pt) | 2011-05-26 |
| KR20120092674A (ko) | 2012-08-21 |
| JP2013510952A (ja) | 2013-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2702517C2 (ru) | Износостойкий сплав | |
| AU2013344748B2 (en) | Method for the production of high-wear-resistance martensitic cast steel and steel with said characteristics | |
| AU2007259069B2 (en) | Duplex stainless steel | |
| KR100931448B1 (ko) | 오스테나이트계 스테인레스강 | |
| US8017071B2 (en) | Corrosion-resistant, cold-formable, machinable, high strength, martensitic stainless steel | |
| US8900382B2 (en) | Hot worked steel and tool made therewith | |
| US20120315181A1 (en) | Stainless mold steel with lower delta ferrite content | |
| JP2012522886A (ja) | 優れた靭性及び熱伝導率を有する熱間工具鋼 | |
| US20130243639A1 (en) | Tool steel for extrusion | |
| JP2024031942A (ja) | 鋼部品およびその製造方法 | |
| EP3126537B1 (en) | Dual-phase stainless steel | |
| JP7370992B2 (ja) | 高抗張力鋼および高靭性鋼 | |
| EP3333277B1 (en) | High-strength low-alloy steel with high resistance to high-temperature oxidation | |
| CN115917031B (zh) | 热加工工具钢 | |
| CN103981437B (zh) | 一种高强度、高韧性合金钢、制备方法及其在钢构中的应用 | |
| US11486015B2 (en) | Method for producing a steel material, and steel material | |
| TWI907440B (zh) | 熱加工工具鋼 | |
| WO2025012182A1 (en) | A duplex stainless steel and use thereof | |
| WO2025080191A1 (en) | An object which is a steel or a bar | |
| TW201641717A (zh) | 熱工作工具鋼 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: VILLARES METALS S/A, BRAZIL Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BARBOSA, CELSO ANTONIO;MESQUITA, REFAEL AGNELLI;REEL/FRAME:028874/0265 Effective date: 20120801 |
|
| STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |