US2598714A - Machinable high cobalt low carbon alloys for die-casting molds - Google Patents
Machinable high cobalt low carbon alloys for die-casting molds Download PDFInfo
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- US2598714A US2598714A US170466A US17046650A US2598714A US 2598714 A US2598714 A US 2598714A US 170466 A US170466 A US 170466A US 17046650 A US17046650 A US 17046650A US 2598714 A US2598714 A US 2598714A
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- cobalt
- steel
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- 238000004512 die casting Methods 0.000 title claims description 27
- 239000010941 cobalt Substances 0.000 title claims description 24
- 229910017052 cobalt Inorganic materials 0.000 title claims description 24
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title claims description 23
- 229910001339 C alloy Inorganic materials 0.000 title description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 229910052799 carbon Inorganic materials 0.000 claims description 20
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 19
- 229910052721 tungsten Inorganic materials 0.000 claims description 19
- 239000010937 tungsten Substances 0.000 claims description 19
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 17
- 229910052750 molybdenum Inorganic materials 0.000 claims description 17
- 239000011733 molybdenum Substances 0.000 claims description 17
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 14
- 229910052804 chromium Inorganic materials 0.000 claims description 14
- 239000011651 chromium Substances 0.000 claims description 14
- 229910052720 vanadium Inorganic materials 0.000 claims description 13
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 238000005336 cracking Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 229910001315 Tool steel Inorganic materials 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 9
- 235000010210 aluminium Nutrition 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 25
- 239000010959 steel Substances 0.000 description 25
- 229910045601 alloy Inorganic materials 0.000 description 13
- 239000000956 alloy Substances 0.000 description 13
- 229910001369 Brass Inorganic materials 0.000 description 12
- 239000010951 brass Substances 0.000 description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 238000003754 machining Methods 0.000 description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 235000019589 hardness Nutrition 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910000997 High-speed steel Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- CODVACFVSVNQPY-UHFFFAOYSA-N [Co].[C] Chemical compound [Co].[C] CODVACFVSVNQPY-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 150000001868 cobalt Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances 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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
Definitions
- the present invention relates to machinable, high cobalt, low carbon alloys for die-casting molds and it particularly relates to die-casting molds useful for the die-casting of. brass, aluminum and copper alloys.
- an alloy containing 0.15 to 1.60% carbon, to 3% silicon and 0 to 16% cobalt may be used quite satisfactorily in limited value as a base material for die-casting molds, rather it has a very short life when so used and tends to crack and craze. Moreover it has to be heat treated after machining to final form.
- the alloy will give die-casting molds of extremely long life. Cracking and crazing is substantially avoided altogether, even though the die-castingmold may be utilized for long periods of time.
- the most satisfactory steels contain from about 0.02 to 0.05 per cent of carbon, about 2 to 6 per cent of chromium, about 16 to 30 per cent of cobalt, about 2 to '7 per cent each of molybdenum and tungsten, and from about 0.75 to 2.5 per cent of vanadium.
- the molybdenum present in the steels shall desirably exceed the amount of tungsten. Suitable results are had with the amount of molybdenum and tungsten substantially in the ratio, of :4, and for some purposes twice the amount of molybdenum plus the amount of tungsten shall be approximately 14.
- Manganese and silicon are kept relatively low. say not over about 0.5 per cent each. Likewise, phosphorus and sulfur should not exceed about .025 per cent each.
- the remainder of the steels is iron together with impurities consequent upon the normal production of steels of this general type, but it will be understood that other alloying elements may be present in amounts that do not impair the properties characteristic of the invention. Inasmuch as such impurities and additional alloying elements exert no function influencing the invention, it may be said, for brevity, that the remainder of the steel is efiectively iron.
- composition of the present invention it is particularly suitable either for brass die-casting at 1800 to 1900 F. or aluminum diecasting at 1100 F. to use an alloy having the following composition in percentages by weight:
- This alloy although not satisfactory as a cutting tool, is most satisfactory for making diecasting molds. It may be subjected to a heat 1 treatment and then machined and then after heat-treating machining, no further treatment is necessary. Its composition is desirably adjusted as above to have a Brinell hardness of 440-130 490 with 477 being preferred. The Rock well hardness will be between 44 to 48.
- the carbon be kept below 0.15% and desirably below 0.1%. It is surprising that the preferred cobalt alloy has nocommercial .value as a high speed steel, but unexpectedly has high value as a die-casting steel. 1
- Thedies made of a 0.05% carbon, to 30% cobalt, and 0.15% silicon SUB'EIIWillI-lot. deform under metal casting temperatures up to 2200 .F..
- the alloys of the present invention rcontain substantially no free carbides.
- the machining may take place .as a last operation or after heat treatment in the novel steel composition of the present invention.
- Die-casting steel of non-cutting tool steel variety machinable after heat treatment and highly resistant to cracking and crazing "at aluminum and brass casting temperatures of 1100 to 2200 F., containing about 0.05 to 0.10 per cent of carbon, about 2 to '6 per cent of chromium, about 16 to 30 per cent of cobalt, about 2 to '7 per cent of molybdenum, about 0.75 to 2.5 per cent of vanadium, about 2 to 7 per cent of tungsten, and the remainder iron.
- a machinable high cobalt low carbon mold for die casting of brass and aluminum said alloy being devoid of cutting steel characteristics and being machinable after hardening, which will stand up for long periods of time without cracking and crazing, said alloy having a silicon content of below 1%, a cobalt content of 16 to 30%, a carbon content of not over 0.1%, a chromium content of 2 to 6%, a molybdenum and tungsten content 'each of about 2 to 7% and a vanadium content of 0.75 to 2.5%, with phosphorus and sulphur not exceeding .025%, the remainder consisting of iron.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
Patented June 3, 1952 UNITED STATES PATENT OFFICE MACHINABLE HIGH COBALT LOW CARBON ALLOYS FOR DIE-CASTING MOLDS No Drawing. Application June 26, 1950, Serial No. 170,466
9 Claims. 1
The present invention relates to machinable, high cobalt, low carbon alloys for die-casting molds and it particularly relates to die-casting molds useful for the die-casting of. brass, aluminum and copper alloys.
It is among the objects of the present invention to provide novel, high cobalt, low carbon steels which are particularly useful in forming die-casting molds, particularly for the die-casting of metals and having melting points substantially above 700 F. and not in excess of 2100 F. and with a preferred range from 1100 F. to about 1900" F.
It has been found that a rather surprising change takes place in high cobalt, low carbon steel alloys where the proportions of silicon, cobalt and carbon are controlled in definite proportions.
For example, whereas an alloy containing 0.15 to 1.60% carbon, to 3% silicon and 0 to 16% cobalt may be used quite satisfactorily in limited value as a base material for die-casting molds, rather it has a very short life when so used and tends to crack and craze. Moreover it has to be heat treated after machining to final form.
Surprisingly, it has been found that when the silicon content is kept below 1% and the cobalt content is kept from 16 to about 30%, with a low carbon not over 0.10% and desirably about 0.05%, that a new cobalt, low carbon alloy is obtained having quite remarkable properties. While it is not suitable for a machine cutting steel, nevertheless it serves most satisfactorily as a steel for making die-casting molds. This type of steel not only is machinable after hardening, so that the necessary mold may be readily formed, but in addition does not require any after-treatment. All heat treatment of this cobalt steel may be applied before the machining operation.
Moreover, the alloy will give die-casting molds of extremely long life. Cracking and crazing is substantially avoided altogether, even though the die-castingmold may be utilized for long periods of time.
The most satisfactory steels contain from about 0.02 to 0.05 per cent of carbon, about 2 to 6 per cent of chromium, about 16 to 30 per cent of cobalt, about 2 to '7 per cent each of molybdenum and tungsten, and from about 0.75 to 2.5 per cent of vanadium. The molybdenum present in the steels shall desirably exceed the amount of tungsten. Suitable results are had with the amount of molybdenum and tungsten substantially in the ratio, of :4, and for some purposes twice the amount of molybdenum plus the amount of tungsten shall be approximately 14.
Manganese and silicon are kept relatively low. say not over about 0.5 per cent each. Likewise, phosphorus and sulfur should not exceed about .025 per cent each. The remainder of the steels is iron together with impurities consequent upon the normal production of steels of this general type, but it will be understood that other alloying elements may be present in amounts that do not impair the properties characteristic of the invention. Inasmuch as such impurities and additional alloying elements exert no function influencing the invention, it may be said, for brevity, that the remainder of the steel is efiectively iron.
For most purposes the carbon content should be at the lower end of the range stated, and desirably less than about 0.05 per cent. Particularly satisfactory results have been had from a steel of the following analysis:
Less than 6.1 per cent of carbon About 4 per cent of chromium About per cent of cobalt About 5 per cent of molybdenum About 4 per cent of tungsten About 1.5 per cent of vanadium Steels conforming to these proportions possess characteristics rendering them outstanding for die-casting dies, especially for the die-casting of high melting metals and alloys, such, for example, as copper, brass, and other copper alloys. .The tendency toward cracking or heat checking that has been a serious problem in this die casting of such materials is greatly reduced and the dies exhibit greatly improved life.
As a preferred composition of the present invention, it is particularly suitable either for brass die-casting at 1800 to 1900 F. or aluminum diecasting at 1100 F. to use an alloy having the following composition in percentages by weight:
Ingredients Preferred Range Below 1 or 0.05 to 0.2. Not over 0.10 or 0.10 to 0.07. Above 16 or 16 to 35.
.5to4 zws. 2to 6. .5 0.5 to 2.5. 20 to 10.
This alloy, although not satisfactory as a cutting tool, is most satisfactory for making diecasting molds. It may be subjected to a heat 1 treatment and then machined and then after heat-treating machining, no further treatment is necessary. Its composition is desirably adjusted as above to have a Brinell hardness of 440-130 490 with 477 being preferred. The Rock well hardness will be between 44 to 48.
Even though subjected to many thousands of die-casting operations, dies of this alloy will neither crack nor will they be deformedy 7 Although various changes maybe made in the above composition, desirably these changes are not productive of the most satisfactory alloy 1 and the most desired, unusual properties. 'For example, if the tungsten is eliminated, the cobalt carbon remaining at about 0.10%.
may be reduced between 10 to with' the factory and do not have the peculiar efiectiveness of the preferred alloy stated above, the
following may be given:
Ingredient Percentages by Weight Carbon ..l0 12 .09 Manganese .40 36 54 Silicom .81 p .88 .46 Chromium" 5. 53 5. 59 5. 56 Yan'udium 1.13 -1. 08' 1.14 Molybdenum 2. 51' 2. 50 1. 20
. As typical of an alloy which although of the same general composition is quite different from that of the present invention in having tool steel roperties but not satisfactory die-cast steel properties, the following may be given in percenta ges by weight:
Silicon up to 3% 1 Carbon 0.15 to. 1.6
Cobalt 1 to 16% Manganese 0 to 2 Chromium 0 to 15.0 Tungsten i 0.2 to 6 Vanadium 0 to 5 Molybdenum "0:6 'to 3:5
It is important at all times that the carbon be kept below 0.15% and desirably below 0.1%. It is surprising that the preferred cobalt alloy has nocommercial .value as a high speed steel, but unexpectedly has high value as a die-casting steel. 1
Thedies made of a 0.05% carbon, to 30% cobalt, and 0.15% silicon SUB'EIIWillI-lot. deform under metal casting temperatures up to 2200 .F..
These 00103108138615 are precipitation hardening, and in annealing them it is important to cool them in the range from 1300. to 900 F. more rapidly than prevails in furnace cooling, as by cooling in air or by some other accelerated 'method, to avoid :the rehard'ening that would otherwise occur. Dies from these steels are made by machining after heat treatment. For these after many thOuSa'fl'dS 'Of operating C'Y'ClS, and
in this respect are'superiorto high speed steels that have been used for the same purpose. They possess also other desirable physical and mechanical properties, they forge easily, and they are not difficult to machine, even at hardnesses of 350 Brinellfi t In contrast to other steels, the alloys of the present inventionrcontain substantially no free carbides.
In contrast to other steels which are machined from unannealed bar stock, then tempered by reheating to 1100 to 1200 C. followed by quenching in water and/or oil, the machining may take place .as a last operation or after heat treatment in the novel steel composition of the present invention.
Any chromium or vanadium may be altogether omitted without loss of these valuable properties. The embodiment of the invention shown and described herein is to be considered merely as illustrative, as the invention is susceptible to variation, modification and change within the spirit and scope of the appended claims.
Having now particularly described and ascertained the nature of the invention,'and in what manner the same is to be performed, what is claimed is:
1. Die-casting steel of non-cutting tool steel variety, machinable after heat treatment and highly resistant to cracking and crazing "at aluminum and brass casting temperatures of 1100 to 2200 F., containing about 0.05 to 0.10 per cent of carbon, about 2 to '6 per cent of chromium, about 16 to 30 per cent of cobalt, about 2 to '7 per cent of molybdenum, about 0.75 to 2.5 per cent of vanadium, about 2 to 7 per cent of tungsten, and the remainder iron.
2. Die-casting die steel of non-cutting tool steel variety, machinable after heat treatment and highly resistant 'to cracking and crazin'g at aluminum and brass casting temperatures of 1100 F. to 2200 F., containing about 0.02to 0.10 per cent of carbon, about 2 'to 6 per. cent of chromium, about 16 to 30ipe'r cent of cobalt, about 2 to '7 per cent of molybdenum, about 0.75 to 2.5 per cent of vanadium, about 2 to 7 per cent of tungsten, and the remainder iron, and. the molybdenum being present in an amount greater than the tungsten.
3. Die-casting die steel of non-cutting tool steel variety, machinable after heat treatment and highly resistant to cracking and owning at aluminum and brass casting temperatures of 1100 F. to 2200" F.,,containing about 0.02 to 0.10 per cent carbon, about 2 to 6 per cent of chromium, about 16 to 30 per cent of cobalt, about 2 to '7 per cent ofmolybdenum, about 0175 'to 2.5 per cent of vanadium, about 2 to '7 percent of tungsten, and the remainder iron, and theJmolybdenum and tungsten being present in the ratio of about 5:4. I 4. Die-casting die steel. of no eoutti'ng tool steel variety, machinable after heat treatment and wholly resistant to cracking. and orazin'g' at aluminum and brass casting temperatures of 1100 F. to 2200" F., containing not overjabout 0.1 per cent of carbon, about 4 per cent of chromium, about 25 per cent of cobalt, about 5 per cent of molybdenum, about 1.5 per. cent of vanadium, about 4 per cent of tungsten, and the remainder iron.
5. Die-casting die steel of non-cutting tool steel variety, machinable after heat treatment and highly resistant to cracking and crazing at aluminum and brass casting temperatures of 1100" F.
to 2200 F1, containing about 0.02 1:00.15 per cent of carbon, about 2 to 6 per cent of chromium, about 16 to 30 per cent of cobalt, about 2 to 7 per cent of molybdenum, about 0.75 to 2.5 per cent of vanadium, about 2 to 7 per cent of tungsten, and the remainder iron, and the molybdenum and tungsten being present in amounts such that twice the former plus the latter. is about 14.
6. As a new article of manufacture, a diecasting die of non-cutting tool steel variety, machinable after heat treatment and highly resistant to cracking and crazing at aluminum and brass casting temperatures of 1100 F. to 2200 F., composed of steel containing about 0.02 to 0.10 per cent of carbon, about 2 to 6 per cent of chromium, about 16 to 30 per cent of cobalt, about 2 to 7 per cent of molybdenum, about 0.75 to 2.5 per cent of vanadium, about 2 to 7 per cent of tungsten, and the remainder iron.
7. As a new article of manufacture, a diecasting die of non-cutting tool steel variety, machinable after heat treatment and highly resistant to cracking and crazing at aluminum and brass casting temperatures of 1100 F. to 2200 F.,
composed of steel containing about 0.02 to 0.10 1
able after heat treatment and highly resistant to cracking and crazing at aluminum and brass casting temperatures of 1100 F. to 2200 F., composed of steel containing not over about 0.1 per cent of carbon, about 4 per cent of chromium, about 25 per cent of cobalt, about 5 per cent of molybdenum, about 1.5 per cent of vanadium, about 4 per cent of tungsten, and the remainder Hon.
9. A machinable high cobalt low carbon mold for die casting of brass and aluminum, said alloy being devoid of cutting steel characteristics and being machinable after hardening, which will stand up for long periods of time without cracking and crazing, said alloy having a silicon content of below 1%, a cobalt content of 16 to 30%, a carbon content of not over 0.1%, a chromium content of 2 to 6%, a molybdenum and tungsten content 'each of about 2 to 7% and a vanadium content of 0.75 to 2.5%, with phosphorus and sulphur not exceeding .025%, the remainder consisting of iron.
JOHN A. NELSON. CHARLES W. SCHUCK.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 2,099,509 Blessing Nov. 16, 1937 2,201,072 Blessing May 14, 1940 2,289,449 Nelson July 14, 1942
Claims (1)
1. DIE-CASTING STEEL OF NON-CUTTING TOOL STEEL VARIETY, MACHINABLE AFTER HEAT TREATMENT AND HIGHLY RESISTANT TO CRACKING AND CRAZING AT ALUMI NUM AND BRASS CASTING TEMPERATURES OF 1100* F. TO 2200* F., CONTAINING ABOUT 0.05 TO 0.10 PER CENT OF CARBON, ABOUT 2 TO 6 PER CENT OF CHROMIUM, ABOUT 16 TO 30 PER CENT OF COBALT, ABOUT 2 TO 7 PER CENT OF MOLYBDENUM, ABOUT 0.75 TO 2.5 PER CENT OF VANADIUM, ABOUT 2 TO 7 PER CENT OF TUNGSTEN, AND THE REMAINDER IRON.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US170466A US2598714A (en) | 1950-06-26 | 1950-06-26 | Machinable high cobalt low carbon alloys for die-casting molds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US170466A US2598714A (en) | 1950-06-26 | 1950-06-26 | Machinable high cobalt low carbon alloys for die-casting molds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2598714A true US2598714A (en) | 1952-06-03 |
Family
ID=22619954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US170466A Expired - Lifetime US2598714A (en) | 1950-06-26 | 1950-06-26 | Machinable high cobalt low carbon alloys for die-casting molds |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2598714A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3508912A (en) * | 1965-12-15 | 1970-04-28 | Crucible Inc | Tool steel containing chromium and cobalt |
| US3833360A (en) * | 1971-12-29 | 1974-09-03 | Lenin Kohaszati Muvek | Super-high-speed steels of high cutting capacity |
| US3859080A (en) * | 1971-01-04 | 1975-01-07 | Us Interior | Corrosion resistant alloys |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2099509A (en) * | 1935-11-23 | 1937-11-16 | Edgar F Blessing | Steel alloy |
| US2201072A (en) * | 1937-11-11 | 1940-05-14 | Chas W Guttzeit | Alloy steel |
| US2289449A (en) * | 1941-04-16 | 1942-07-14 | Bracburn Alloy Steel Corp | Die steel for hot working |
-
1950
- 1950-06-26 US US170466A patent/US2598714A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2099509A (en) * | 1935-11-23 | 1937-11-16 | Edgar F Blessing | Steel alloy |
| US2201072A (en) * | 1937-11-11 | 1940-05-14 | Chas W Guttzeit | Alloy steel |
| US2289449A (en) * | 1941-04-16 | 1942-07-14 | Bracburn Alloy Steel Corp | Die steel for hot working |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3508912A (en) * | 1965-12-15 | 1970-04-28 | Crucible Inc | Tool steel containing chromium and cobalt |
| US3859080A (en) * | 1971-01-04 | 1975-01-07 | Us Interior | Corrosion resistant alloys |
| US3833360A (en) * | 1971-12-29 | 1974-09-03 | Lenin Kohaszati Muvek | Super-high-speed steels of high cutting capacity |
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