US3086858A - Hard cast alloy - Google Patents

Hard cast alloy Download PDF

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Publication number
US3086858A
US3086858A US44554A US4455460A US3086858A US 3086858 A US3086858 A US 3086858A US 44554 A US44554 A US 44554A US 4455460 A US4455460 A US 4455460A US 3086858 A US3086858 A US 3086858A
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US
United States
Prior art keywords
alloy
hard
alloys
cast alloy
vanadium
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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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US44554A
Inventor
Lester R Edminster
Czyzewski Harry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
West Coast Alloys Co
Original Assignee
West Coast Alloys Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by West Coast Alloys Co filed Critical West Coast Alloys Co
Priority to US44554A priority Critical patent/US3086858A/en
Application granted granted Critical
Publication of US3086858A publication Critical patent/US3086858A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/06—Cast-iron alloys containing chromium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053—Fe as the principal constituent
    • B23K35/308—Fe as the principal constituent with Cr as next major constituent

Definitions

  • the present invention relates to metal alloys and more particularly to metal alloys useful for hard surfacing, and as hard metal castings.
  • Another object of the invention is to provide an alloy that may be cast to form a hard, corrosion-resistant body.
  • a further object of the invention is to provide a hard facing alloy that will form a hard, long-wearing surface.
  • Still another object is to provide a relatively inexpensive hard facing alloy.
  • Sulfur and phosphorus may be present in nominal amounts without harm to the alloy and small amounts of copper may also be tolerated.
  • Tungsten may be utilized in place of vanadium and molybdenum for part or all of these latter elements.
  • tungsten may be present within substantially the same range as the replaced element but preferably in somewhat lesser amount.
  • vanadium and molybdenum it preferably is present in amounts of from about 3.0% to 8.0%.
  • Tungsten is, at the present time at least, more costly than vanadium and molybdenum, but its presence ice will render the alloy somewhat harder and give it greater thermal stability and may be desired for certain purposes in spite of the greater cost of the alloy.
  • a particular advantage of the alloy is that it has a relatively low coefficient of friction with respect to itself and is therefore highly useful in making metal-to-metal seals for rotating shafts and the like since by reason of the low coeflicient of friction less heat is developed at the face-to-face seal than is developed with other hard facing alloys.
  • the alloy has high thermal stability and retains its hardness even after being heated to relatively high temperatures. It also retains its wear resistance at quite high temperatures.
  • the alloys of the invention are also relatively hard and wear resistant, the alloys having a hardness of about Rockwell C as cast, and a hardness of about Rockwell C after heat treatment.
  • alloys of the invention comprises relatively inexpensive ingredients and the alloys are, therefore, relatively low in cost.
  • alloys of the invention may be successfully cast and may also be used for hard facing metal parts in which case the alloy may be applied by conventional welding techniques.

Description

rates The present invention relates to metal alloys and more particularly to metal alloys useful for hard surfacing, and as hard metal castings.
It is an object of the present invention to provide a composition or alloy that will form a hard, corrosionresistant surface.
Another object of the invention is to provide an alloy that may be cast to form a hard, corrosion-resistant body.
A further object of the invention is to provide a hard facing alloy that will form a hard, long-wearing surface.
Still another object is to provide a relatively inexpensive hard facing alloy.
More particularly, it is an object of the invention to provide an alloy which has a relatively low coefiicient of friction so that a minimum of heat is generated between two contacting bodies formed of or surfaced with such alloy when such "bodies are moved relative to one another.
Other objects and advantages of the invention will become more apparent hereinafter.
Alloys made in accordance with the invention fall within the following ranges:
Sulfur and phosphorus may be present in nominal amounts without harm to the alloy and small amounts of copper may also be tolerated.
Tungsten may be utilized in place of vanadium and molybdenum for part or all of these latter elements. As a replacement for one of the elements tungsten may be present within substantially the same range as the replaced element but preferably in somewhat lesser amount. As a replacement for both vanadium and molybdenum it preferably is present in amounts of from about 3.0% to 8.0%. Tungsten is, at the present time at least, more costly than vanadium and molybdenum, but its presence ice will render the alloy somewhat harder and give it greater thermal stability and may be desired for certain purposes in spite of the greater cost of the alloy.
A particular advantage of the alloy is that it has a relatively low coefficient of friction with respect to itself and is therefore highly useful in making metal-to-metal seals for rotating shafts and the like since by reason of the low coeflicient of friction less heat is developed at the face-to-face seal than is developed with other hard facing alloys. The alloy has high thermal stability and retains its hardness even after being heated to relatively high temperatures. It also retains its wear resistance at quite high temperatures.
The alloys of the invention are also relatively hard and wear resistant, the alloys having a hardness of about Rockwell C as cast, and a hardness of about Rockwell C after heat treatment.
.It will be noted that the major portion of alloys of the invention comprises relatively inexpensive ingredients and the alloys are, therefore, relatively low in cost. As indicated earlier the alloys of the invention may be successfully cast and may also be used for hard facing metal parts in which case the alloy may be applied by conventional welding techniques.
Having illustrated a preferred embodiment of the invention, it should be understood that the invention permits of modification in arrangement and detail. We claim as our invention all such modifications as come within the true spirit and scope of the appended claims.
We claim:
1. An alloy containing 1.7 to 5.0% carbon, 1.0 to 5.7% manganese, 0.2 to 2.2% silicon, 1.0 to 6.3% nickel, 24.0 to 37.0% chromium, 2.0 to 6.0% molybdenum, 2.8 to 5.0% vanadium, and the balance iron.
2. An alloy containing 3.8 to 4.2% carbon, 3.8 to 4.2% manganese, 1.0 to 1.4% silicon, 1.8 to 2.2% nickel, 25.0 to 28.0% chromium, 3.4 to 3.8% molybdenum, 2.4 to 2.7% vanadium, and the balance iron.
3. An alloy containing 1.7 to 5.0% carbon, 1.0 to 5.7% manganese, 0.2 to 2.2% silicon, 1.0 to 6.3% nickel, 24.0 to 37.0% chromium, 4 to 11% of metals selected from the class consisting of molybdenum, vanadium and tungsten, and the balance iron.
4. An alloy containing 1.7 to 5.0% carbon, 1.0 to 5.7% manganese, 0.2 to 2.2% silicon, 1.0 to 6.3% nickel, 24.0 to 37.0% chromium, 3.0 to 8.0% tungsten, and the balance iron.
References Cited in the file of this patent FOREIGN PATENTS 457,841 Canada July 5, 1949

Claims (1)

1. AN ALLOY CONTAINING 1.7 TO 5.0% CARBON, 1.0 TO 5.7% MANGANESE, 0.2 TO 2.2% SILICON, 1.0 TO 6.3% NICKEL, 24.0 TO 37.0% CHROMIUM, 2.0 TO 6.0% MOLYBDENUM, 2.8 TO 5.0% VANADIUM, AND THE BALANCE IRON.
US44554A 1960-07-22 1960-07-22 Hard cast alloy Expired - Lifetime US3086858A (en)

Priority Applications (1)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236920A (en) * 1978-05-02 1980-12-02 Uddeholms Aktiebolag Steel alloy
US4643767A (en) * 1984-11-19 1987-02-17 Cabot Corporation Nuclear grade steels
WO1991002101A1 (en) * 1989-08-04 1991-02-21 Warman International Ltd. A ferrochromium alloy
US5252149A (en) * 1989-08-04 1993-10-12 Warman International Ltd. Ferrochromium alloy and method thereof
US5795540A (en) * 1994-03-18 1998-08-18 Ksb Aktiengesellschaft Corrosion and wear-resistant chill casting
US6165288A (en) * 1994-05-17 2000-12-26 Ksb Aktienegsellschaft Highly corrosion and wear resistant chilled casting
US20110162612A1 (en) * 2010-01-05 2011-07-07 L.E. Jones Company Iron-chromium alloy with improved compressive yield strength and method of making and use thereof
US9499889B2 (en) 2014-02-24 2016-11-22 Honeywell International Inc. Stainless steel alloys, turbocharger turbine housings formed from the stainless steel alloys, and methods for manufacturing the same
US11492690B2 (en) 2020-07-01 2022-11-08 Garrett Transportation I Inc Ferritic stainless steel alloys and turbocharger kinematic components formed from stainless steel alloys

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA457841A (en) * 1949-07-05 T. Cape Arthur Ferrous alloy

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA457841A (en) * 1949-07-05 T. Cape Arthur Ferrous alloy

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236920A (en) * 1978-05-02 1980-12-02 Uddeholms Aktiebolag Steel alloy
US4643767A (en) * 1984-11-19 1987-02-17 Cabot Corporation Nuclear grade steels
WO1991002101A1 (en) * 1989-08-04 1991-02-21 Warman International Ltd. A ferrochromium alloy
US5252149A (en) * 1989-08-04 1993-10-12 Warman International Ltd. Ferrochromium alloy and method thereof
US5795540A (en) * 1994-03-18 1998-08-18 Ksb Aktiengesellschaft Corrosion and wear-resistant chill casting
US6165288A (en) * 1994-05-17 2000-12-26 Ksb Aktienegsellschaft Highly corrosion and wear resistant chilled casting
US20110162612A1 (en) * 2010-01-05 2011-07-07 L.E. Jones Company Iron-chromium alloy with improved compressive yield strength and method of making and use thereof
US8479700B2 (en) 2010-01-05 2013-07-09 L. E. Jones Company Iron-chromium alloy with improved compressive yield strength and method of making and use thereof
US9499889B2 (en) 2014-02-24 2016-11-22 Honeywell International Inc. Stainless steel alloys, turbocharger turbine housings formed from the stainless steel alloys, and methods for manufacturing the same
US11492690B2 (en) 2020-07-01 2022-11-08 Garrett Transportation I Inc Ferritic stainless steel alloys and turbocharger kinematic components formed from stainless steel alloys

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