US2762706A - Low melting point alloys - Google Patents

Low melting point alloys Download PDF

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Publication number
US2762706A
US2762706A US463321A US46332154A US2762706A US 2762706 A US2762706 A US 2762706A US 463321 A US463321 A US 463321A US 46332154 A US46332154 A US 46332154A US 2762706 A US2762706 A US 2762706A
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United States
Prior art keywords
melting point
low melting
alloy
nickel
alloys
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Expired - Lifetime
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US463321A
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Arthur T Cape
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Coast Metals Inc
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Coast Metals Inc
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Priority to US463321A priority Critical patent/US2762706A/en
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • 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
    • B23K35/3033—Ni as the principal constituent

Definitions

  • This invention relates generally to low melting point alloys, but has reference more particularly to boron-free alloys of this type which are especially adapted for brazing and hard facing purposes.
  • the iron may be as low as zero, but dilution of the alloy with iron up to 35 does not affect the properties of the alloy.
  • the alloy as indicated, is free from boron, and is therefore well adapted for atomic energy purposes, due to its low absorption of neutrons, which is not true of boron-containing alloys.
  • the hardness of the alloy varies from 40 to 64 Rockwell C scale.
  • a particular advantage of the alloy is that high amounts of silicon may be present, and yet strong bonds are obtained.
  • the alloys have melting points within the range of 1825 F.-2000 F.
  • Copper may be substituted for nickel in any amount up to about 14 of the nickel.
  • copper may be used in an amount up to of the alloy.
  • a boron-free, low melting point alloy especially adapted for brazing purposes, and having low absorption for neutrons, said alloy consisting of about 1 to about 6% phosphorus, about 2% to about 15% of at least one metal selected from the group consisting of molybdenum and chromium, about 4% to about 20% of silicon, about 40% to about 93% nickel, and up to about 35% iron.
  • a boron-free, low melting point alloy consisting of about 3.5% phosphorus, about 5.40% molybdenum, about 11.80% silicon, about nickel, and about 29.3% iron.
  • a boron-free, low melting point alloy consisting of chromium, 10% silicon, 5% copper, and 1% phosphorus.
  • a boron-free, low melting point alloy consisting of 62% nickel, 12% chromium, 20% silicon, and 1% phosphorus.
  • Van Natten The ABC's of Silver Alloys Brazing, Iron Age, January 8, 1948, page 53.

Description

United States Patent LOW MEL'IING POINT ALLOYS Arthur T. Cape, Los Angeles, Calif., assignor to Coast Metals, Inc., Little Ferry, N. J., a corporation of Delaware No Drawing. Application October 19, 1954, 'Serial No. 463,321
Claims. (Cl. 7 5-134) This invention relates generally to low melting point alloys, but has reference more particularly to boron-free alloys of this type which are especially adapted for brazing and hard facing purposes.
Alloys made in accordance with the invention fall within the following ranges:
Range, Preferred, percent percent 1-6 3. 50 2-15 5. 40 M0 Sill 4-20 11. 80 40-93 60. 00 Iron 0-35 29. 3
As indicated by the above range, the iron may be as low as zero, but dilution of the alloy with iron up to 35 does not affect the properties of the alloy.
The alloy, as indicated, is free from boron, and is therefore well adapted for atomic energy purposes, due to its low absorption of neutrons, which is not true of boron-containing alloys.
The hardness of the alloy varies from 40 to 64 Rockwell C scale.
A particular advantage of the alloy is that high amounts of silicon may be present, and yet strong bonds are obtained.
The alloys have melting points within the range of 1825 F.-2000 F.
Copper may be substituted for nickel in any amount up to about 14 of the nickel. For example, when the alloy contains 40% nickel, copper may be used in an amount up to of the alloy.
72% nickel, 12%
2,762,706 Patented Sept. 11, 1956 ice It will be understood that various changes may be made in the alloys without departing from the scope of the appended claims.
Having thus described my invention, I claim:
1. A boron-free, low melting point alloy, especially adapted for brazing purposes, and having low absorption for neutrons, said alloy consisting of about 1 to about 6% phosphorus, about 2% to about 15% of at least one metal selected from the group consisting of molybdenum and chromium, about 4% to about 20% of silicon, about 40% to about 93% nickel, and up to about 35% iron.
2. An alloy, as defined in claim 2, in which copper may be substituted for nickel in any amount up to about one-fourth of the nickel.
3. A boron-free, low melting point alloy consisting of about 3.5% phosphorus, about 5.40% molybdenum, about 11.80% silicon, about nickel, and about 29.3% iron.
4. A boron-free, low melting point alloy consisting of chromium, 10% silicon, 5% copper, and 1% phosphorus.
5. A boron-free, low melting point alloy consisting of 62% nickel, 12% chromium, 20% silicon, and 1% phosphorus.
5% copper,
Van Natten: The ABC's of Silver Alloys Brazing, Iron Age, January 8, 1948, page 53.

Claims (1)

1. A BORON-FREE, LOW MELTING POINT ALLOY, ESPECIALLY ADAPTED FOR BRAZING PURPOSES, AND HAVING LOW ABSORPTION FOR NEUTRONS, SAID ALLOY CONSISTING OF ABOUT 1 TO ABOUT 6% PHOSPHORUS, ABOUT 2% TO ABOUT 15% OF AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND CHROMIUM, ABOUT 4% TO ABOUT 20% OF SILICON, ABOUT 40% TO ABOUT 93% NICKEL, AND UP TO ABOUT 35% IRON.
US463321A 1954-10-19 1954-10-19 Low melting point alloys Expired - Lifetime US2762706A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864693A (en) * 1956-04-24 1958-12-16 Coast Metals Inc Brazing alloys
US2880086A (en) * 1957-03-06 1959-03-31 Coast Metals Inc Low melting point nickel-iron alloys
US2902617A (en) * 1955-12-12 1959-09-01 Gen Motors Corp Spark plug and method for making same
US3017532A (en) * 1956-02-27 1962-01-16 Gen Am Transport Electrical elements
US3173783A (en) * 1962-07-16 1965-03-16 American Potash & Chem Corp Ternary alkali metal alloy
US3231971A (en) * 1961-01-19 1966-02-01 Inland Steel Co Method of producing fusion coated metal base
US3890145A (en) * 1969-10-28 1975-06-17 Onera (Off Nat Aerospatiale) Processes for the manufacture of tungsten-based alloys and in the corresponding materials
US4379121A (en) * 1981-07-09 1983-04-05 Avco Corporation Brazing filler metal composition and process
FR2565250A1 (en) * 1984-06-05 1985-12-06 Cabot Corp CORROSION RESISTANT SILICON RICH ALLOY, METHOD OF COATING SUBSTRATE ARTICLE, AND ARTICLE OBTAINED THEREFROM
DE3929222A1 (en) * 1989-09-02 1991-03-07 Vacuumschmelze Gmbh Nickel based high temp. solder - contains molybdenum to raise soldering temp. or reduce metalloid content and improve corrosion resistance
DE19614838A1 (en) * 1996-04-16 1997-10-23 Bwt Wassertechnik Gmbh Ozone generator with improved corrosion resistance to aggressive cooling water
US20110014491A1 (en) * 2008-03-19 2011-01-20 Hoganas Ab (Publ) Iron-chromium based brazing filler metal
RU2550471C2 (en) * 2009-09-18 2015-05-10 Хеганес Аб Brazing filler on fe-cr base

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB583737A (en) * 1943-11-25 1946-12-30 British Thomson Houston Co Ltd Improvements in and relating to brazing alloys
FR926132A (en) * 1940-07-19 1947-09-23 Mond Nickel Co Ltd Alloys with good corrosion resistance and high creep resistance at elevated temperatures
GB633230A (en) * 1939-03-20 1949-12-12 American Platinum Works Improvements in or relating to silver solder alloys
US2521273A (en) * 1948-04-15 1950-09-05 Union Carbide & Carbon Corp Nickel base alloy

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB633230A (en) * 1939-03-20 1949-12-12 American Platinum Works Improvements in or relating to silver solder alloys
FR926132A (en) * 1940-07-19 1947-09-23 Mond Nickel Co Ltd Alloys with good corrosion resistance and high creep resistance at elevated temperatures
GB583737A (en) * 1943-11-25 1946-12-30 British Thomson Houston Co Ltd Improvements in and relating to brazing alloys
US2521273A (en) * 1948-04-15 1950-09-05 Union Carbide & Carbon Corp Nickel base alloy

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902617A (en) * 1955-12-12 1959-09-01 Gen Motors Corp Spark plug and method for making same
US3017532A (en) * 1956-02-27 1962-01-16 Gen Am Transport Electrical elements
US2864693A (en) * 1956-04-24 1958-12-16 Coast Metals Inc Brazing alloys
US2880086A (en) * 1957-03-06 1959-03-31 Coast Metals Inc Low melting point nickel-iron alloys
US3231971A (en) * 1961-01-19 1966-02-01 Inland Steel Co Method of producing fusion coated metal base
US3173783A (en) * 1962-07-16 1965-03-16 American Potash & Chem Corp Ternary alkali metal alloy
US3890145A (en) * 1969-10-28 1975-06-17 Onera (Off Nat Aerospatiale) Processes for the manufacture of tungsten-based alloys and in the corresponding materials
US4379121A (en) * 1981-07-09 1983-04-05 Avco Corporation Brazing filler metal composition and process
FR2565250A1 (en) * 1984-06-05 1985-12-06 Cabot Corp CORROSION RESISTANT SILICON RICH ALLOY, METHOD OF COATING SUBSTRATE ARTICLE, AND ARTICLE OBTAINED THEREFROM
DE3929222A1 (en) * 1989-09-02 1991-03-07 Vacuumschmelze Gmbh Nickel based high temp. solder - contains molybdenum to raise soldering temp. or reduce metalloid content and improve corrosion resistance
DE3929222C2 (en) * 1989-09-02 2003-03-20 Vacuumschmelze Gmbh Nickel-based solder foil for high-temperature solder connections
DE19614838A1 (en) * 1996-04-16 1997-10-23 Bwt Wassertechnik Gmbh Ozone generator with improved corrosion resistance to aggressive cooling water
US20110014491A1 (en) * 2008-03-19 2011-01-20 Hoganas Ab (Publ) Iron-chromium based brazing filler metal
US9193011B2 (en) * 2008-03-19 2015-11-24 Hoganas Ab (Publ) Iron-chromium based brazing filler metal
RU2550471C2 (en) * 2009-09-18 2015-05-10 Хеганес Аб Brazing filler on fe-cr base
US10384313B2 (en) * 2009-09-18 2019-08-20 Höganäs Ab (Publ) Iron-chromium based brazing filler metal

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