US2161057A - Brazing alloy - Google Patents
Brazing alloy Download PDFInfo
- Publication number
- US2161057A US2161057A US265228A US26522839A US2161057A US 2161057 A US2161057 A US 2161057A US 265228 A US265228 A US 265228A US 26522839 A US26522839 A US 26522839A US 2161057 A US2161057 A US 2161057A
- Authority
- US
- United States
- Prior art keywords
- alloy
- antimony
- phosphorus
- copper
- alloys
- 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
Links
Classifications
-
- 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
- B23K35/302—Cu as the principal constituent
Definitions
- An object of this invention is to provide a copper phosphorus brazing alloy having improved characteristics.
- a more specific object of this invention is to provide a brazing alloy of copper, phosphorus and antimony having a low flow point, ductility as fused and the ability to adhere to non-ferrous metals and alloys.
- the alloy of this invention comprises antimony in an-amount varying approximately from .l%
- the alloying elements are present in an amount ranging from 4 to 8% of phosphorus and from .5% to 4% of antimony with the balance substantially all copper.
- this brazing alloy In producing this brazing alloy, it is found that the antimony addition is very effective in lowering the flow point of the alloy without detri- 40 mentally affecting its ductility. In a number of cases it is found that the alloys whose contents fall within the ranges given hereinbefore where antimony is employed in place of the part of the phosphorus of the alloy, have a greater ductility than corresponding alloys which have a phosphorus content equal to the antimony plus phosphorus content of the alloy of this invention.
- the phosphorus plus antimony content is from 7% to 8% with the antimony present in amounts from .5 up to 4%, the resulting alloy having a low flow point, high ductility and extremely good selffluxing characteristics.
- the term flow point means the lowest temperature at which the alloy is completely fluid and as applied to the alloys of this invention, is also the melting point of the alloys, it being found that they have a very sharp melting point, so the individual alloys having no melting range.
- the alloy; identified in the table as No. 13 is of unusual value having a flow int below 700 C.
- the copper-phosphorus-antimony alloys of this 40 invention may be prepared by process anal- O ous to those known to the art for the manufacture of other alloys. Thus a melt of copper and phosphorous having the desired-phosphorus content may be made to which the antimony in the correct proportions may be added or the antimony and copper may be. melted together, after which the phosphorus may be added in the correct proportions.
- the resulting alloy can be cast, and fabricated to a desired shape'or form, 50 or may be prepared for use as a powdered alloy. Whether employed in the solid form or in the powdered form, strong, dense and ductile welds are formed with non-ferrous metals and without any fluxing agent, since the resulting alloy has .2.
- a M oy
- a brazing alloy composed of about 6% of phosphorus, about 2% of antimony and about 92% of copper,
- a brazing alloy consisting of 6% to 7.5% of phosphorus, .5% to 2% of antimony, the combined phosphorus and antimony content ranging between 7% and 8%, and the balance substantially all copper.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Description
Patented June 6, 1939 UNITED STATES PATENT OFFICE BRAZING ALLOY Philip R. Kalischer, Wilkinsburg, Pa., assignor to Westinghouse Electric & Manufacturing Company, East Pittsburgh, Pa., a corporation of Pennsylvania No Drawing. Application March 31, 1939,
Serial No. 265,228
' 4 Claims. (01. 75-153) tile as applied or as fused in a joint, the ductility preferably approaching that of the well known 50% silver solders. Further, the alloy should have the characteristics of wetting metal parts without i the use of a flux and of adhering to ferrous and non-ferrous metals.
An object of this invention is to provide a copper phosphorus brazing alloy having improved characteristics.
- A more specific object of this invention is to provide a brazing alloy of copper, phosphorus and antimony having a low flow point, ductility as fused and the ability to adhere to non-ferrous metals and alloys. I 1' Other objects of this invention will be apparent from the following description and the appended claims.
The alloy of this invention comprises antimony in an-amount varying approximately from .l%
to 6%, phosphorus varying approximately from 4% to 10% and the balance substantially all copper. In a preferred embodiment of the invention, 'the alloying elements are present in an amount ranging from 4 to 8% of phosphorus and from .5% to 4% of antimony with the balance substantially all copper.
In producing this brazing alloy, it is found that the antimony addition is very effective in lowering the flow point of the alloy without detri- 40 mentally affecting its ductility. In a number of cases it is found that the alloys whose contents fall within the ranges given hereinbefore where antimony is employed in place of the part of the phosphorus of the alloy, have a greater ductility than corresponding alloys which have a phosphorus content equal to the antimony plus phosphorus content of the alloy of this invention.
As illustrative of theafl'ect of antimony additions on the flow point of the resulting copperphosphorus-antimony alloy, reference may be had to the following table from which it is apparent that the antimony inclusions, both as additions to copper and phosphorus and as substitutions for part of the phosphorus content of while having a ductility far such alloys, have a definite eifect in reducing the flow point of the resulting alloy.
Alloy No Pegcbpnt Pcrroent Pecltlant Flovgsoint, 5
The relationship given in the table has been found over a wide range of alloy compositions where the antimony plus phosphorus content in the copper base is from 5% to 10% of the whole.
In practice, it is found that the best combination of characteristics of the alloy is obtained where the phosphorus plus antimony content is from 7% to 8% with the antimony present in amounts from .5 up to 4%, the resulting alloy having a low flow point, high ductility and extremely good selffluxing characteristics. As employed in this description, the term flow point means the lowest temperature at which the alloy is completely fluid and as applied to the alloys of this invention, is also the melting point of the alloys, it being found that they have a very sharp melting point, so the individual alloys having no melting range. The alloy; identified in the table as No. 13 is of unusual value having a flow int below 700 C.
eater, as determined by bending a brazing joint, than the ductility obtained with a copper base alloy containing only 7% of phosphorus. In addition, this alloy adheres well to non-ferrous metals, no flux being necessary.
The copper-phosphorus-antimony alloys of this 40 invention may be prepared by process anal- O ous to those known to the art for the manufacture of other alloys. Thus a melt of copper and phosphorous having the desired-phosphorus content may be made to which the antimony in the correct proportions may be added or the antimony and copper may be. melted together, after which the phosphorus may be added in the correct proportions. The resulting alloy can be cast, and fabricated to a desired shape'or form, 50 or may be prepared for use as a powdered alloy. Whether employed in the solid form or in the powdered form, strong, dense and ductile welds are formed with non-ferrous metals and without any fluxing agent, since the resulting alloy has .2. A M: oy
of phosphorus and from .5% to 4% of antimony with the balance substantially all copper.
3. A brazing alloy composed of about 6% of phosphorus, about 2% of antimony and about 92% of copper,
4. A brazing alloy consisting of 6% to 7.5% of phosphorus, .5% to 2% of antimony, the combined phosphorus and antimony content ranging between 7% and 8%, and the balance substantially all copper.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US265228A US2161057A (en) | 1939-03-31 | 1939-03-31 | Brazing alloy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US265228A US2161057A (en) | 1939-03-31 | 1939-03-31 | Brazing alloy |
Publications (1)
Publication Number | Publication Date |
---|---|
US2161057A true US2161057A (en) | 1939-06-06 |
Family
ID=23009567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US265228A Expired - Lifetime US2161057A (en) | 1939-03-31 | 1939-03-31 | Brazing alloy |
Country Status (1)
Country | Link |
---|---|
US (1) | US2161057A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5066456A (en) * | 1990-08-10 | 1991-11-19 | J. W. Harris Co., Inc. | Phosphorous copper based alloy with tin and antimony |
US20030024969A1 (en) * | 2001-07-25 | 2003-02-06 | Harris Joseph W. | Phosphorus-copper base brazing alloy |
US20050249629A1 (en) * | 2002-08-23 | 2005-11-10 | J.W. Harris Co., Inc. | Phosphorous-copper base brazing alloy |
-
1939
- 1939-03-31 US US265228A patent/US2161057A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5066456A (en) * | 1990-08-10 | 1991-11-19 | J. W. Harris Co., Inc. | Phosphorous copper based alloy with tin and antimony |
US20030024969A1 (en) * | 2001-07-25 | 2003-02-06 | Harris Joseph W. | Phosphorus-copper base brazing alloy |
US20050249629A1 (en) * | 2002-08-23 | 2005-11-10 | J.W. Harris Co., Inc. | Phosphorous-copper base brazing alloy |
US20110011920A1 (en) * | 2002-08-23 | 2011-01-20 | J.W. Harris Co., Inc. | Phosphorus-copper base brazing alloy |
US9533379B2 (en) * | 2002-08-23 | 2017-01-03 | Lincoln Global, Inc. | Phosphorous-copper base brazing alloy |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4684052A (en) | Method of brazing carbide using copper-zinc-manganese-nickel alloys | |
JP5544392B2 (en) | Copper-phosphorus-strontium brazing alloy | |
US3198609A (en) | Brazed structure and method of brazing | |
EP0222004B1 (en) | Copper-zinc-manganese-nickel alloys | |
US2161057A (en) | Brazing alloy | |
CN104339099A (en) | Medium-temperature solder containing copper and copper alloy | |
US1829903A (en) | Alloy | |
US3684496A (en) | Solder having improved strength at high temperatures | |
US2554233A (en) | Brazing alloys | |
CN105834613A (en) | Solder special for high-frequency soldering of four-way valve | |
US1921417A (en) | Alloy | |
US3607252A (en) | Solder alloy composition | |
CN105965175A (en) | Low-silver brazing filler metal used for high-frequency brazing of four-way valve | |
US2162627A (en) | Alloy | |
US3356494A (en) | Fluxless aluminum brazing alloys | |
US3528807A (en) | Copper brazing alloy | |
US3450527A (en) | Welding alloy | |
US1904389A (en) | Brazing solder | |
US1736654A (en) | Hard solder particularly for grey pig iron, cast steel, iron and the like | |
US20220371116A1 (en) | Low melting nickel-manganese-silicon based braze filler metals for heat exchanger applications | |
EP0100832B1 (en) | Brazing method and alloy for bismuth steel | |
SU882086A1 (en) | Tubular solder composition for soldering copper and alloys | |
CN107931883A (en) | A kind of solder alloy and preparation method thereof | |
US1724818A (en) | Brazing alloy | |
US1904360A (en) | Brazing solder |