Sgj Welding Foil Strip in Vacuum Brazing Alloy Cumnni Copper Based Brazing Alloy

• Type: Copper Based Brazing Alloy
• Material: Copper / Copper Alloy
• Diameter: Customized
• Length: Customized
• Welding Core Type: Customized
• Electrode Coating Type: Customized
• Model NO.: Copper Based Brazing Alloy
• Slag Characteristic: Customized
• Stainless Steel Welding Rod Type: Customized
• Function: Surfacing Electrode, Low Hydrogen Type Electrode, Hardfacing Electrode, High Efficient Iron Powder Electrode, Gravity Electrode, Moisture-Proof Electrode, Customized
• Welding Power: Customized
• Transport Package: Individual Packing
• Specification: Non-Standard
• Trademark: SGJ
• Origin: China
• HS Code: 6914100000
• Production Capacity: 100000sets Per Year

Product Description

SGJ Welding Foil Strip in Vacuum Brazing  Alloy CuMnNi Copper Based Brazing Alloy 
 

Cu based brazing filler metal

Cu based brazing filler metal are composed of copper as the base and elements that can lower the melting point and improve its overall performance, such as P, Ag, Zn,Sn, Mn, Ni, Co, Ti, Si, B, Fe, etc., mainly pure copper, copper phosphorus, copper tin, copper zinc, copper manganese and other series. Cu based brazing filler metal are widely used in the brazing of copper and copper alloys, carbon steel and cast iron, stainless steel, high-temperature alloys, cemented carbide, etc., with good electrical conductivity, thermal conductivity, and better strength and corrosion resistance, etc.

 

Common grades:BCu-1,CuSn15.6P5.2Ni4.2,CuSnTi
Typical Grades

GB/AWS/ISO	Chemical composition (wt%)	Range of melting temperature (ºC)	Minimum brazing temperature (ºC)
BCu100/BCu-1	Cu≥99.9	1083	1093-1149
CuSn10	Sn9-11/Cu BAL.	840-1000	1020-1090
CuSn19Ti10	Sn18-20/Ti9-11/Cu BAL.	850-880	880-930
BCuP-2/BCu92P	P7.0-8.1/Cu BAL.	710-770	720-843
CuSn3P7	P6-8/Sn2-4/Cu BAL.	630-670	710-810
BCuP-9/BCu86SnP	P6-7/Sn6-7/Cu BAL.	650-700	700-810
BCuP-8/BCu76AgP	Ag17.2-18/P6-6.7/Cu BAL.	643-666	670-686
BCu86SnPNi	P4.8-6.5/Sn7-8/Ni0.5-1.5/Cu BAL.	612-682	682-812
CuSn15.6PNi4.2	P5.2/Sn15.6/Ni4.2/Cu BAL.	585-605	605-800
Cu595/BCu84NiMn	Mn11-13/Ni2-4/Cu BAL.	970-990	1000-1050
CuMn38Ni10	Mn37-39/Ni9-11/Cu BAL.	900-950	950-1070
BCuMnCo	Mn9-11/Co2-4/Cu BAL.	980-1030	1050-1100
BCu54Zn	Cu53-55/Zn BAL.	885-888	910-955
Cu773/BCu48ZnNi	Cu46-50/Ni9-11/Zn BAL.	890-920	938-982
Cu55ZnNiMn	Cu54-56/Ni6-8/Mn4-6/Zn BAL.	910-933	940-1040

 

Nickel-based filler metal

Nickel-based filler metal are composed of nickel as the base with the addition of elements that can lower the melting point and increase its thermal strength, such as chromium, boron, silicon and phosphorus, etc. The main series are nickel-chromium-silicon boron, nickel-silicon boron, nickel-chromium-silicon,nickel-phosphorus, nickel-chromium-phosphorus, etc. Nickel-based filler metal are widely used in the brazing of stainless steel, high-temperature alloys, iron-based alloys, Fe-Ni-based alloys, diamond, cemented carbide, C/C composites, etc. They have excellent resistance to high temperature, corrosion, excellent mechanical properties, etc.

 

Common grades:BNi-2(BNi82CrSiBFe),BNi-7(BNi76CrP)

 

Typical Grades

GB/AWS/ISO	Chemical composition (wt%)	Range of melting temperature (ºC)	Minimum brazing temperature (ºC)
BNi73CrFeSiB(c)/BNi-1	Cr13-15/Si4-5/Fe4-5/B2.75- 3.5/C0.6-0.9/Ni BAL.	980-1060	1066-1204
BNi74CrFeSiB/BNi-1a	Cr13-15/Si4-5/Fe4-5/B2.75-3.5/C0.06/Ni BAL.	980-1070	1077-1204
BNi82CrSiBFe/BNi-2	Cr6-8/Si4-5/Fe2.5-3.5/B2.75-3.5/Ni BAL.	970-1000	1010-1177
BNi92SiB/BNi-3	Si2.75-3.5/B4.0-5.0/Ni BAL.	980-1040	1010-1177
BNi95SiB/BNi-4	Si3-4/B1.5-2.2/Fe≤1.5/Ni BAL.	980-1070	1010-1177
BNi71CrSi/BNi-5	Cr18.5-19.5/Si9.75-10.5/Ni BAL.	1080-1135	1149-1204
BNi-5x	Cr28.5-29.5/Si3.5-4.5/P5.5-6.5/Ni BAL.	965-1035	1050-1125
BNi89P/BNi-6	P10-12/Ni BAL.	875	927-1093
BNi76CrP/BNi-7	Cr13-15/P9.7-10.5/Ni BAL.	890	927-1093
BCo-1	Ni16-18/Cr18-20/Si7.5-8.5/ W3.5-4.5/B0.7-0.9/C0.35-0.45/Co BAL.	1121-1149	1149-1232

 

Silver filler metal

Silver filler metal is an alloy brazing material based on silver or silver-based solid solution. It has the characteristics of low melting point, good wettability and caulking performance, excellent strength, plasticity, electrical conductivity, corrosion resistance, etc. It can be used to braze almost all ferrous and non-ferrous metals except aluminum, magnesium and other low melting point metals, and has excellent wettability for diamond, graphite and carbon, cubic boron nitride ceramic materials, etc. after adding active elements, so it is widely used. In order to improve the process performance or economy and environmental protection of brazing materials, such as lowering the melting point, improving wettability, reducing the silver content, etc., zinc, tin, nickel, cadmium, indium and titanium alloy elements are usually added to the brazing materials to form ternary or multi-alloys.

 

Common grades:BAg-36,BAg-8(BAg72Cu),Ag43.6CuInTi

 

Typical Grades

GB/AWS/ISO	Chemical composition (wt%)	Range of melting temperature (ºC)	Minimum brazing temperature (ºC)
BAg100/BVAg-0	Ag≥99.95	961	961-1038
BAg72Cu/BAg-8	Ag71-73/Cu BAL.	779	779-899
BAg92Cu	Ag91-93/Cu BAL.	779-872	871-982
BAg45CuZnSn/BAg-36	Ag44-46/Cu26-28/Zn23-2 7/Sn2.5-3.5	646-677	677-813
BAg56CuZnSn/BAg-7	Ag55-57/Cu21-23/Zn15-1 9/Sn4.5-5.5	618-652	652-760
BAg25CuZnSn/BAg-37	Ag24-26/Cu39-41/Zn31-3 5/Sn1.5-2.5	688-779	779-885
BAg50ZnCuNi/BAg-24	Ag49-51/Cu19-21/Zn26-3 0/Ni1.5-2.5	660-707	707-843
Ag43.6CuInTi	Ag43.6-Cu29.1-In24.3-Ti 3	540-650	680-800
AgCuTi4.5	Ag68.7-70.7/Ti4-5/Cu BAL.	770-810	830-930
AgCuTi2	Ag68.7-70.7/Ti1.5-2.5/Cu BAL.	780-805	825-927
AgCuTi3.3	Ag68.7-70.7/Ti2.8-3.8/Cu BAL.	780-810	850-930

OFHC (Oxygen-Free High Thermal Conductivity) Copper is the highest purity grade of copper, about 99.99%. Often used as a conductor of electricity.
CTU1 is one of them, which has better forming, resistance to hydrogen embrittlement, and brazing characteristics than C110 ETP. CTU1/C102 has good solderability and corrosion resistance and is used for high current applications.  It also has another characteristic, that is, after special treatment can be welded with ceramic.
High Conductivity (OFHC) Copper characteristics are high ductility, high electrical and thermal conductivity, high impact strength, good creep resistance, ease of welding, and low volatility under high vacuum. Electrical: Electrical Conductors, Klystrons, Microwave Tubes, Transistor Components, Lead In Wire, Coaxial Cables, Copper to Glass Seals in Electronic Appliances, Busbars, Bus Conductors, Wave Guides. Industrial: Tubing, LP Gas Service, Tubing, Medical Gas- Oxygen, Vacuum Seals, Coaxial Tube, Billet Mold Tube, Extrusion Cans for Powder Metallurgy

Brazing Al2O3 ceramics and non-oxygen copper with Ag(72)-Cu(28) brazing filler materials added element Ti, we can get high quality brazed joints, and the highest sealing strength can be up to 103 Mpa
The compound line of fixed expansion to high conduction of electricity and high conduction of heat is a kind of compound sealing material that is made of alloy Fe-Ni or Fe-Ni-Co or Fe-Cr and oxygen-free copper.

Item	Parts	Materials	Note
A	Ceramic Tube	96% alumina	Ends metalizing thin layer of Molybdenum
B	Metal Adapter	Kovar 4J33	JIS Code KV-4(Ni33Co17)
C	Electrode	OFHC Copper	Oxygen Free High CondCodeuctivity Copper
D	Weld Lip	Kovar 4J33	JIS Code KV-4(Ni33Co17)
X	Brazing Area	Silver+Copper Eutectic Alloy	Complete vacuum brazing

SGJ Ceramic Metal Seal Assemblies Electrode/ Insert/ Conductor/ Insert/ Connecter Vacuum Feedthrough

Designed Water Cooled Feed Through by SGJ-International (Shaanxi Sgj International Co., Ltd.)

Code	Parts	Materials	Note
A	SS Adapter	SS 304	Stainless Steel 304 Coated with Nickel
B	Sleeve	Kovar 4J33	JIS Code KV-4(Ni33Co17)
C	Ceramic Tube	96% alumina	Ends metalizing thin layer of  Molybdenum
D	Cap	Kovar 4J33	JIS Code KV-4(Ni33Co17)
E	Electrode	OFHC Copper	Oxygen Free High Conductivity Copper
X	Brazing Area	Silver+Copper Eutectic Alloy	Complete vacuum brazing

Electrical isolators, consist of metal sleeves brazed to each end of an insulating ceramic tube. They are used to introduce cryogenic fluids into a system and to provide electrical isolation of line components. Vacuum isolators are used to provide an electrical break between the vacuum system and other external components.

 

SGJ isolators typically are made from high-purity alumina ceramics and Metals. The metal hardware is generally a controlled-expansion Kovar 4J33, SUS 304 or OFHC Copper TU1. All materials and braze alloys used are chosen for their specific characteristics and ability to maintain the integrity of the seals for use in demanding applications and environments. The assemblies are brazed together with Silver Copper Eutectic Alloy.

Designed Electrical Isolator by SGJ-International (Shaanxi Sgj International Co., Ltd.)



Kovar Alloy 4J33:
Kovar is a Nickel-Iron-Cobalt, controlled expansion alloy. It's expansion characteristics match alumina ceramics. This alone ensures it is a highly popular controlled expansion alloys for hermetic sealing applications (Mainly used in Ceramic Metal Seal Assemblies)

OFHC Copper TU1:
CTU1/C102 is an oxygen-free copper which has better forming, resistance to hydrogen embrittlement, and brazing characteristics than C110 ETP. CTU1/C102 has good solderability and corrosion resistance and is used for high current applications.

Stainless Steel SUS 304L:
SUS 304L Stainless Steel famous for its resistivity, fall under the category of Stainless Steel Tubes. Threaded, Hot Rolled, Cold Rolled, Heat Exchangers, Annealed, Pickled....  All these products belonging to the SUS 304L Tubes catalog serve as the prime building blocks of electrochemical, shipping, construction and gas industries.

Metallized Alumina Ceramic:
Vacuum brazing of ceramic and metal requires metal coating in the welding area of ceramic. It ensures good air tightness of metal and alumina metallized ceramic brazing joint in vacuum environment. We SGJ have our own unique patented solder formula to ensure the stability and reliability of our products...
 The key of Ceramic-Metal structure based on the vacuum tightness, so called sealing. And , Metallized ceramic bonding area Via vacuum brazing technology is the only solution

Alumina Manufacturing Description:
Alumina Ceramics can be produced in a wide range of purities with additives designed to enhance its properties. Typical purities range from 85 to 99.7% although Precision Ceramics generally work over 99.7% material.

It can be injection molded, die pressed, isostatically pressed, slip cast and extruded. Once fired and sintered, it can only be machined using diamondgrinding methods but prior to sintering advanced green and biscuit machining techniques developed by Precision Ceramics allow more complex components to be manufactured using traditional machining methods. In addition Alumina can be readily joined to metals or other ceramics using metallising and brazing techniques.

Alumina can be machined in green, biscuit, or fully dense states. While in the green or biscuit form it can be machined relatively easily into complex geometries. However, the sintering process that is required to fully densify the material causes the alumiuna body to shrink approximately 20%. This shrinkage means that it is impossible to hold very tight tolerances when machining alumina pre-sintering. In order to achieve very tight tolerances, fully sintered material must be machined/ground with diamond tools. In this process a very precise diamond coated tool/wheel is used to abrade away the material until the desired form is created. Due to the inherit toughness and hardness of the material, this can be a time consuming and costly process.

Precision Ceramics specialises in tight tolerance, highly complex work and has extensive in-house machining facilities - including 4th & 5th axis machining centres, drilling, grinding, milling, polishing, sawing, tapping, threading and turning - to enable us to manufacture Alumina components to the highest specifications.

Precision Ceramics is your Alumina machining specialist for your technical ceramic prototyping & manufacturing needs; we are always happy to use our many years of advanced ceramics experience to provide advice on materials, design, and application. If you would like to buy Alumina plates, rods, tubes or custom machined components, please contact SGJ for more details.

Alumina Electrical Ceramics
Alumina electrical ceramics have low dielectric constant, low dielectric loss, high insulation strength, high volume resistivity, good bending strength, high stability, high compressive strength and good cold and hot shock resistance. It is widely used in temperature controller, insulation parts, thermal equipment, electric heating equipment, iron structure building, shipbuilding and so on. Alumina is the most cost effective and widely used material in the family of engineering ceramics. Extremely High Purity, Temperature & Strength; Excellent Corrosion, High Strength, Wear Resistant, Electronic Insulating, Structural & Metalizing, Porous, Easily Degassed & Machinable. The raw materials from which this high-performance technical grade ceramic is made are readily available and reasonably priced, resulting in good value for the cost in fabricated alumina shapes.
Glazed Alumina Ceramics is a kind of material based on alumina, which is used in thick film integrated circuits. Alumina ceramics have good conductivity, mechanical strength and high temperature resistance. Alumina ceramics are widely used. Because of its superior performance, it has been widely used in modern society to meet the needs of daily use and special performance.

SGJ 96% alumina is an easily metallisable ceramic composition:

This material SGJ 96% alumina material is an excellent electrical insulator that can be metallised to facilitate high-temperature brazing of assemblies. This material features:

• Very high volume resistivity
• Low loss, constant high dielectric
• High density, non-porous and vacuum tight
• Resists abrasive wear and chemical attack

The fact that this material can be metallised makes this a good choice for many ceramic to metal or brazed assemblies such as high-vacuum systems, laser equipment (gas, solid-state and waveguide), X-ray tubes and electron microscopes, microwave windows and insulators in medical and scientific equipment.

SGJ 96% Alumina Ceramic Data Sheet:

 

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