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BRAZING
THE BENEFITS OF BRAZING? Brazing is the joining of metals through the use of heat and a filler metal - a filler metal whose melting temperature is above 450°C but below the melting point of the metals being joined. Brazing is probably the most versatile method of metal joining today, for a number of reasons. Brazed joints are strong. On non-ferrous metals and steels, the tensile strength of a properly made joint will often exceed that of the metals joined. On stainless steel, it is possible to develop a joint whose tensile strength is 130,000 pounds per square inch (800 N/mm). Brazed joints are ductile, able to withstand considerable shock and vibration. Brazed joints are generally easy and rapid to make, and operator skill readily acquired.
BRONZE TYPE BRAZING ALLOYS FOR JOINING STEEL, CAST-IRON GALVANIZED STEEL
ATTENTION: when brazing with B (bare) rods use Flux 810 CU( F21)
| Product |
Application/Features |
Technical details |
Form of delivery |
842 BB
842 FB |
Multi purpose brazing rod. For strong joints and build-ups on copper, brass, bronze, steel, galvanized and cast iron. |
Melting range:875-900ºC
Tensile strength:350-400N/mm²
DIN EN 1044:CU 301 |
B (bare rods)2,0,3,0
F (flux coated) 2,5mm
Length 500 mm |
860 BB
860 FB |
Silver containing brazing alloy for joining steel, copper alloy and galvanized steel
Excellent bonding and flowing, high strength
Unique flux coating allows fast and easy brazing
|
Melting range:845-865ºC
Tensile strength:400-450 N/mm²
DIN EN 1044:
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B (bare rods)2,0,3,0
F (flux coated) 2,5mm
Length 500 mm
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865 BB
865 FB
|
Special nickel bronze alloy for high strength joining and build-ups. Use for overlaying and build-up of gear teeth, bearings, shafts, valve seats, wedge bars and steering knuckles, furniture and bicycle assemblies, attaching carbide cutting tips. |
Melting range:845-865ºC
Tensile strength:400-450 N/mm²
DIN EN 1044: CU 305
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B (bare rods)2,0,3,0
F (flux coated) 2,5mm
Length 500 mm
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Low Temperature Brazing Alloys
GENERAL INFORMATION ON GOLD SILVER BRAZING ALLOYS
Silver containing brazing alloys are not cheap but have the following advantages.
- Low brazing temperature lower distortion and minimum change to base metal
- Excellent wetting and bonding giving strong leak tight joints
- Easy to use, economical and versatile
- Joins a variety of metals such as steel, stainless steel, tungsten, cobalt, nickel
- Good corrosion resistance and food safe (CD free products)
- Gold silver alloys are available as bare (solid) rods or wire (B) in flux coated rods (F) and tubular wire with flux inside the wire (TBW)
CADMIUM FREE FOOD SAFE SILVER BRAZING ALLOYS
| Product |
Application/Features |
Technical details |
Form of delivery |
850 BB
850 FB
850 TBW |
Our most versatile brazing rod Safe to use, cadmium free silver brazing
alloy. High silver content (56 %) provides the best combination of low melting temperature, high strength and excellent capillary flow, good color match on stainless steel. Use on all ferrous and non-ferrous metals (not for white metals). Ideal for application in the food industry (dairies, breweries, bottling companies, hospitals, manufacturing of lamps, etc.)
|
Melting range:630-660 ºC
Tensile strength:430N/mm²
Elongation:>25 %
DIN EN 1044:
Analysis:Ag,Zn,Sn,Si,Cu
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B RODS.
1,5-2,0-2,5-3,0
F RODS
1,5 AND 2,0 mm
TBW WIRE(TUBULAR) |
| 5045 TBW |
A high silver content (45 %) low temperature brazing rod for joining steel, stainless steel, copper, nickel and tungsten alloys. Does not contain cadmium and can therefore be used on food or medical equipment. Tin free composition. Highest crack resistance. Good ability to fill joint gaps that cannot be tightly controlled. |
Melting range:640-680 ºC
Tensile strength:430N/mm²
Elongation:>25 %
DIN EN 1044:AG 104
Analysis:Ag, Zn, Sn, Si, Cu
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B RODS. 1,5-2,0-2,5-3,0
F RODS 1,5 AND 2,0 mm
TBW WIRE(TUBULAR)
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| 5034 TBW |
A general purpose economical silver brazing alloy for brazing copper brass, bronze and steels.
Especially suitable for maintenance and production brazing when joint gaps are more than 0.15 mm
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Melting range:640-730 ºC
Tensile strength:430N/mm²
Elongation:>25 %
DIN EN 1044: AG 106
Analysis:Ag,Zn,Sn,Si,Cu
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B RODS. 1,5-2,0-2,5-3,0
F RODS 1,5 AND 2,0 mm
TBW WIRE(TUBULAR) |
Low Temperature Brazing/Soldering Alloys
Brazing alloys for copper and dissimilar alloys
| Product GOLD |
Description |
Technical details |
Size (mm) |
845
2040TBW
(51) |
Multi purpose Silver Solder (with CD) for high strength joints at lowest temperature. Excellent for dissimilar combination (copper-brass-steel-stainless steel, tool steel). Provides joints with ex1cellent ductility:
quick flowing therefore this alloy needs well fitted joints with small gaps.
Ideal for brazing of small carbide tools. Recommended flux: this product is available as a bare wire/rod, flux coated rod or flux cored (tubular) wire.
Limitations: Contains cadmium therefore not suitable for food applications. |
Melting range:595-630 ºC
Tensile strength:480N/mm²
Elongation:>25 %
DIN EN 1044:AG 304
Analysis:Ag,Zn,Cd,Cu
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1.5
2.0 |
830
(96) |
Silver containing self fluxing brazing rod for copper and copper alloys. High strength and ductility, excellent vibration resistance. , good electrical conductivity. For use on air conditioning and refrigeration tubing, electric motor repairs. Radiators, heat exchangers bus bars etc.
May be used for operating temperatures up to 150 0 C. |
Melting range:630-660 ºC
Tensile strength:430N/mm²
Elongation:>25 %
DIN EN 1044:
Analysis:Ag, Cu, P
|
1.5
2.0
3.0 |
820
(90) |
Economy type copper phosphor alloy rod for copper.
Self fluxing on copper For use on air conditioning and refrigeration tubing, electric motor repairs. Radiators, heat exchangers bus bars etc.
May be used for operating temperatures up to 150 0 C
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Melting range:630-660 ºC
Tensile strength:430N/mm²
Elongation:>25 %
DIN EN 1044:
Analysis: Cu, P
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1.5
2.0
3.0 |
Low temperature joining (soldering) of different metals
| Product GOLD |
Description |
Technical details |
| 22 B |
A high strength solder that is free of cadmium, zinc and lead. The deposit stays bright and shiny, therefore it has a close color-match to stainless steel. Soldered joints have good corrosion resistance and can be plated.
Ideal for use on stainless steel, brass, bronze, copper, nickel alloys and carbon steels. Typical applications are food and dairy equipment, instruments, jeweler manufacturing, sanitary apparatus, electrical connections and general maintenance repairs. 22B is a bare wire and is to be used with flux 30 FL.
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Melting range:220-240 ºC
Tensile strength:~50 MPa
Elongation:>25 %
DIN EN 1044:
Analysis:,Sn,Ag
Sizes: 2 and 3 mm
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| 20 |
Strong medium temperature solder for joining aluminum and aluminum to other metals. Higher strength when compared to ordinary soft solder.
Do not use on food applications. Use with flux no. 40FL
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Melting range:180-260 ºC
Tensile strength:~50 MPa
Elongation:>25 %
DIN EN 1707: LCdZn 20
Sizes: 2 mm
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FLUXES FOR BRAZING AND SOLDERING
Flux plays a important part in brazing and soldering. Flux removes oxides during the brazing operation and promotes wetting (bonding) of the filler material.
Fluxes are generally supplied as a paste or a Powder. If supplied as powder the should be
mixed with distilled water to form a paste.
Limitation: Fluxes will only remove oxides other contaminants such us oil, rust etc must be removed by other means (degreasing…) before brazing.
Safety: Fluxes contain acids. do not inhale fumes wash hands with soap and water after Use. Observe safety datasheets remove flux residues after brazing from work piece.
| Product GOLD |
Description |
Technical details |
Packaging |
810 AG
(10 FL) |
PASTE silver solder flux. Provides maximum wetting and cleaning action on a variety of metals. Use with 850,845,840,5045 . silver solder and other low temp brazing rods |
Active range from 550 -800 °C
Composition: Boric, Acid, Borates, flu borates |
0.1 kg
0.25 kg
1.00 kg |
810 HT
(60 FL) |
High temperature flux for silver brazing of nickel base alloys, mild steels, austenitic and martensitic stainless steels, tungsten carbide.
Also recommended for induction brazing |
Active range from 550 -800 °C
Composition: Boric Acid, Borates, flu borates |
0.25 kg
1.00 kg
PA paste;
PD powder |
810 CU
(21 FL) |
General purpose brazing flux in paste form. Can be used with all kinds of brazing rods for brazing steel, cast-iron, brass, bronze. Active range from 800 0 C to 11000 C. |
Active range from 800 °C to 1100 °C.
Composition: Boric Acid, Borates, flu borates |
0.25 kg
1.00 kg |
| 40 FL |
Universal aluminum brazing flux. Has excellent wetting properties on all aluminum and Aluminum alloys. |
Temp. range 440 - 650 °C
Composition: Lithium chloride, Sodium chloride, Potassium chloride |
0.25 kg
1.00 kg |
| 30 FL |
Universal flux for soft soldering. Rapidly dissolves oxides. Can be used on all metals except aluminum. For use with all soft-solders on stainless steel, copper, silver, galvanized steel. |
Temp. range 200 - 300 °C |
0.25 kg
1.00 kg |
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