20 Best Brazing Flux [2024]

Are you looking for the best brazing flux? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling brazing flux.

We Recommended:

# Preview Product
1 Harris SSWF1 Stay Silv Brazing Flux, 1 lb. Jar, White Harris SSWF1 Stay Silv Brazing Flux, 1 lb. Jar, White
2 Hot Max 24000 Brazing Flux Powder, 8-Ounce Hot Max 24000 Brazing Flux Powder, 8-Ounce
3 Harris SSWF1/4 Stay Silv Brazing Flux, 1/4 lb. Jar, White Harris SSWF1/4 Stay Silv Brazing Flux, 1/4 lb. Jar, White
4 Forney 37250 Brazing Flux, 8-Ounce Tub Forney 37250 Brazing Flux, 8-Ounce Tub
5 Hobart 770119 Welding Flux Brazing 1/2 Lb Can Hobart 770119 Welding Flux Brazing 1/2 Lb Can
6 Harris SSBF1 Stay Silv Brazing Flux, 1 lb. Jar, Black Harris SSBF1 Stay Silv Brazing Flux, 1 lb. Jar, Black
7 GSParts Harris Stay-Silv Silver White Brazing Flux Paste for Hi Temperature, SSWF7 GSParts Harris Stay-Silv Silver White Brazing Flux Paste for Hi Temperature, SSWF7
8 Harris ECDF1/2 Al-Braze EC Powder Flux,1/2 lb. Jar Harris ECDF1/2 Al-Braze EC Powder Flux,1/2 lb. Jar
9 HARRIS SSWF5 Stay Silv Brazing Flux, 5 lb. Jar, White HARRIS SSWF5 Stay Silv Brazing Flux, 5 lb. Jar, White
10 Bernzomatic WB5 Bronze Flux Coated Brazing/Welding Rod, 4Piece Bernzomatic WB5 Bronze Flux Coated Brazing/Welding Rod, 4Piece
11 Simple Welding Rods USA Made - From Simple Solution Now - Aluminum Brazing/Welding Rods - Make Your... Simple Welding Rods USA Made - From Simple Solution Now - Aluminum Brazing/Welding Rods - Make...
12 Handy Flux - 7 oz Jar w/Brush General Purpose Jewelry Making Metal Brazing Soldering Flux Handy Flux - 7 oz Jar w/Brush General Purpose Jewelry Making Metal Brazing Soldering Flux
13 Harris Solder Kit 5631 & SSWF7 - Safety-Silv 56% 1/16 Solder 1 Ounce w/Flux Harris Solder Kit 5631 & SSWF7 - Safety-Silv 56% 1/16 Solder 1 Ounce w/Flux
14 US Forge Welding Gas Welding Rods Flux Coated Low Fuming Bronze Brazing Rod 1/8-Inch by 18-Inch... US Forge Welding Gas Welding Rods Flux Coated Low Fuming Bronze Brazing Rod 1/8-Inch by 18-Inch...
15 Forney 48490 Flux Coated Bronze Brazing Rod, 3/32-Inch-by-18-Inch, 10-Rods Forney 48490 Flux Coated Bronze Brazing Rod, 3/32-Inch-by-18-Inch, 10-Rods
16 Hot Max 24184 Aluminum Brazing Flux for Welding Hot Max 24184 Aluminum Brazing Flux for Welding
17 Aufhauser SilverAlloy 45% Ag BAg-5 18' Flux Coated Silver Solder Brazing Rods 3 Sticks Aufhauser SilverAlloy 45% Ag BAg-5 18" Flux Coated Silver Solder Brazing Rods 3 Sticks
18 Weldcote Metals Anti-Borax Brazing Flux 1Lb. Weldcote Metals Anti-Borax Brazing Flux 1Lb.
19 Blue Demon BDTP-125-01T Triple Play Low Temp Aluminum-Zinc Brazing Rod 1/8' x 18' 1 Lb Tube, Blue Demon BDTP-125-01T Triple Play Low Temp Aluminum-Zinc Brazing Rod 1/8" x 18" 1 Lb Tube,
20 Handy Flux - 1 Lb Jar General Purpose Jewelry Making Metal Brazing Soldering Flux Handy Flux - 1 Lb Jar General Purpose Jewelry Making Metal Brazing Soldering Flux
SaleBestseller No. 1
Harris SSWF1 Stay Silv Brazing Flux, 1 lb. Jar, White
  • Active range 1050°F - 1600°F
  • Model Number: SSWF1
  • Item Package Dimension: 4.75" L x 4.75" W x 3.38" H
  • Item Package Weight: 1.08 lb
Bestseller No. 2
Hot Max 24000 Brazing Flux Powder, 8-Ounce
  • For all types of steel, malleable and cast iron, galvanized metals, brass, and bronze
  • This flux is used for flame brazing with either an oxy-acetylene or electric carbon arc torch
  • Active Temperature Range: 1400 to 2200 F (760 to 1205 C)
  • Meets AWS A5.31-91 Type FB3J Standards as well as MIL-F-16136B, Types A and B Standards
  • Brazing Flux Powder comes in 8-Ounce container, Made in the USA
SaleBestseller No. 3
Harris SSWF1/4 Stay Silv Brazing Flux, 1/4 lb. Jar, White
  • Active range 1050°F - 1600°F
  • Model Number: SSWF1/4
  • Item Package Dimension: 2.38" L x 2.38" W x 2.25" H
  • Item Package Weight: 0.27 lb
SaleBestseller No. 4
Forney 37250 Brazing Flux, 8-Ounce Tub
  • This are easy to use
  • This are highly durable
  • This is manufactured in United States
  • Click on the (BY FORNEY) name above in blue under the title to view our full catalog of Welders, Abrasives, Chain/Wire Rope, Tools and more!
Bestseller No. 5
Hobart 770119 Welding Flux Brazing 1/2 Lb Can
  • Country Of Origin: United States
  • Model Number: 770119
  • Item Package Dimension: 3.6" L x 3.5" W x 2.7" H
  • Item Package Weight: 0.7 lb
Bestseller No. 6
Harris SSBF1 Stay Silv Brazing Flux, 1 lb. Jar, Black
  • Active range 1050°F - 1800°F
  • 1lb Jar
  • Made in USA
  • material type: Zinc Chloride/Ethylene Glycol/Ammonium Chloride
Bestseller No. 8
Harris ECDF1/2 Al-Braze EC Powder Flux,1/2 lb. Jar
  • Nonflammable
  • 1/2lb Jar
  • Brazing Flux
  • Item Weight: 6.7 ounces
SaleBestseller No. 9
HARRIS SSWF5 Stay Silv Brazing Flux, 5 lb. Jar, White
  • Package Dimensions: 17.272 H x 12.192 L x 12.192 W (centimetres)
  • Package Weight: 2.336 kilograms
  • Country of Origin : Mexico
  • Unit count: 1.0
Bestseller No. 10
Bernzomatic WB5 Bronze Flux Coated Brazing/Welding Rod, 4Piece
  • Bronze flux coated brazing/welding rods ideal for everyday repairing of steels, cast iron
  • Contains 12-inch rods
  • Tensile strength: 60, 000 PSI
  • Working temp: 1, 620-degree Fahrenheit
SaleBestseller No. 11
Simple Welding Rods USA Made - From Simple Solution Now - Aluminum Brazing/Welding Rods - Make Your...
  • Superior Performance - Much lower working temperature than the vast majority of comparable products (728 deg F / 387 deg C) lets you repair &...
  • Gets the job done - No need for expensive training or equipment provides you the ability to use this easily whether your a novice or a pro - Easily.
  • Dependable - Make clean joints with no slag enables you to create a strong quality finish on all projects just like the pros do. No-Nonsense, 39,000...
  • No Flux - Works with aluminum, aluminum alloy, die-cast, bronze, nickel, titanium, zinc, copper, brass & most non-ferrous (non-magnetic) metals (does...
  • Usa Made - Simple Welding Rods are for every metalwork enthusiast who needs to repair or fabricate non-ferrous metal, but can't find a simple solution...
Bestseller No. 12
Handy Flux - 7 oz Jar w/Brush General Purpose Jewelry Making Metal Brazing Soldering Flux
  • Handy Flux is a very durable and powerful general purpose flux that protects your parts up to 1600°F (870°C)
  • It is an active fluoride-type flux which is appropriate for all nonferrous metals
  • It begins to melt and dissolve oxides at 600°F (320°C)
Bestseller No. 13
Harris Solder Kit 5631 & SSWF7 - Safety-Silv 56% 1/16 Solder 1 Ounce w/Flux
  • 6.5 oz Flux
  • 1 Troy Once (31 g) Solder
  • 56% Silver
  • 20% Copper, 17% Zinc, 5% Tin
  • Cadmium free
Bestseller No. 14
US Forge Welding Gas Welding Rods Flux Coated Low Fuming Bronze Brazing Rod 1/8-Inch by 18-Inch...
  • For general purpose brazing rod for repair of most ferrous and or non-ferrous metals
  • For use with oxy-acetylene torch only
  • No flux required
  • For use with lawn equipment, sheet metal, tanks
Bestseller No. 15
Forney 48490 Flux Coated Bronze Brazing Rod, 3/32-Inch-by-18-Inch, 10-Rods
  • The product is 3/32 18"brz Brazil rod
  • Easy to use
  • The product is manufactured in China
  • Fluxed low fuming bronze brazing rod is a high quality, low fuming bronze brazing rod with flux
  • Formulated for high tensile strength and ductility
Bestseller No. 16
Hot Max 24184 Aluminum Brazing Flux for Welding
  • Formulated specifically for torch brazing aluminum
  • Normally used with 4047, 4043, or 1100 brazing filler alloy
  • Can also be used for furnace and automatic flame brazing operations
  • Contains zinc chloride
  • Made in USA
Bestseller No. 17
Aufhauser SilverAlloy 45% Ag BAg-5 18" Flux Coated Silver Solder Brazing Rods 3 Sticks
  • Fluxed coated Cadmium-free 45% Silver brazing rods. 1/16" Core (3 Sticks)
  • For general purpose brazing of ferrous and non-ferrous alloys excluding aluminum.
  • For joining and repairing of Copper, Brass, Steel, Stainless Steel and Cast Iron.
  • Meets AWS A5.8 BAg-5, QQ-B-654A BAg-5.
  • Made in USA. DFARS Compliant.
SaleBestseller No. 19
Blue Demon BDTP-125-01T Triple Play Low Temp Aluminum-Zinc Brazing Rod 1/8" x 18" 1 Lb Tube,
  • One rod, 3 applications. Simple to use with only a propane torch.
  • Approximately 22 sticks per tube
  • Stronger than aluminum, harder than mild steel, excellent corrosion resistance
  • No flux required. Welds zinc base metals, Brazed aluminum
Bestseller No. 20
Handy Flux - 1 Lb Jar General Purpose Jewelry Making Metal Brazing Soldering Flux
  • Handy Flux is a very durable and powerful general purpose flux that protects your parts up to 1600°F (870°C)
  • It is an active fluoride-type flux which is appropriate for all nonferrous metals
  • It begins to melt and dissolve oxides at 600°F (320°C)

Having trouble finding a great brazing flux?

This problem is well understood by us because we have gone through the entire brazing flux research process ourselves, which is why we have put together a comprehensive list of the best brazing fluxs available in the market today.

After hours of searching and using all the models on the market, we have found the best brazing flux for 2023. See our ranking below!

How Do You Buy The Best Brazing Flux?

Do you get stressed out thinking about shopping for a great brazing flux? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching brazing flux, which is why we have assembled a comprehensive list of the greatest brazing flux available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for brazing flux that you consider buying. Your questions might include the following:

  • Is it worth buying an brazing flux?
  • What benefits are there with buying an brazing flux?
  • What factors deserve consideration when shopping for an effective brazing flux?
  • Why is it crucial to invest in any brazing flux, much less the best one?
  • Which brazing flux are good in the current market?
  • Where can you find information like this about brazing flux?

We’re convinced that you likely have far more questions than just these regarding brazing flux, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for brazing flux, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible brazing flux. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an brazing flux buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available brazing flux currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of brazing flux has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an brazing flux?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your brazing flux.
  5. Customer Ratings: Number ratings grade brazing flux objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their brazing flux.
  7. Product Quality: You don’t always get what you pay for with an brazing flux, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an brazing flux is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining brazing flux information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding brazing flux is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: What is the best flux for copper soldering?

A: For copper wires use a multicore solder. This has flux embedded in the solder , and helps make a good connection by dissolving copper oxides. For copper pipe use a solid solder , with a separate flux. The flux is applied before soldering.

Q: What kind of flux do you use with silver solder?

A: Electronic “silver” solder actually only contains a very small amount of silver, not enough to warrant using a specific flux for, imo. Any resin or water based flux will do.

Q: What is a heat flux sensor?

A: A heat flux sensor is a transducer that generates an electrical signal proportional to the total heat rate applied to the surface of the sensor. The measured heat rate is divided by the surface area of the sensor to determine the heat flux.