solder image
By Christen Foltz

Did you know that you can solder an HVAC connection?

Did you know low-temperature tin/silver solders have higher strength and ductility than typical plumbing solders? This makes them suitable for most residential HVAC connections.

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Harris silver flux image
By Harris Products Group

What is the difference between Harris silver brazing fluxes and where is each one used?

We get a lot of questions about the differences between the silver brazing fluxes we make and where each one should be used, so we've prepared a short guide that provides the answers.

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Brazing with flux image
By Harris Products Group

Why is flux required when brazing brass and not required with copper to copper?

A fluxing agent (or a controlled atmosphere as found in furnace brazing) is required for all brazing and soldering applications. The purpose of the flux is to remove oxides from the base material and to prevent oxidation during the heating process, thus promoting the free flow of the brazing filler metal.

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Production brazing
By Bob Henson

What is solidus and liquidus and why is it important to brazing?

If you look at a list of brazing filler metals you’ll note many compositions and a variety of melting temperatures. The melting characteristics of brazing filler metal are an important aspect in filler metal selection. Here's a brief outline of how alloys melt and the way to use this information to make the best selection.

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Brazing aluminum
By Harris Products Group

What metals can be brazed?

Many different types of metals can be brazed. Copper, and copper based materials like brass and bronze, are typically brazed with copper phosphorus silver alloys also known as American Welding Society (AWS) BCuP filler metals.

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Brazing joint with Harris alloy
By Harris Products Group

Factors to Consider When Choosing a Brazing Alloy

There are many factors that go into selecting a brazing alloy - base metal, joint clearance, and environment are just a few. Here are some things to consider when deciding which brazing alloy you should use.

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Applying brazing flux
By Bob Henson

Five misconceptions about flux

At The Harris Products Group, we sell a lot of brazing and soldering alloys. Over the years we’ve noticed some misunderstandings about the importance of flux in producing a quality brazed joint. This blog entry explores the five most common misconceptions about flux.

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How Brazing Works
By Bob Henson

How Brazing Works - Capillary Action

One of brazing's attributes is the ability of melted filler metal to flow between parts to produce a strong, leak-proof connection. This effect, capillary action, enables braze penetration between two surfaces. It makes it possible to join pipe or tube in the horizontal position and, despite gravity, in the vertical "up" position.

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Brazing paste flux brushed on pipe
By Bob Henson

Brazing Flux 101

A chemical flux is commonly used with many braze filler metals. Proper fluxing is important because the flux absorbs oxides formed during heating and promotes the flow of filler metal. Fluxes are chemical mixtures that contain varying chemical components. The mixture is blended to ensure smooth application and adherence.

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Brazing with flux image
By Bob Henson

Flux Shelf Life

We are frequently asked about the shelf life of brazing flux. To best understand this topic it's helpful to differentiate between shelf life and service life.

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