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What is Brazing Filler Metal, and What is it Made Of?

What is Brazing Filler Metal, and What is it Made Of?

Brazing is a method used to join two pieces of metal by melting and flowing a filler metal into the joint. The material used to create this bond is called brazing filler metal. This alloy is usually made up of two or more metals. In this blog, we’ll dive deeper into what brazing filler metal is and why it’s important for brazing processes.

Brazing filler metals are alloys with a lower melting point than the base metals joining in the brazing process. The alloy typically consists of two or more metals, including silver, copper, nickel, aluminum, tin, zinc, lead, and other elements that give the alloy its desired properties. These alloys are in pre-made forms such as wire, rods, or paste. The type of alloy chosen depends on the application and what materials will be joined together during the brazing process.

The most common type of brazing filler metal used in industrial applications is silver solder alloys which consist of silver, copper, and zinc as primary components. Silver solder alloys offer high-strength bonds along with corrosion resistance which makes them ideal for joining dissimilar metals without affecting their properties or structure. They also have low melting points, which makes them easy to melt and flow into joints during the brazing process. Additionally, they can withstand temperatures up to 900 degrees Celsius (1650 Fahrenheit), making them suitable for use in heavy-duty applications like power plants or chemical plants where heat can be an issue.

Another popular type of brazing filler metal is aluminum solder alloys which consist primarily of aluminum along with other metals such as copper or zinc, depending on the application requirements. Aluminum solder alloys are very versatile since they can join ferrous and nonferrous materials together while maintaining their strength and integrity even at high temperatures of up to 800 degrees Celsius (1472 Fahrenheit). Furthermore, these types of alloys do not corrode when exposed to certain chemicals like some other solders, making them ideal for use in harsh environments where corrosion could be an issue.

Conclusion:

Brazing filler metal is a special alloy used in brazing processes to create strong bonds between two pieces of metal without affecting their properties or structure. This alloy usually consists of two or more metals, such as silver, copper, nickel, etc., depending on the application requirements. Popular types include silver solder alloys for high-strength bonds along with corrosion resistance and aluminum solder alloys for versatility and temperature resistance up to 800 degrees Celsius (1472 Fahrenheit). Understanding what type of brazing filler metal should be used in each situation can help ensure that you get quality results each time you perform a brazing process, no matter what materials you’re working with!

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