Welding vs Brazing: Key Differences in Joining Techniques

Welding vs Brazing

Welding and brazing are very common joining process widely used in the engineering world. The difference between the two is very obvious in their appearance and when put to service. These two methods can be used to join broken parts and or to fill a gap in metals.

Today we are going in-depth on the differences between welding and brazing. Stay focus to attain knowledge.

The major difference between brazing and soldering occurs in the process. in welding where metal and thermoplastics pieces are joined, the base and filler metal melts. Each of them forms molten material on the joint, which solidifies and create a strong joint.

On the other hand, brazing, which does not melt the base metal but the filler metal, melted in-between the parts needed to be joined. The wetting created between the joints get solidifies and gives the joint more strength.

Just as mentioned earlier, brazing is similar to soldering as the part to be joined must be free from oxides. It must also be thoroughly clean from oil, dirt etc. another may difference between these joining processes is the temperatures, in welding high temperatures are needed. But in brazing, the temperature needed is a bit lower than the one used in welding.

Brazing vs welding

The following stated below are the major difference between the two processes;

1. In welding, the joint is achieved with or without filler material. Filler material must be added in brazing.

2. The temperature above the melting point of the work-piece in welding is almost 3600-degree Celsius. While in brazing the filler materials melt at the temperature of about 600-degree Celsius.

3. In welding, the properties of base metals change after joining, whilst in brazing, it remains the same.

4. A very strong joint is produced in welding, brazing produces weaker joints when compared with welding.

5. It is not compulsory to clean the work-piece in welding, but in brazing, the work-pieces must be cleaning before joining.

6. Brazing is mostly used to join dissimilar metals, but welding is used mostly to join similar metal.

7. Brazing suited on small assembly, but welding is suitable in joining the large assembly.

8. Finally, brazing joints cannot withstand high temperature, but  welding can withstand high temperature

I hope you found this post interesting and you’ve attained knowledge. If so, you can freely give your point in our comment section and please share with other students. Thanks!