14 Common Difference Between Welding, Brazing and Soldering

Hello, friends today I am going to tell you what is difference between welding, brazing, and soldering?

But before knowing the difference between welding, brazing, and soldering first of all we have to know what is welding, brazing, and soldering.

I have already discussed in our previous article the difference between soldering and brazing. But here is only one known difference between welding, brazing, and soldering.

So without wasting time let's get started.

What is Welding?

Welding is a process of joining two or more parts by heat and pressure, such joints are permanent in nature.

What is Brazing?

Brazing is the metal joining process in which two or more metals are joined together by melting and pouring a filler metal.

The joint formed by brazing is permanent in nature.

What is Soldering?

Soldering is the method of joining two or more similar or dissimilar metal parts without any change in their original structure.

The joint formed by soldering is a semi-permanent joint.

difference between welding, brazing and soldering

Difference Between Welding, Brazing, and Soldering

Welding Brazing Soldering
These are the strongest joints that can bear the load.  The strength of the welded joint may exceed the strength of the base metal These are stronger than soldering but weaker than welding.  It can be used to bear some load.   These are the weakest joints compared to brazing and welding.  Do not lift weights.  Generally, use to make electrical contact. 
The desired welding area temperature is up to 3800 °C.   In brazing, it can go up to 600°C.   The temperature required is up to 450 °C. 
Joining requires the workpieces to be heated to their melting point. The workpiece is heated but below the melting point. The workpiece does not need to be heated.
The mechanical properties of the base metal may vary in the joint space due to heating and cooling.   The mechanical properties of the joint may change, but this is almost negligible.  There is no change in the mechanical properties after joining.  
Involving heat consumption requires high-level skill.   The costs involved and the skills required are among soldering and welding.   The cost involved and the skill required are very low.  
Heat treatment is usually required to eliminate the unwanted effects of welding. No heat treatment is required after brazing. No heat treatment is required.
Since this is done at high temperatures, it is not necessary to preheat the work before welding.  Preheating is beneficial for forming solid joints because brazing is performed at relatively low temperatures. No preheating is required.
High Cost  Low cost Low cost 
Toxic Toxic in nature. Toxic in nature.
Filler Material Optional. Filler materials are essential. Filler material mandatory. 
Flux use is optional.  Flux required Flux required
Base metal fused. Base metal does not fuse. Do not fuse base metal.
Difficult to weld different metals. Different metals can be joined.   Different metals can be joined.
Difficult to weld thin sheets. Thin sheets can be joined. Thin sheets can be joined.

So friends here I have discussed what is difference between welding, brazing, and soldering? I hope you like this post.

Thank you.

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