Brazing vs Welding: Comparative Analysis


“Brazing vs welding” topic will be prate in a brief manner in this article. The major difference between the welding and brazing is the source of heat.

In the welding and brazing process welder added filler metal into the joints of the metals. The difference between the Brazing and welding are discuss below,

Serial numberWeldingBrazing
1.Temperature used in the welding process is more than the melting point of a base metal. The temperature can maximum goes upto for welding process near about 38000 Temperature used in the brazing process is less than the melting point of a base metal. The temperature can maximum goes upto for brazing process near about 6000 [latex]600^{\circ} C[/latex].
2.Distortion rate for the welding process is moreDistortion rate for the brazing process is less.
3.Stress is appear in the base metals during the welding processStress is not appearing in the base metals during the brazing process.
4.Filler metals are not used during the welding processFiller metals are used during the brazing process.
5.The tensile strength is observe during the welding process and it range will be more than 200 MPaThe tensile strength is observe during the brazing process and it range will be between 100 – 150 MPa
6.Similar metal with made same composition and also the temperature of melting point of the base metals only can be joined togetherDissimilar metal with made dissimilar composition and also the different temperature of melting point of the base metals can be easily joined together.
7.For the large assembly welding is usedFor the small assembly brazing is used.
8.  By the help of welding stronger joints can be making.  By the help of brazing weaker joints comparative to the welding joints can be making.    
9.In the welding before doing the operation workpiece should be cleanIn the brazing before doing the operation workpiece should be clean but this not necessary.
10.In the welding process the properties for the metals are change after completing the process.In the brazing process the properties for the metals are not change after completing the process.
11.  Welding process can be define as, in which joining process both workpiece are dissolve together without or with application of filler metal using the upper temperature of melting point of the base metals.  Brazing process can be define as, in which joining process both workpiece are dissolve together with application of filler metal using the lower temperature of melting point of the base metals.  

Brazing process vs. Welding:

The process of brazing is safer compare to the welding process.

Welding process can be define as, in which joining process both workpiece are dissolve together without or with application of filler metal using the upper temperature of melting point of the base metals and Brazing process can be define as, in which joining process both workpiece are dissolve together with application of filler metal using the lower temperature of melting point of the base metals.

Brazing rod vs. Welding rod:

In the process of the brazing welding rods can be used.

In the welding process both workpiece are dissolve together without or with application of filler metal using upper temperature of melting point of the base metals in other way in the brazing process both workpiece are dissolve together with application of filler metal using the lower temperature of melting point of the base metals.

brazing vs welding
Image – Diagram of arc and weld area, in shielded metal arc welding. 1.Coating Flow;2.Rod;3.Shield Gas;4.Fusion;5.Base metal;6.Weld metal;7.Solidified Slag; Image Credit – Wikipedia

Brazing vs Welding:

Expert hands not needed in the brazing but in welding expert hands are needed.

The major difference between the process of welding and brazing is the source of heat. In the process of the brazing the source of the heat works as furnace, resistance, torch, dipped, induction and in the process of the welding the heat source works as electricity.

In the process of the brazing the temperature will be around 550 degree centigrade and the process of the brazing the temperature will be around 2800 degree centigrade.

What is the advantage of brazing over welding?

Both the welding and brazing are best solution. Sometimes brazing is appropriate for some applications and sometimes welding is appropriate for some applications.

The advantages of brazing over welding are discuss below,

Speedy operation:-

Brazing is a speedy operation compare to the welding process. In the brazing operation the processing temperature and power input is lower compare to the welding. The joints create by the brazing process have minimal residual stress and thermal distortion rate. The heat treatment process before doing the brazing operation is not needed. Dissimilar metal with made dissimilar composition and also the different temperature of melting point of the base metals can be easily joined together.

Less expensive:-

Brazing is an automated method although expert robotics is not needed to operate this process for this reason brazing became less expensive and money can be easily saves with this process.

Ideal production for mid volume to high volume:-

In the welding process productivity takes little more time but the brazing is automated process for this reason from medium volume production to high volume production easily can be make in a short time. The brazing is time consuming process.

Less complicated process:-

Temperature used in the welding process is more than the melting point of a base metal. The temperature can maximum goes upto for welding process near about 38000 for this reason the properties of the joints in base metals are changed and difficult to work with the melts of the base metal and also expert hands are needed all together welding became complicated process.

While, temperature used in the brazing process is less than the melting point of a base metal. The temperature can maximum goes upto for brazing process near about 6000 for this reason the properties of the joints in the base metals are not changed and not difficult to work with the melts of the base metal and also expert hands not are needed all together brazing became less complicated process.

Create cleaner joints:-

Irregular beads are made in the welding process that creates from the part. In the other way no beads or very small beads are made in the brazing process which is great for the welders.

Maintain tight tolerance:-

In the brazing process the base metals are not melt being joint for this reason the shape of the base metal not defected, while in the welding process the base metals are melt being joint for this reason the shape of the base metal are defected due to higher temperature than the melting temperature of the base metals.

Image Credit – A US Navy maintenance technician torch brazes a steel pipe;
Image Credit – Wikipedia

Is brazing harder than welding?

In the welding process the properties of the base metals are changed.

Brazing harder than the welding or welding harder than the brazing is totally depending upon the joint configuration. The inner joints of the base metals are easy to weld and in the case of joining dissimilar metal brazing are easier than the welding.

Brazing vs. welding strength:

The method of brazing is not too much effective in the high temperature.

The joints strength for the base metals is strong in the process of the welding. Brazing process is work lower than the melting points for the base metals for this reason base metal does not dissolve. Rather, the source of the heat dissolve a filler metal and by the action of the capillary and compose it within the joints.

Brazing vs. welding cast iron:

Brazing is more suitable work with the cast iron.

Cast iron jobs are done in small repairing and in the case of brazing also suitable for small area repairing and risk of cracking is easily can be reduce for this while cast iron jobs are not suitable for welds.

Brazing vs. welding bike frame:

Bike frames are usually made with aluminium, carbon, steel even with cardboard.

With the both brazing and welding process frames of the bikes are made it’s totally depend on the materials and structure. With aluminium we easily can weld and with the steel frames of the bikes brazing can be done.

Brazing vs. welding steel:

Propane torch is used in the braze.

Brazing steel joint is stronger compare to the welding steel joint. A properly created brazed joint is more strong compare to the base metals being joined and the temperatures in that case remain low near about 600 degree centigrade.

Brazing vs. welding aluminium:

Brazing with aluminium is speedier.

In the joining of metals for aluminium brazing process is more quick compare to the Tungsten Insert Gas Welding process. The strength for the aluminium brazing and aluminium welding both are same.

Bronze brazing vs. welding:

For joining dissimilar metals bronze brazing is more effective.

In the welding process both workpiece are dissolve together without or with application of filler metal using upper temperature of melting point of the base metals in other way in the brazing process both workpiece are dissolve together with application of filler metal using the lower temperature of melting point of the base metals.

Fillet brazing vs. welding:

Brazing can joins permanently two metals with the help of torch.

Lugged joints and fillet brazed joints are done by heating the filler material (but not the base metal) to its melting point using a very hot flame, usually from oxy-acetylene or oxy-propane whereas welding is done by electrical current – basically tiny lightning bolts are used to melt the metals.

Indrani Banerjee

Hi..I am Indrani Banerjee. I completed my bachelor's degree in mechanical engineering. I am a enthusiastic person and I am a person who is positive about every aspect of life. I like to read Books and listening to music.

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