Electrical Electronic

The Three basic types of soldering


Soldering is one of the best ways to join some part like electrical, mechanical etc. component, which is of three different types. If the soldering process is not perfectly done, that is, if a proper amount of heat and flux is not applied. The end result is definitely bad, producing a weaker and poorer joint.

Soldering types

The basic types of soldering include soft, hard and brazing soldering. Soft soldering is the most common, widely used on electrical components. It is considered good when flows of electrons in a circuit and good strength of joint.

In hard soldering, the solder slowly melts on the joint surface, this may be because the soldering is done in an open environment where fresh air cools the temperature of the soldering iron.

Now let go deep on these three types of soldering as they have a lot of distinct difference.


Soft soldering

This soldering process is common in plumbing and electronics industries as it creates electrical connections in a circuit board. It is also good plumbing to join copper pipe and connectors when the flux is added.

The solder used in soft soldering is usually made of a mixture of tin and other types of non-ferrous metals like lead. Fluxes are sometimes added to the joint surfaces which serves a variety of purposes to the joint. the flux help to clean the joint surfaces, strengthen the bond etc. When using soft soldering process on plumbing bonding, flux must be added to it in order to perfectly connect the solder and the pipes.

Soft soldering can either use gas-powered or an electric soldering iron, they create lower and weaker bond than other forms of soldering.

Hard soldering types

Hard soldering provides a stronger bond compared to sold soldering and takes a higher temperature to melt the soldering material. The soldering material used in this situation is normally silver or brass, which requires a blowtorch to melt.

The base metal is heated to a point at which the silver or brass solder melts on the joint surfaces. The joint is created when it cools down. The joint will be referred to as silver soldering if silver is used as the solder material.

Silver melts at a lower temperature when compared to brass, though it is expensive. It is used in hard soldering when joining pieces of copper, silver or brass.


These soldering types involve high temperature to melts the soldering material. It is a similar process with that of hard soldering due to the pieces of metal to be joined are heated. The heat is applied for a specific amount of time but not melted. The solder (brazing filler metal) is then placed on the surface of the heated workpiece. It instantly melts and produces the bond when it cools down. This process is known as capillary action.

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