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Welding VS Soldering: what’s the key differences

Welding and soldering are techniques for joining two or more pieces of metal. In some cases, also included other materials . They are also techniques for filling gaps in metal components. If you're planning a project that involves joining metal pieces together, how do you decide which technique to use?

T420D soldering station

 

Welding and soldering techniques are applied to different work. Depending on the work you are doing, you must consider factors such as the type of metal, required strength, and end purpose to determine the best technique for your project.

 

What is welding?

 

Welding is a fabrication process that joins materials, usually metals or thermoplastics, by using high heat to melt the parts together and allowing them to cool, causing fusion. Welding is distinct from lower temperature techniques such as brazing and soldering, which do not melt the base metal (parent metal). --Wikipedia

 

What is soldering?

 

Soldering is a joining process used to join dissimilar metals together by melting solder. The Solder is a metal alloy, usually made of tin and lead, that is melted by using a hot iron. The iron is heated to temperatures above 600 degrees Fahrenheit, then cooled to form a strong electrical connection.

 

The difference between welding and soldering

 

Welding VS Soldering: Both welding and soldering are manufacturing techniques and the following are their differences.

 

Strength

 

Welding: Welding joints are used to bear the load, and the strength of the portion of the joint usually more than the base metal

Soldering: Solder joints are not designed to bear loads, it is generally used to make electronic contacts

 

Temperature

 

Welding:  up to 3800°C.

Soldering:  approximately 350-450 °C

 

Workpiece heating

 

Welding: Requires heating to the workpieces melting point

Soldering: Not required

 

Heat treatment

 

Welding: Heat treatment is usually required to eliminate the undesirable effects of welding

Soldering: Not required

 

Changes in mechanical properties

 

Welding: The mechanical properties of the parent metal may change at the joint due to heating and cooling

Soldering: No change

 

Work scene

 

Welding: common in the automotive, manufacturing and construction industries

Solder: mainly in the electronics industry.

 

Workpiece preheating

 

Welding: No need to preheat the workpiece before welding because it is carried out at high temperature

Soldering: Preheating the workpiece before welding is required

 

Are you planning a soldering project?

 

Hope this article helps you get started with the basics of welding and soldering. Does your business require metal fabrication and soldering?

 

Shenzhen AiXun Intelligent Hardware Co.,Ltd is a professional manufacturer of soldering stations, soldering equipment and one-stop electric soldering consumables. If you need to purchase soldering stations, please feel free to contact: info@aixun.com

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