What is Metal Galling and How It Caused?

what is Metal Galling?

Have you ever wondered what metal galling is? Metal galling is a form of wear that occurs when two metal surfaces rub together. This can cause the surfaces to stick together or even tear apart. In this blog post, we’ll discuss what causes metal galling, how to identify it, and methods of prevention.

What Causes Metal Galling?

When two metal surfaces are under pressure while they rub against each other, they can become stuck together due to an accumulation of debris between them. This debris can be tiny pieces of dirt or particles from the environment. When these particles get trapped between the surfaces, they create friction which causes heat buildup and eventually leads to galling. Additionally, if the metals have different properties such as hardness or surface finish, the softer metal will be worn away by the harder one.

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What Are The Signs Of Metal Galling?

Metal galling is usually characterized by scratches or grooves on the surface of a component caused by abrasion between two parts sliding against one another during operation. It can also cause corrosion due to oxidation or chemical reactions between two different metals in contact with each other. Finally, it can cause premature failure or breakdown of components due to excessive wear or fatigue loading caused by repeated rubbing motion over time. 

How To Prevent Metal Galling?

There are several ways to prevent metal galling including lubrication and using anti-galling coatings such as nickel plating or chrome plating on components that are subject to rubbing against each other during operation. Additionally, using materials with similar physical properties such as hardness and surface finish will help reduce chances of galling as well as proper design techniques such as keeping parts from coming into contact with each other during operation.


Metal galling is an issue that should not be taken lightly because it can lead to damage of parts and premature failure if not addressed properly. By understanding what causes metal galling, how to identify it, and methods for preventing it you can ensure your components last longer and function more efficiently for your application needs! Taking preventive steps like lubrication, anti-galling coatings, and designing parts correctly can help minimize wear from occurring in the first place so make sure you keep these tips in mind next time you are dealing with metal-on-metal contact!

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