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Fusion Bonded Epoxy Coated Tmt Steel Bar – Everything You Need to Know


For the last few years, we’ve heard a lot about “fusion-bonded” epoxy-coated steel. This is the term used to describe the technique of coating high-strength steel bars with an epoxy composite that bonds to carbon/epoxy structures on both sides of the bar. 

To purchase the best quality fusion bonded epoxy coated TMT bars you can hire industry experts like Sugna TMT. 

Let’s explore why you may want to consider using fusion bonded epoxy coated steel in your projects, as well as its benefits.

What is the fusion-bonded epoxy coating?

Fusion bonding is joining two materials that usually have a significant difference in mechanical properties by using a bonding agent such as epoxy resin. The result is a stronger, more durable, and more attractive material that is relatively easy to machine. 

Epoxy is a clear, colourless, oily liquid with a high melting point that is used as a bonding agent in the production of polymers. When epoxy resin comes in contact with a steel bar, it forms a bond with carbon in the presence of oxygen. The bonds are relatively strong, and the resulting material is a highly-resistant metal—epoxy coated steel.

How does it work?

The epoxy coating works in a few steps:

  1. A Steel Bar is Fused With Epoxy 
  2. The Fused Bar is Cure Ready 
  3. The Epoxy Is Deposited on the Steel Bar 
  4. The Epoxy Is Scraped Off 
  5. The Steel is Dry-Cured
  6. Hot-Stamping Epoxy coating 

Why choose fused bond epoxy coated steel?


The aesthetic appeal of the final product is higher. The grain structure and internal stresses in plain epoxy-coated steel are retained, making the material less likely to fatigue. The process makes it easier to machine, which improves productivity. It is less expensive. It has a higher tensile strength than plain epoxy-coated steel.

Benefits of Using Epoxy Coated Steel

Epoxy has a long history as a corrosion-resistant and weather-proofing material. It is also a solid and durable material, able to weather hard work and heavy exposure to the elements. It’s also solid in the right environment, so it is often used in building applications.

Epoxy is “self-lubricating,” which means it will flow where it’s applied, and it will lap back into place if exposed to friction. This property makes it an excellent material for applications such as automotive body panels, boat decks, or even structural supports like the arches at the top of the bridge. 

Epoxy is also incredibly affordable. You can easily save 10% or more by opting for epoxy-coated steel instead of a plain one.

When to use Fusion Based Epoxy Coated Steel

Although the epoxy coating is an excellent material for all applications, it is most effective when used up-front. The more time passes between application and use; the less effective the coating will be. The bonds formed during the up-front process are more robust than in-between applications.


Fusion bonded epoxy-coated steel offers advantages over plain epoxy-coated steel, mainly when used up-front. It’s less expensive than plain steel, and it has a better finish. It’s also more accessible to machines, which improves productivity. It also helps to use a thicker coat since each pound of weight added causes less friction during movement.