Difference Between TMT and TOR Steel Bars

Almost every building we see is made of steel, which has been an essential part of our lives. 

Steel has been used to make everything from the house we live in into the office we work into the bridge we cross. 

There are many different kinds of steel on the market, and it’s essential to choose the best steel bars for our needs because it can significantly affect how long your structure lasts.

A thermo mechanically treated bar, or TMT steel bars, is a high-strength reinforcement bar used in construction. 

They have a lot of unique qualities, such as being easy to shape and resistant to heat, corrosion, and shaking, which has made them very popular. 

For TMT bars, there are different grades of steel bars, such as Fe 415, Fe 500, Fe 550D, and Fe 600. The grade number tells you how good the steel product is. Steel bar grades are another thing that people think about when choosing the right one.

Technically, TOR bars are made of cold-twisted deformed steel, referred to as (CTD) steel. The steel is twisted and bent while it is still cold. This is done after a required heat treatment process.

The type of steel to be used depends on many things, such as where it will be used and how it will be used. 

Due to their unique properties, TMT bars overtook TOR bars in the 1990s. Look at the main ways that TMT bars and TOR bars are different.

STRENGTH

TMT and TOR bars are strong steel bars that can be used in buildings. TMT bars are well-known for being very strong and often used in building projects. 

The tensile strength of TMT bars is higher than that of TOR bars. This is because hot steel billets are passed through cold water jets to harden the outer core of TMT bars.

When building the same thing, TOR steel uses 20% more steel than TMT bars, which makes it more cost-effective. In the end, TMT bars were the strongest, and most people thought they were the best choice.

DURABILITY

TMT bars are also trendy because they last a long time. Corrosion doesn’t happen while the bar is cooled by water, making the bars much stronger. 

TMT bars can be in the water without breaking down because they resist corrosion. This makes them an excellent choice for places with a lot of moisture in the air. 

Unlike TMT bars, which are very resistant to corrosion, TOR bars don’t have anti-corrosion properties. This makes them much more likely to rust. This makes the buildings they are used to last longer, which increases their overall lifespan.

WELDABILITY

Steels with less carbon are easier to join together. Compared to TMT bars, TOR bars have a lot more carbon in them, which makes it very hard to weld through them. 

On the other hand, the low amount of carbon in TMT bars makes them easy to weld when building. 

The inner cores of TMT bars stay soft even when they cool quickly, making them easy to weld for many uses. Some customers only buy steel bars because they can be welded. 

This is why the ability to weld is such an essential part of whether or not a steel bar is good.

RESISTANCE TO HEAT

When TMT bars are used to build a building, it is much less likely to catch fire. If there is a fire, TMT bars are a good choice because they have a high thermal solidity. 

They can handle temperatures as high as 600 degrees Celsius. Regarding this, TMT bars have the upper hand because TOR steel is not very good at resisting heat. This means that it can’t be used when the temperature goes up.

ELONGATION

Most steel bars used in construction are TMT bars with a hard outer layer and a soft inner core. 

People say that TMT bars are stronger and more flexible than TOR steel bars, making them the best ones to use in buildings. 

This is because TMT bars make substantial buildings perfect for places where natural disasters like earthquakes are common.

Conclusion

TOR and TMT bars have become more prevalent in the business world. But the differences above show why TMT bars have grown in popularity over the years. 

As shown above, TMT bars are much better than traditional TOR, which is why many people choose them first. TMT bars are better than TOR bars because they last longer, are stronger, are less likely to catch on fire, can withstand earthquakes, and don’t rust. 

TMT is the best steel bar over and over again. So, which is better? For us, it’s, without a doubt, TMT bars.