Difference between Fe 500 TMT Grade Bar and Fe 550 TMT Grade Bar

What are the major differences between Fe 500 TMT Grade Bar and Fe 550 TMT Grade Bar?

Fe 500 and Fe 550 TMT Grade Bar are both used for the same purpose: to make steel.

They’re both high-strength steels that can be used in a variety of industrial projects, but they differ in their chemistry and the processes used to produce them.

Before we move to the differences, let’s understand what are Fe 500 TMT Grade Bar and Fe 550 TMT Grade Bar:

  • Fe 500 TMT Grade Bar: Fe 500 TMT Grade Bar is a grade of steel that is used in the construction industry and other industries. It has a high yield strength, meaning it can withstand high stress. It also has good toughness and ductility.
  • Fe 550 TMT Grade Bar: Fe 550 TMT Grade Bar is a high-grade alloy steel that is used to make bars, rods, and structural shapes. This type of steel has very high strength and hardness, which makes it a good choice for use in industry.

Major differences between Fe 500 TMT Grade Bar and Fe 550 TMT Grade Bar

Fe 500 TMT Grade Bar Fe 550 TMT Grade Bar
The tensile strength of Fe 500 TMT Grade Bar is 8% more than 0.2% PS, but not less than 545.0 N/mm2. The tensile strength of Fe 550 TMT Grade Bar is 6% more than 0.2% PS, but not less than 585.0 N/mm2.
In TMT Bar Grade Fe 500, Fe denotes made of iron, numerical figure 500 stand for their minimum yield strength in N/mm2. In TMT bar grade Fe 550, Fe denotes made of iron, numerical figure 550 stand for their minimum yield strength in N/mm2.
Chemical composition of Fe 500 TMT Grade Bar: Iron mixed with some amount of carbon(0.3%), sulphur(0.055%), phosphorus(0.055%) materials by mass and S+P is about 0.105%. Chemical composition of Fe 550 TMT Grade Bar: Iron mixed with some amount of carbon(0.3%), sulphur(0.06%), phosphorus(0.06%) materials by mass and S+P is about 0.11%.
Mechanical properties of Fe 500 TMT Grade Bar: 1) their yield strength (fy) is 500N/mm2, 2) ultimate tensile strength (fu) is 545N/mm2, 3) elongation is 12 and 4) YS ratio is 1.09. Mechanical properties of Fe 550 TMT Grade Bar: 1) their yield strength (fy) is 550N/mm2, 2) ultimate tensile strength (fu) is 585N/mm2, 3) elongation is 10 and 4) YS ratio is 1.06.
This grade of TMT bar best suitable for construction of multiple storey and commercial building and it is resistant to corrosion. This grade of TMT bar best suitable for large-scale project like bridge and construction of heavy underground structure.

Final words

The Fe 500 and Fe 550 TMT grade bars are both great choices for your project.

They have a high yield strength, so they’re great for projects where you need something to be strong. The Fe 500 has a slightly lower yield strength than the Fe 550, but it also costs less per ton.

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