Different types of steel bars, their full forms, and key features:
| Type of Steel Bar | Full Form | Key Features |
|---|---|---|
| TMT | Thermo Mechanically Treated | High tensile strength and ductility. |
| TMX | Thermo Mechanically Extruded | High tensile strength and improved weldability. |
| HSD | High Strength Deformed | High tensile strength and good bond strength with concrete. |
| CRS | Mild Steel | Low tensile strength and ductility. |
| SD | Plain Round | Low tensile strength and poor bond strength with concrete. |
It is important to note that the key features of each type of steel bar can vary depending on the manufacturer and the grade of steel. It is always best to consult with a qualified engineer to determine the best type of steel bar for your project.
Here are some additional details about each type of steel bar:
- TMT steel bars are made by subjecting the steel to a process called thermo mechanical treatment. This process involves heating the steel to a high temperature and then cooling it rapidly. This process results in a steel bar with high tensile strength and ductility.
- TMX steel bars are made by subjecting the steel to a process called thermo mechanical extrusion. This process involves heating the steel to a high temperature and then forcing it through a die. This process results in a steel bar with high tensile strength and improved weldability.
- HSD steel bars are made by deforming the steel with a series of ridges. These ridges improve the bond strength of the steel bar with concrete.
- CRS steel bars are made from mild steel. Mild steel has low tensile strength and ductility.
- SD steel bars are made from plain round steel. Plain round steel has low tensile strength and poor bond strength with concrete.
The type of steel bar you choose will depend on the specific requirements of your project. If you need a steel bar with high tensile strength, you should choose a TMT or TMX bar. If you need a steel bar with good weldability, you should choose a TMX bar. If you need a steel bar with good bond strength with concrete, you should choose an HSD bar. If you need a steel bar with low cost, you should choose a CRS bar. If you need a steel bar with good workability, you should choose an SD bar.