Comparision Between SA178 Tube Vs SA179 Tube

Comparision Between SA178 Tube Vs SA179 Tube

SA178 and SA179 are both specifications for carbon steel tubes used in heat exchangers and condensers. Lets compare them based on various factors:

1. SA178 Tube Vs SA179 Tube Composition: 

   - SA178: It is a specification for electric-resistance-welded carbon steel tubes. The composition of SA178 tubes typically includes carbon, manganese, phosphorus, sulfur, and silicon.

   - SA179: It is a specification for seamless cold-drawn low-carbon steel tubes. The composition of SA179 tubes generally includes carbon, manganese, phosphorus, and sulfur.

2. SA178 Tube Vs SA179 Tube Manufacturing Process:

   - SA178: These tubes are manufactured using the electric resistance welding (ERW) process, which involves the formation of a weld by applying high-frequency electric currents. This process results in welded joints.

   - SA179: These tubes are manufactured through the cold-drawn process, where the tubes are drawn through a die to reduce their diameter and achieve the desired dimensions. This process results in seamless tubes without any welded joints.

3. SA178 Tube Vs SA179 Tube Mechanical Properties:

   - SA178: SA178 tubes have good tensile strength and yield strength properties. They are suitable for applications requiring high strength and pressure resistance.

   - SA179: SA179 tubes have relatively lower tensile and yield strength compared to SA178 tubes. They are designed for low-pressure applications and are known for their excellent thermal conductivity.

4. SA178 Tube Vs SA179 Tube Applications:

   - SA178: These tubes are commonly used in high-pressure applications, such as power generation, boilers, and superheaters.

   - SA179: These tubes are typically used in low-pressure applications, such as heat exchangers, condensers, and evaporators, where thermal conductivity is a crucial factor.

5. SA178 Tube Vs SA179 Tube Availability:

   - SA178 and SA179 tubes are readily available in the market from various manufacturers and suppliers.

In summary, SA178 tubes are electric-resistance-welded carbon steel tubes suitable for high-pressure applications, while SA179 tubes are seamless cold-drawn low-carbon steel tubes primarily used in low-pressure applications with a focus on thermal conductivity. The choice between the two will depend on the specific requirements of your application, such as pressure, temperature, and desired properties.

SA178 Tube Vs SA179 Tube