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.
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