ASTM A179 Extruded Finned Tube With Al1060 Fins For Heat Exchanger
An "extruded finned tube" is a type of heat exchanger component that consists of a base tube on which fins are formed. The fins serve to increase the surface area of the tube, thereby enhancing the heat transfer between the tube and the surrounding environment. This is particularly useful in applications where efficient heat exchange is necessary, such as in air conditioners, radiators, and various industrial processes.
Here are some key features of ASTM A179 extruded finned tube with Al1060 fins:
1. ASTM A179 Base Tube
Material: Low-carbon steel (seamless cold-drawn tubes)
ASTM A179 Material Composition (Weight %)
| Element | Composition Range |
| Carbon (C) | ≤ 0.06 - 0.18% |
| Manganese (Mn) | 0.27 - 0.63% |
| Phosphorus (P) | ≤ 0.035% |
| Sulfur (S) | ≤ 0.035% |
| Silicon (Si) | ≥ 0.10% (typically 0.25-0.50%) |
| Iron (Fe) | Balance (≥ 98%) |
Notes:
Low carbon content improves weldability and reduces brittleness.
Minimal impurities (P, S) enhance corrosion resistance.
ASTM A179 Mechanical Properties
| Property | Value |
| Tensile Strength | ≥ 325 MPa (47,000 psi) |
| Yield Strength | ≥ 180 MPa (26,000 psi) |
| Elongation (in 2") | ≥ 35% |
| Hardness (Rockwell B) | ≤ 72 HRB |
Key Characteristics of ASTM A179 bare tubes:
- Cold-drawn seamless tubes: Improved surface finish and dimensional accuracy.
- High ductility (≥35% elongation) for bending/flaring without cracking.
- Moderate strength: Suitable for low/medium-pressure heat exchangers.
Key Advanteages of ASTM A179 bare tubes :
- Good thermal conductivity
- Corrosion resistance in certain environments
- Suitable for moderate-temperature applications (e.g., boilers, condensers, heat exchangers)
2. Al1060 Fins:
The "Al1060" in the description refers to Aluminum 1060, which is a grade of aluminum known for good corrosion resistance and high thermal conductivity. It is often used for making fins because it enhances heat transfer while resisting corrosion in certain environments.
Advantages of ASTM A179 extruded finned tube with Al1060 fins:
- Efficient Heat Transfer: The aluminum fins (Al1060) provide excellent thermal conductivity, which significantly enhances the heat transfer between the tube carrying the fluid and the surrounding environment. The large surface area provided by the extruded fins enables more effective heat dissipation.
- Durability and Corrosion Resistance: ASTM A179 steel tubes are known for their durability and resistance to damage during handling and operation. When combined with Al1060 fins, which have good corrosion resistance, the result is a finned tube that can withstand harsh operating conditions and has a longer service life.
- Reduced Space and Weight: The high efficiency of heat transfer of these finned tubes allows for a more compact design in heat-exchanging equipment, saving space and reducing weight compared to less efficient options.
- Better Performance in Cooler Temperatures: Aluminum fins maintain good performance even at lower temperatures, making this type of finned tube a suitable choice for applications where the operating environment might be cool.
- Cost-Effectiveness: While providing efficient heat transfer and durability, aluminum fins can also be more cost-effective than some other materials, which can result in lower overall costs for manufacturing and maintenance.
- Standard conformity: Compliance with the ASTM A179 standard ensures that the tubes meet the minimum requirements for tensile strength, flattening, flaring, and other mechanical properties. This means that purchasers and users can be assured of their quality and performance in heat exchange applications.
- Versatility: This type of finned tube can be used in a wide range of applications, including air conditioning, heating, refrigeration systems, and various industrial heat exchangers.
- Customization: The extrusion process allows for a high degree of customization in fin shapes and patterns, which can be tailored to specific applications and requirements for improved performance.
ASTM A179 extruded finned tubes with Al1060 fins are widely used in various applications where efficient heat transfer is required. Here are some common applications:
1. **HVAC Systems:** In heating, ventilation, and air conditioning (HVAC) systems, these finned tubes are used in evaporators, condensers, and heat exchangers to transfer heat between air and refrigerants.
2. **Process Cooling and Heating:** In industrial processes that require controlled temperatures, these finned tubes can be a part of the process chillers and heaters, helping to remove excess heat or add necessary heat for various manufacturing processes.
3. **Power Plants:** In thermal power plants, finned tubes are used in the cooling systems, such as in cooling towers or air-cooled condensers, to effectively dissipate heat generated by the turbines or other machinery.
4. **Petrochemical and Refining Industries:** Heat exchangers in refineries often use finned tubes for condensing or reboiling applications during the distillation process of crude oil or for cooling the chemicals in petrochemical plants.
5. **Food and Beverage Industry:** These tubes can be used in pasteurizers, refrigeration systems, and other heat exchange equipment used to maintain specific temperatures during the food and beverage production process.
6. **Automotive Industry:** They are used in automotive radiators and oil coolers to manage and dissipate the heat produced by the internal combustion engine.
7. **Waste Heat Recovery:** In systems designed to recover waste heat from exhausts or industrial processes, these finned tubes facilitate the transfer of this heat to a fluid that can then be used for other purposes, such as pre-heating or power generation.
8. **Chemical Industry:** Heat exchangers equipped with finned tubes help control the temperatures required for various chemical reactions and processes.
9. **Refrigeration Systems:** These tubes are found in air coolers and freezer evaporators, aiding in the efficient exchange of heat for both commercial and industrial refrigeration.
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