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ASME SA209 Embedded Fin Tube With AL1060 Fin For Boiler Economizers and Air Heaters

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Yuhong Group Co.,Ltd
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City:ningbo
Province/State:zhejiang
Country/Region:china
Contact Person:MrJikin Cai
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ASME SA209 Embedded Fin Tube With AL1060 Fin For Boiler Economizers and Air Heaters

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Brand Name :YUHONG
Model Number :ASME SA209
Certification :ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Place of Origin :China
MOQ :1PCS
Price :Negotiable
Payment Terms :T/T, L/C
Supply Ability :1000 tons per month
Delivery Time :Depends on quantity
Packaging Details :IRON FRAME CASE
Tube Material :ASME SA209
Bare Length :Customized
Fin Pitch :2.1-5
Fin Height :<17mm
Fin Thickness :~0.4mm
Production Name :Embedded Fin Tube
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1. Base Tube Material: SA209

Composition:

Carbon (C) 0.10–0.20%
Manganese (Mn) 0.30–0.80%
Phosphorus (P) ≤ 0.025%
Sulfur (S) ≤ 0.025%
Silicon (Si) 0.10–0.50%
Molybdenum (Mo) 0.44–0.65%
Copper (Cu) ≤ 0.25% (if present)
Chromium (Cr) ≤ 0.30%
Nickel (Ni) ≤ 0.40%
Vanadium (V) ≤ 0.03%

Properties:

  • Good high-temperature strength and creep resistance.
  • Improved resistance to oxidation and corrosion compared to plain carbon steels at elevated temperatures.
  • Good weldability.

2. Fin Material: AL1060

Properties:

Excellent Thermal Conductivity: (~230 W/m·K) - The primary reason for using aluminum fins.

Good Corrosion Resistance: Forms a protective oxide layer.

High Formability/Ductility: Easily shaped during manufacturing.

Low Density: Lightweight.

Low Strength: Softer than alloyed aluminums, but sufficient for many fin applications.

High Electrical Conductivity.

3. Fin Type: Embedded (G-Fin)

Manufacturing Process:

  • A groove is machined (often by knurling) into the outer surface of the steel base tube.
  • A strip of aluminum fin stock (AL1060) is fed into the groove.
  • High-pressure rollers or dies force the tube wall material over the edges of the aluminum strip, cold-working and mechanically locking the fin base securely into the groove. This creates a continuous, tight, mechanical bond along the entire length of the fin.

Key Features:

  • Strong Mechanical Bond: The fin is physically locked into the tube wall, offering excellent resistance to fin loosening due to thermal cycling or vibration.
  • No Solder/Braze: Eliminates issues like flux corrosion, braze alloy melting point limitations, or potential voids in the bond line.
  • Direct Metal-to-Metal Contact: Provides low interfacial thermal resistance (good heat transfer efficiency).
  • Fin Integrity: The AL1060 fin material itself remains unaltered (not melted), retaining its full thermal conductivity and corrosion resistance.
  • Fin Density: Allows for relatively high fins per inch (FPI).
  • Appearance: Typically has a clean, metallic look with a visible seam where the tube metal is rolled over the fin base.

Key Advantages:

  • High heat transfer efficiency.
  • Excellent fin bond strength and durability under thermal cycling.
  • Good high-temperature capability of the base tube.
  • Corrosion resistance of fins (AL1060) and base tube (SA209).
  • No low-melting-point braze alloys to limit operating temperature.

4. Application

  • Marine & Offshore Systems
  • Desalination Plant Heat Exchangers
  • Sulfuric Acid (H₂SO₄) Coolers
  • Sour Gas (H₂S) Reboilers
  • Steam Condensers in Geothermal Plants
  • Flue Gas Waste Heat Recovery
  • Ammonia (NH₃) Evaporators
  • Heat Recovery Ventilators (HRVs)

5.Typical Applications:

  • Heat Recovery Steam Generators (HRSGs): Economizer and evaporator sections.
  • Boiler Economizers: Recovering heat from flue gases.
  • Air Heaters (Ljungström type or tubular): Preheating combustion air.
  • Process Gas Heaters/Coolers: In refineries, petrochemical, and chemical plants.
  • High-Temperature Finned Tube Bundles: Where both elevated temperature resistance and efficient extended surface are required.

ASME SA209 Embedded Fin Tube With AL1060 Fin For Boiler Economizers and Air Heaters

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