ASTM B163 Incoloy 825 Extruded Fin Tube With Aluminum Fin For Air Cooled Exchangers

1. What is ASTM B163 Incoloy 825 Extruded Fin Tube with Aluminum Fin?

The ASTM B163 Incoloy 825 Extruded Fin Tube with Aluminum Fin is a premium bimetallic heat transfer solution engineered for extreme environments. It combines a seamless nickel-iron-chromium alloy base tube (ASTM B163 Incoloy 825) with integrally extruded aluminum fins through a high-pressure thermal process. This monolithic structure eliminates interfacial resistance, achieving 98% metallurgical bonding for unmatched thermal efficiency (45% higher than welded fins) and corrosion resistance in acidic, chloridic, and high-temperature applications up to 260°C (500°F).

2. Chemical & Mechanical Properties

Chemical Composition (Incoloy 825 Base Tube per ASTM B163)

Mechanical Properties (System Performance)

3. Key Applications & Competitive Advantages

· Chemical Processing: Heaters in sulfuric acid regeneration units, HCl coolers.

· Marine & Offshore: Seawater-cooled condensers on ships/rigs (resists pitting/crevice corrosion).

· Waste-to-Energy: Boiler tubes in waste incinerators (handles HCl/SO₂ flue gases).

· Oil Refining: Crude oil preheaters in CDU/VDU units.

· LNG Processing: Cryogenic heat exchangers (-196°C to 200°C thermal cycling).

4. Why Engineers Prefer Our Extruded Tubes:
· Zero Thermal Barrier: 30% higher heat flux vs. welded fins (per HTRI Journal).
· Fail-Safe Design: Eliminates fin detachment risk in vibration/vacuum service.
· Lifecycle Cost Saving: 2x longer service life than carbon steel tubes in HCl vapor.
· Customization: Fin height (12–25 mm), thickness (0.8–2.0 mm), and helix angle optimization.

Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories,  the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always.   The factories already got certificates like : ABS, LR, DNV-GL, BV, KR, CCS, ASME, ISO 9001, ISO14001, ISO18001, ect.

Our factories main products as below : 
Factory 1th: Stainless steel seamless tube, Duplex steel seamless tube, Super duplex steel seamless tube, Nickel alloy steel seamless tube;

Factory 2th: Carbon steel seamless tube, Alloy steel seamless tube; Enhanced Heat Tranfer Tube, low fin tube ,U bending workshop;
Factory 3th: High frequency welding fin tube(HFW fin tube, Solid Fin tube, Studded Tube, Serrated Fin tube, Longitudinal welding fin tube), Wound fin tube(L type fin tube, LL type fin tube,  KL type fin tube), Embedded G type fin tube , Extruded fin tube,  low fin tube, U bend & 180deg. Return;

Yuhong Holding Group also has gained rich experience for project package( products contain:Pipes, Fittings, Flanges, heat exchanger, furnace, fired heater, air cooler, boiler) , YUHONG brand has marked its global presence in more than 85 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand, Singapore, Malasyia, Indonesia, Thailand, Vietnam, Ukraine, Turkey,Sauid Arabia, Qatar, U.A.E,Israel,India, UK, France, Italy, Gernmany, Poland, Spain,... We have successfully implemented the orders of Cross Country Pipelines for our valuable customers. In addition, we have also developed a huge network of contacts and strategic alliances with most important manufacturers as stockists around the world.