| Application: | Industry， Construction， Decoration， Chemical， Petroleum， Etc. | Length: | 1-12m |
|---|---|---|---|
| Material: | INCOLOY 825 | Outer Diameter: | 6-3000mm |
| Package: | Standard Export Package Or As Customer’s Requirement | Payment Term: | T/T， L/C， Western Union |
| Standard: | ASTM， AISI， GB， JIS， DIN， EN | Thickness: | 0.5-100mm |
| High Light: | ASTM B163 Fin Tube， Boiler Tube With Aluminum Fin， Incoloy 825 Fin Tube | ||
ASTM B163 INCOLOY 825 FIN TUBE With Aluminum Fin For Boiler
ASTM B163 is the standard specification for seamless nickel and nickel alloy condenser and heat-exchanger tubes. It covers various grades of nickel and nickel alloy tubes， including Incoloy 825.
Incoloy 825 is a nickel-iron-chromium alloy with additions of molybdenum， copper， and titanium. It offers excellent corrosion resistance in various environments， including highly oxidizing and reducing conditions. Incoloy 825 is commonly used in applications such as chemical processing， oil and gas， and marine environments.
A fin tube with aluminum fins is a type of heat exchanger tube that has aluminum fins attached to its outer surface. The fins increase the surface area of the tube， allowing for enhanced heat transfer efficiency. Aluminum is commonly used for the fins due to its high thermal conductivity and lightweight properties.
When used in boilers， ASTM B163 Incoloy 825 fin tubes with aluminum fins provide efficient heat transfer and corrosion resistance. The combination of Incoloy 825's corrosion resistance and aluminum's thermal conductivity makes it suitable for high-temperature and corrosive environments typically encountered in boiler applications.
Mechanical Properties
| Temper | Annealed | |
| Tensile Rm | 85 | ksi (min) |
| Tensile Rm | 590 | MPa (min) |
| R.p. 0.2% Yield | 35 | ksi (min) |
| R.p. 0.2% Yield | 240 | MPa (min) |
| Elongation (2” or 4D gl) | 30 | % (min) |
Physical Properties (Room Temperature)
| Specific Heat (0-100°C) | 440 | J.kg-1.°K-1 |
| Thermal Conductivity | 11.1 | W.m -1.°K-1 |
| Thermal Expansion | 14 | μm/μm/°C |
| Modulus Elasticity | 196 | GPa |
| Electrical Resistivity | 1.13 | Ohm-cm |
| Density | 8.13 | g/cm3 |
Chemical Composition (% by weight)
| Element | Min | Max |
| C | – | 0.05 |
| Si | – | 0.5 |
| Mn | – | 1 |
| P | – | 0.03 |
| S | – | 0.03 |
| Al | – | 0.2 |
| Cr | 19.5 | 23.5 |
| Cu | 1.5 | 3 |
| Fe | Balance | |
| Mo | 2.5 | 3.5 |
| N | 0.15 | 0.25 |
| Ni | 38 | 46 |
| Ti | 0.6 | 1.2 |
Application Of ASTM B163 INCOLOY 825 FIN TUBE With Aluminum Fin For Boiler
ASTM B163 specification covers seamless nickel and nickel alloy condenser and heat-exchanger tubes with aluminum fin for boiler applications. In this case， the application of ASTM B163 INCOLOY 825 fin tube with aluminum fin for boiler can provide several benefits:
1. Corrosion Resistance: INCOLOY 825 is a nickel-iron-chromium alloy with excellent resistance to various corrosive environments， including acids， alkalis， and chloride solutions. This makes it suitable for boiler applications where corrosion resistance is crucial.
2. High Temperature Strength: INCOLOY 825 has good mechanical properties at elevated temperatures， making it suitable for use in boilers operating at high temperatures.
3. Heat Transfer Efficiency: The addition of aluminum fins to the INCOLOY 825 tubes increases the heat transfer efficiency by providing a larger surface area for heat exchange. This improves the overall performance of the boiler system.
4. Cost-effective Solution: The combination of INCOLOY 825 and aluminum fins offers a cost-effective solution for boiler applications compared to other materials with similar corrosion resistance and heat transfer properties.
5. Longevity: INCOLOY 825 has excellent resistance to stress corrosion cracking and pitting， ensuring the longevity of the fin tube in boiler applications.
6. Versatility: ASTM B163 allows for a wide range of tube diameters and wall thicknesses， providing flexibility in design and application for various boiler systems.
