Aluminium Fin Stock | Haomei Aluminum

Aluminum fin stock is a lightweight, formable, and corrosion-resistant aluminum alloy material, widely used in the manufacturing of automotive radiators, heat shields, and various heating, ventilation, and air conditioning (HVAC) equipment.

Aluminium Fin Stock is made from 1000, 3000, and 8000 series aluminum alloys, characterized by excellent thermal conductivity, low density, and light weight.

The aluminum fin stock is coated to enhance its corrosion resistance and service life. The coating helps prevent the metal from corrosion damage and other external factors during long-term use.

Specifications of Aluminium fin stock

Alloy	Temper	Thickness(mm)	Width (mm)	I.D.(mm)	Mechanical Properties
Alloy	Temper	Thickness(mm)	Width (mm)	I.D.(mm)	Tensile Strength (Mpa)	Elongation(%)	Erichson (IE, mm
1100	O	0.08-0.2	100-1400	I.D.75/150/	80-110	≥27	≥6.0
1200	H22	(+/-5%)	(+/-1)	200/300/505	100-135	≥22	≥5.5
3102	H24				115-145	≥20	≥5.0
8011	H26				125-160	≥10	≥4.5
8006	H18				≥160	≥1	-
Special specifications can be produced as per customer's requirements

Characteristics of Aluminum Fin Stock

Lightweight: The low density of aluminum fin stock makes it an ideal lightweight material suitable for various applications.

Formability: Good ductility and workability allow it to be easily formed, making it suitable for manufacturing complex shapes.

Corrosion Resistance: Aluminum alloys have excellent corrosion resistance, making them suitable for various environmental conditions.

Common Fin Stock alloys and tempers include

1100 O Aluminum Fin Stock: Soft annealed condition for general formability.
1100 H14 Aluminum Fin Stock: Slightly strain-hardened, suitable for moderate strength and formability.
1100 H18 Aluminum Fin Stock: Higher strength than H14 due to further strain hardening.
1100 H19 Aluminum Fin Stock: Similar to H18 but with higher strength characteristics.
1100 H25 Aluminum Fin Stock: Strain-hardened to achieve increased strength.
1100 H111 Aluminum Fin Stock: Fully annealed to achieve maximum ductility.
1100 H211 Aluminum Fin Stock: Strain-hardened and partially annealed for improved strength and formability.
1100 H113 Aluminum Fin Stock: Strain-hardened and partially annealed with a controlled amount of cold work.
3003 O Aluminum Fin Stock: Soft annealed condition for good formability and corrosion resistance.
3003 H14 Aluminum Fin Stock: Strain-hardened, suitable for moderate strength and formability.
3003 H18 Aluminum Fin Stock: Higher strength than H14 due to further strain hardening.
3003 H19 Aluminum Fin Stock: Similar to H18 but with higher strength characteristics.
3003 H25 Aluminum Fin Stock: Strain-hardened to achieve increased strength.
3003 H111 Aluminum Fin Stock: Fully annealed to achieve maximum ductility.
3003 H211 Aluminum Fin Stock: Strain-hardened and partially annealed for improved strength and formability.
3003 H113 Aluminum Fin Stock: Strain-hardened and partially annealed with a controlled amount of cold work.

These aluminum fin stocks, ranging from annealed (O) to fully hardened (H113) tempers in both 1100 and 3003 alloys, are commonly used in heat exchangers and HVAC components such as air conditioners, radiators, and evaporators.

Chemical Composition of Different Alloy Aluminum Fin Stock

Chemical composition of Aluminium fin stock Alloy (%)	AA1050	AA1100	AA1200	AA3003	AA8006	AA8011
Fe	0.40	0.95	1.00	0.70	1.40 — 1.60	0.6 — 1.00
Si	0.25	(Fe Si)	(Fe Si)	0.60	0.02	0.5 — 0.90
Mg	0.05	–	–	–	0.02	0.05
Mn	0.05	0.05	0.05	1.0 — 1.50	0.4 — 0.50	0.20
Cu	0.05	0.05 — 0.20	0.05	0.05 — 0.20	0.05	0.10
Zn	0.05	0.10	0.10	0.10	0.05	0.10
Ti	0.03	–	0.05	0.1(Ti Zr)	0.03	0.08
Cr	–	–	–	–	–	0.05
Each(Others)	0.03	0.05	0.05	0.05	0.05	0.05
Total (Others)	–	0.15	0.125	0.15	0.15	0.15
Al	99.50	99.00	99.00	Remainder	Remainder	Remainder

Haomei Aluminium Fin Stock Surface and Appearance

1. Surface Condition

Cleanliness: The surface should be clean, free from dirt, oil, or other impurities.
Defects: The surface should be free from folds, scratches, or other visible defects.
Adhesives: There should be no residues of adhesives.
Color: The color should be uniform with no noticeable color variation.

2. Side Quality

Flatness: The sides should be flat, with no ripples or undulations.
Smoothness: The sides should be smooth, without cracks or blemishes.

Bare Aluminium Fin Stock

Bare aluminium fin stock is untreated aluminum foil with basic aluminum characteristics. Due to its untreated surface, it may be affected by oxidation and corrosion during use, but it still maintains good thermal conductivity.

Features

Thermal Conductivity: Maintains good heat transfer performance.
Surface Condition: The untreated surface may be affected by oxidation and corrosion.
Application: Commonly used in heat exchangers and radiators.

Hydrophilic Aluminium Fin Stock

Hydrophilic aluminium fin stock is aluminum foil treated with a hydrophilic coating that allows condensate to spread rapidly without forming droplets.

Features

Heat Exchange Efficiency: Increases heat exchange area and speeds up cooling and heating processes.
Noise Reduction: Effective in reducing airflow noise due to the absence of water droplet accumulation.
Protective Function: Provides additional corrosion and mildew protection.
Moisture Distribution: Ensures even distribution of condensed water on the surface, reducing thermal resistance buildup and improving heat exchange rate by about 5%.

Pre-coated Aluminum Fin Stock

Pre-coated Aluminum Fin Stock features a corrosion-resistant coating that prevents corrosion, and the lubricating layer in the coating extends the service life.

Thermal Conductivity: Provides good thermal conductivity.
Corrosion-Resistant Coating: The coating prevents corrosion during use and extends the service life.
Lubricating Layer: The lubricating layer in the coating improves formability and ease of processing into desired shapes and sizes.
Application: Suitable for room/combination air conditioners and heat exchangers in large refrigerators.

What are aluminum fins used for?

Automotive Radiators: Used to manufacture radiator fins for cars, enhancing cooling efficiency.
Heat Shields: Used in the production of heat shields to reduce heat loss.
HVAC Equipment: Produced for air conditioning heat exchangers, evaporators, condensers, etc., to improve thermal exchange performance.
Household Appliances: Applied in refrigerators, cooling equipment, etc., to enhance heat exchange and energy efficiency.

8011 O Aluminium Fin Stock for Air Conditioning

8011 O-grade aluminum foil is used for heat exchangers in air conditioning systems. It is made from 8011 aluminum alloy with O-temper (softened) treatment, making it suitable for air conditioning heat exchangers with good thermal conductivity.

Features:

Material: 8011 aluminum alloy, O-temper (softened), suitable for processing.
Application: Mainly used in heat exchangers within air conditioning systems.
Performance: Provides good thermal conductivity and durability.

3003 Pre-coated Hydrophilic Aluminum Fin Stock for Heat Exchanger

3003 Pre-coated Hydrophilic Aluminum Fin Stock features a hydrophilic coating that enhances heat exchange efficiency by reducing water droplet formation and improving heat dissipation.

Features:

Material: 3003 aluminum alloy with pre-coated hydrophilic layer.
Hydrophilicity: The coating allows condensed water to spread rapidly, reducing water droplet formation.
Application: Primarily used in various heat exchangers to enhance heat exchange efficiency.

8011 Pre-Coated Gold Color Aluminum Fin Stock for HVAC Heat Exchangers

8011 Pre-coated Gold Color Aluminum Fin Stock features a gold-colored coating that provides an attractive appearance while enhancing the protective properties of the aluminum foil, making it suitable for HVAC systems.

Material: 8011 aluminum alloy with pre-coated gold protective layer.
Appearance: The gold coating provides an aesthetically pleasing look and additional protection.
Application: Suitable for heat exchangers in HVAC systems, combining aesthetics with functionality.

8011 O Blue Pre-coated Hydrophilic Aluminium Fin Stock for Household Air Conditioner

8011 O-grade aluminum foil with a blue pre-coated hydrophilic layer ensures rapid dispersion of condensed water. The blue coating adds visual appeal and enhances heat exchange efficiency.

Material: 8011 aluminum alloy, O-temper (softened), with pre-coated blue hydrophilic layer.
Hydrophilicity: The coating allows condensed water to spread rapidly, preventing water droplet formation.
Appearance: The blue coating provides additional visual effects.
Application: Designed specifically for household air conditioning systems, improving both heat exchange efficiency and appearance.

Aluminium Fin Stock Production Process

Foil Rolling: Aluminum foil is produced through multiple rolling processes to form thin, flat metal sheets.
Alloy Selection: Uses 1000, 3000, and 8000 series aluminum alloys to meet different application needs.
Form: Aluminum fin stock is usually in coil form and can also be cut into strips as needed.

Aluminium Fin Stock Packaging and Storage

Packaging

Wooden Pallets: Packaged using fumigated or non-fumigated wooden pallets.
Wooden Cases: Fumigated or non-fumigated wooden cases can also be used for packaging, depending on the required method.

Storage

Environmental Requirements:

Cleanliness: The storage area should be clean, free from dust and dirt.
Dryness: Humidity should be kept below 65% to prevent the aluminum foil from moisture damage.
Non-corrosive Gases: The storage area should be free from corrosive gases to avoid chemical corrosion of the aluminum foil.

Protective Measures:

Rain and Snow Protection: The storage area should be protected from rain, snow, and other liquids to prevent moisture or corrosion.
Moisture Isolation: The storage area should be free from other sources of moisture or chemically active substances to maintain the dryness and stability of the aluminum foil.

Why Use Aluminum as Fin Material?

1. High Thermal Conductivity: Aluminum effectively conducts heat, enhancing the efficiency of heat exchangers.
2. Lightweight: Aluminum is lighter than many other metals, making it easier to handle and reducing the overall weight of the equipment.
3. Corrosion Resistance: Aluminum naturally forms a protective layer on its surface, offering strong corrosion resistance, suitable for humid or corrosive environments.
4. Easy to Process: Aluminum is easy to process, allowing for the manufacturing of complex fin designs through stamping, rolling, and welding processes.
5. Cost-Effective: Aluminum is generally cheaper than copper and stainless steel, making it a cost-effective choice.
6. High Recyclability: Aluminum is easily recyclable, environmentally friendly, and reduces environmental impact.

Aluminium Fin Stock Product Quality Testing

1. Alkaline Resistance Test

Tests the alkaline resistance of the surface coating of aluminum fins. The fins are immersed in a 20% NaOH solution for 3 minutes, then examined for any bubbling. This test ensures the coating can withstand alkaline cleaning agents.

2. Humidity and Heat Test

Tests the corrosion resistance of fins under specific temperature and humidity conditions. The fins are exposed to high temperature and humidity environments for an extended period to assess their weather resistance and corrosion tolerance.

3. Salt Spray Test

Conducts a salt spray test on fins in a 35°C, 3% saline solution environment. This test simulates harsh environments to evaluate the corrosion resistance of the fins.