Teflon Coated Aluminium Disc Circle

"Teflon Coated Aluminium Disc" refers to a material in which a Teflon (Polytetrafluoroethylene, PTFE) layer is coated onto an aluminum disc substrate.

The Teflon coated aluminum disc is a high-performance composite material formed through a special curing process, combining the lightweight and excellent thermal conductivity of aluminum with the non-stick and corrosion-resistant properties of Teflon.

Thanks to its unique composite performance, the Teflon coated aluminum disc has become an indispensable material in modern industry and daily life. With the development of environmentally friendly Teflon coating technologies (such as PFOA-free coatings), its application areas will further expand, providing more industries with efficient and eco-friendly surface solutions.

Haomei Aluminum produces Teflon coated aluminum discs that perfectly combine the lightweight, high-strength characteristics of aluminum with the excellent non-stick and corrosion-resistant performance of Teflon. We carefully design these discs to ensure smooth surfaces, easy cleaning, and high durability, meeting the requirements of various demanding applications. Whether used in cookware manufacturing, industrial molds, or other precision forming processes, Haomei Aluminum's Teflon coated aluminum discs offer uniform thickness, superior thermal conductivity, and long-term reliability, providing customers with stable and efficient solutions.

Teflon Coated Aluminium Disc Circle Specifications

Feature	Standard Range
Diameter	100 mm to 1, 200 mm (approx. 4" to 47")
Thickness	0.3 mm to 6.0 mm
Common Alloys	1050, 1100 (pure), 3003 (standard), 5052 (high strength)
Temper	O (soft/annealed), H12, H14, H24
Color	Usually Black, Grey, or Dark Brown
Coating Thickness	15μm~80μm
Surface Finish	Matte, Semi-Matte, High Gloss
Tolerance Control	Diameter ±0.1mm, Thickness ±0.02mm

Teflon Coated Aluminium Disc Circle Structure and Material Selection

Component	Common Materials	Core Properties
Substrate	1050/1060/1100 pure aluminum, 3003 aluminum alloy	Excellent thermal conductivity, lightweight, easy to process, moderate cost
Coating	PTFE (standard Teflon), PFA (melt-processible PTFE), FEP (fluorinated ethylene-propylene)	Non-stick, high and low temperature resistance, chemical inertness, low friction coefficient
Pretreatment Layer	Phosphoric anodizing, sandblasting, chemical etching	Enhances coating adhesion, prevents peeling

Teflon Coated Aluminium Disc Circle Features

Aluminum, as the substrate (e.g., aluminum sheet or pan), has the core advantage of excellent thermal conductivity. The Teflon coating provides the following key properties, making it widely used in both industrial and daily applications.

Non-stick surface: The smooth Teflon coating ensures very low adhesion, making demolding easy.
High thermal conductivity: Aluminum ensures fast and even heat transfer, preventing "hot spots" during cooking or industrial heating.
Corrosion and chemical resistance: PTFE coating protects aluminum from oxidation and reacts minimally with most acids and bases.
High temperature resistance: Most coatings can be used continuously up to 260°C (500°F).
Formability: These discs are usually made from alloys like 3003 or 1100, which are ideal for deep drawing or spinning into shapes such as pots or bowls, without cracking.
Uniform thickness: Ensures stable performance in stamping, forming, or cooking applications.
Lightweight yet strong: Combines the strength of aluminum with the protective properties of Teflon.
Customizable sizes and alloys: Available in various diameters, thicknesses, and aluminum grades.
Chemical stability: Resistant to strong acids and bases, organic solvents, and nearly insoluble in all chemical media.
Low friction coefficient: Extremely low surface friction reduces material adhesion and wear.
Insulation properties: Teflon coating is an excellent insulator, suitable for electrical applications.

Teflon Coated Aluminum Disc Circle Applications

Cookware and Kitchen Appliances

Due to their non-stick, corrosion-resistant, and excellent thermal conductivity properties, Teflon coated aluminum discs are widely used in various kitchen products. Common items include frying pans, woks, stew pots, electric frying pans, flat pans, baking trays, and molds. Aluminum provides lightweight and rapid heat conduction, while the Teflon coating ensures food does not stick, is easy to clean, and heats evenly.

Teflon Coated Aluminum Disc Circle for Cookware and Kitchen Appliances

Electronic and Electrical Components

Teflon coated aluminum discs are also suitable for electronic product manufacturing, especially in applications requiring lightweight, heat resistance, or partial electrical insulation. For example, they can be used in LED heat sinks, reflectors, or electromagnetic shielding and housings for specialized equipment. The coating prevents aluminum oxidation while maintaining good heat dissipation.

Teflon Coated Aluminum Disc Circle for Electronic and Electrical Components

Decorative and Functional Panels

Teflon coated aluminum discs can also be used in architectural decoration and high-wear scenarios, such as ceilings, wall claddings, signage, and interior components of vehicles. The coating is not only scratch-resistant but also has a low-friction surface that requires minimal maintenance.

Teflon Coated Aluminum Disc Circle for Decorative and Functional Panels

Industrial Molds and Forming Tools

In industrial production, these aluminum discs are often used as precision molds or forming surfaces, such as plastic thermoforming molds, rubber pressing plates, and die-casting molds. The smooth Teflon surface reduces friction, prevents material adhesion, extends mold life, and improves production efficiency.

Teflon Coated Aluminum Disc Circle Production Process

Manufacturing Process

Stamping: Punching circular aluminum sheets from large aluminum coils or plates.
Surface Treatment: Cleaning the aluminum, sometimes etching or sandblasting, to ensure the Teflon coating adheres firmly.
Coating: Usually applied by roller coating (for large-scale production) or spraying PTFE.
Curing: Heating the aluminum sheets in industrial ovens to "sinter" the Teflon, forming a hard and durable non-stick coating.

Substrate Pretreatment

Degreasing: Use a phosphoric solution (15%~20%) to remove the aluminum oxide layer and grease.
Surface activation: Increase surface roughness via sandblasting or chemical etching to form an "anchoring" structure.
Ultrasonic cleaning: Thoroughly remove residual impurities to ensure a clean surface.

Coating Application

Electrostatic spraying: Suitable for thick coatings (50~100μm), ensuring good uniformity.
Dipping: Suitable for thin coatings (10~30μm), cost-effective.
Electrostatic powder coating: Environmentally friendly, solvent-free, with dense coating quality.

Curing Treatment

Pre-drying (80℃~120℃): Remove solvents from the coating.
High-temperature curing (380℃~420℃): Melt Teflon particles into a film and bond firmly with the substrate.
Cooling and shaping: Ensure coating hardness and stability.

Teflon Coated Aluminum Disc Circle Advantages and Disadvantages

Advantages	Disadvantages
Strong non-stick, easy to clean, reduces detergent usage	Low coating hardness (2~4H), not resistant to sharp scratches
Uniform heat transfer, excellent cooking performance, energy-saving	Long-term high-temperature (>260℃) use may release harmful substances
Lightweight and portable, easier to handle than stainless steel products	Limited lifespan (typically 2~5 years under normal use), requires replacement
Good chemical stability, resistant to rust and corrosion	Difficult to repair, coating damage is hard to fix
Wide applicable temperature range, suitable for both hot and cold environments	Higher cost than ordinary aluminum products (approx. 30%~80% premium)

Teflon Coated Aluminum Disc Circle Purchasing and Usage Notes

Purchasing Tips

Confirm coating type: For food contact, prioritize PTFE/PFA certified products (compliant with FDA, LFGB standards)
Check coating uniformity: Surface should be free of bubbles, pinholes, and sagging
Pay attention to substrate thickness: Too thin may deform, too thick affects heat conduction efficiency

Usage Recommendations

Avoid using metal spatulas, steel wool, or sharp tools; silicone or wooden utensils are recommended
Keep cooking temperature ≤260℃, avoid dry burning (may damage coating and release toxic substances)
Clean with a soft cloth + neutral detergent, rinse with warm water
Store without heavy pressure to prevent coating cracking

Safety Tips

Choose products from reputable manufacturers to ensure the coating does not contain harmful substances like PFOA (perfluorooctanoic acid)

If the coating is damaged, replacement is recommended to avoid direct contact of aluminum with food

Is Teflon Coated Aluminum Safe?

Teflon-coated aluminum is generally safe in most cases, but its safety depends on several factors, including the usage environment and the condition of the coating.

Usage Environment

High-Temperature Environment: Teflon coatings can withstand high temperatures, but when temperatures exceed 260°C (500°F), the coating may start to degrade and release harmful gases. Therefore, it is crucial to ensure that the coating is used within its temperature range.
Chemical Environment: Teflon has good chemical corrosion resistance, but it should be kept away from strong acids or strong alkalis, as these can damage the coating.

Coating Condition

Coating Integrity: Ensure that the coating is not damaged, scratched, or peeling. If the coating is compromised, the aluminum substrate may be exposed, leading to corrosion or other issues.
Cleaning and Maintenance: Proper cleaning and maintenance help maintain the integrity and performance of the coating. Avoid using abrasive cleaning tools or strong acids and alkalis for cleaning.

Food Safety

Food-Grade Coating: Teflon coatings are widely used in cookware and are generally food-grade, which means they do not pose a hazard to food. Ensure that the Teflon coating used complies with standards for food contact materials.