Aluminum profiles for doors and windows are the main material for building door and window frames, made primarily from aluminum-magnesium-silicon alloys (mainly 6-series, such as 6063-T5) through extrusion molding. Aluminum profiles for doors and windows possess excellent wind pressure resistance and mechanical strength, are flame-retardant, and exhibit strong weather resistance and are not prone to rusting or fading after surface oxidation or spraying treatment. They are widely used in various door and window systems in residential and commercial buildings, including casement, sliding, and folding models, and are currently the most widely used base material for building doors and windows.
Classification of Aluminum Profiles for Doors and Windows:
Aluminum profiles for doors and windows are mainly classified according to four dimensions: structural process, alloy grade, surface treatment, and specification series. Among these, structural process is the core standard for distinguishing performance.
1. Classification by Structural Process (Core Classification)
– Ordinary Aluminum Alloy Profiles: These have no thermal break structure; aluminum conducts heat directly, resulting in poor thermal insulation performance. They are suitable for interior windows with low energy-saving requirements or older buildings.
– Thermally broken aluminum profiles: PA66 nylon thermal insulation strips are embedded between the inner and outer layers of aluminum profiles to block heat conduction channels. They are divided into strip-insulated type (mainstream, high mechanical strength) and glue-injected type (early technology, now less common). Their thermal insulation and energy-saving performance is significantly better than ordinary profiles, making them the mainstream choice for home decoration.
– Aluminum-wood composite profiles: The outer layer is made of weather-resistant aluminum alloy, and the inner layer is made of solid wood decoration, combining the strength of metal with the beauty of wood. They are often used in high-end villas or buildings with specific styles.
2. Classification by Alloy Material
– 6063-T5/T6: The most mainstream base material in the door and window industry, belonging to the aluminum-magnesium-silicon alloy system. It has good corrosion resistance and is easy to extrude. T5/T6 represents the heat treatment state, affecting strength.
– Other grades: such as 6061 (higher strength, used for special structures), 1024, etc., but ordinary doors and windows rarely use high-cost aerospace-grade alloys.
3. Classification by Surface Treatment Process
– Anodizing: Forms an oxide film on the surface, mostly silver-white or bronze in color, corrosion-resistant but with limited color options.
– Powder Coating: Rich in colors, good weather resistance, cost-effective, and the most common in the market.
– Fluorocarbon Coating: Extremely weather-resistant and UV-resistant, often used in high-rise curtain walls or highly corrosive coastal environments, but expensive.
– Electrophoretic Coating: Smooth and delicate surface, strong stain resistance, and high-end texture.
– Wood Grain Transfer: Simulates wood grain texture, meeting the needs of wood-look decoration.
4. Classification by Specification Series
– Definition: The series number represents the width of the profile cross-section in millimeters (e.g., 70 series means a frame width of 70mm).
– Common Window Series: 55, 60, 65, 70, 75, 80, 90 series, etc. The higher the number, the more complex the cavity usually is, and the higher the sound and heat insulation potential.
– Common door series: 70, 80, 90, 100 series, etc. Due to the greater stress on doors, the series number is generally larger than that of windows.
– Wall thickness requirements: According to the new national standard GB/T 8478-2020, the actual measured wall thickness of the main profile of exterior windows should be ≥1.8mm (old standard was 1.4mm), and for doors ≥2.0mm. Be wary of falsely advertised thicknesses when purchasing.
Purchase tips: Prioritize combinations of thermally broken aluminum alloy + PA66 thermal break strip + 6063-T5 alloy + powder/fluorocarbon coating. Confirm the wall thickness meets the standard based on the floor’s wind pressure, rather than blindly pursuing larger series numbers.
Features of Aluminum Profiles For Doors and Windows:
Aluminum Profiles For Doors and Windows use aluminum-magnesium-silicon alloy (6 series) as the main base material, possessing core characteristics such as high strength, lightweight, corrosion resistance, and ease of processing, making it the mainstream choice for modern building doors and windows.
1. Excellent Mechanical Properties: High tensile strength (typically ≥160 MPa), strong wind pressure resistance, and resistant to deformation, making it suitable for large-area lighting and high-rise buildings.
2. Weather and Corrosion Resistance: After anodizing, powder coating, or fluorocarbon treatment, a dense oxide film is formed, resisting acid and alkali corrosion. The service life can reach 20-30 years, and it is not prone to fading.
3. Flame Retardant and Environmentally Friendly: Aluminum alloy is a non-combustible material with excellent fire resistance; the material is 100% recyclable, meeting green building standards.
4. High Processing Precision: Utilizing extrusion molding technology, the cross-sectional dimensions are precise (high-precision tolerance controlled within ±0.08mm), adaptable to complex hardware accessories and sealing structures.
5. Thermal Insulation Bridge Design: By embedding PA66 nylon thermal insulation strips to cut thermal bridges, heat conduction is significantly reduced, and the heat transfer coefficient (K-value) can be reduced to 2.0-3.5 W/(㎡·K), solving the problem of rapid heat conduction in ordinary aluminum materials.
6. Excellent Sealing System Compatibility: The profile cavity structure supports multi-seal designs (such as triple seals), combined with an equal-pressure drainage structure, achieving high airtightness and watertightness, effectively preventing wind and sand damage and leakage.
7. Diverse Decorative Options: Supports various surface treatments such as two-tone customization and wood grain transfer, meeting the aesthetic needs of modern architecture.
Note: Ordinary non-thermal-insulated aluminum profiles have fast thermal conductivity and poor insulation, only suitable for scenarios with low energy-saving requirements; currently, mainstream high-performance doors and windows all use thermally broken aluminum profiles.
Applications of Aluminum Profiles for Doors and Windows:
Aluminum profiles for doors and windows are the core skeletal material for building doors and windows. Their main uses are to form the frames, sashes, mullions, and accessories of doors and windows, achieving structural support and functional integration through extrusion molding.
Core Structural Uses
1. Main Load-Bearing Frame: As the main body of window frames, door frames, and window sashes, aluminum profiles for doors and windows bear their own weight and wind loads, ensuring the overall structural stability.
2. Functional Component Construction: Aluminum Profiles For Doors and Windows are used to construct auxiliary components such as vertical mullions, mullions (connecting multiple doors and windows), glazing beads (fixing glass), and drainage covers.
3. Hardware Mounting Base: Aluminum Profiles For Doors and Windows provides mounting slots for hardware accessories such as handles, hinges, and locking points, ensuring flexible opening and secure locking.
Performance Applications
1. Thermal Insulation and Energy Saving: In thermally broken aluminum profiles, Aluminum Profiles For Doors and Windows uses built-in PA66 nylon thermal insulation strips to block thermal bridges, significantly reducing heat conduction and meeting building energy efficiency standards.
2. Sealing and Protection: Aluminum Profiles For Doors and Windows, combined with a multi-layer sealing strip design, forms airtight and watertight cavities, achieving windproof, waterproof, dustproof, and soundproof functions.
3. Decorative Enhancement: Aluminum Profiles for Doors and Windows feature powder coating, fluorocarbon coating, or wood grain transfer finishes, offering rich colors and textures to suit various architectural styles.
Applicable Scenarios
1. Building Types: Aluminum Profiles for Doors and Windows are widely used in exterior windows and entrance doors of residential, office, and commercial buildings.
2. Environmental Adaptability: With its corrosion resistance and wind pressure resistance, Aluminum Profiles for Doors and Windows are suitable for harsh environments such as coastal high-salt spray, northern extreme cold, and high-altitude winds.
| Item | ALUMINUM PROFILE | ||||||
| Aluminum alloy | 6061/6063 aluminium alloy | ||||||
| Temper | T4 | T5 | T6 | ||||
| Size/Thickness | General profiles thickness from 0.8 to 5.0mm,length from 3m-6m or customized available;Anodize protection film thickness from 8~25um,powder coating from 40～120 um. | ||||||
| Shape | Square | Round | Rectangular | Customized | |||
| Application | In furniture,windows&doors,decorations,industry,construction and so on | ||||||
| Finishes | Anodizing, Electrophoretic Coating, Powder Coating, Wood Grain Transfer, etc. | ||||||
| Surface treatment | powderc oating | electrop horesis | wood grain | anodized | Brushed | Brushed | |
| Colors | Customized;Ref powder coating color sheet and customized color available | ||||||
| Deep process | CNC | Drilling | Milling | Cutting | Welding | bendin g | assembling |
