Custom 6061 Aluminum Extrusion Manufacturer

Yes. 6061 aluminum extrusion is suitable for complex and thick-wall profiles, especially for industrial and structural applications. While it is more challenging to extrude than decorative alloys, proper die design and process control allow 6061 to be used for custom cross sections requiring higher strength and post-machining.

Yes. 6061 aluminum extrusions can be supplied in T5 or T6 temper. T6 extrusions undergo solution heat treatment followed by artificial aging, providing higher mechanical strength and better dimensional stability for load-bearing and precision-machined components.

6061 aluminum extrusion offers higher mechanical strength and better suitability for structural and machined components compared with 6063. While 6063 provides superior surface finish for architectural applications, 6061 is preferred when strength, load-bearing capacity, and post-machining performance are required.

6061 provides a balanced combination of strength, machinability, and corrosion resistance. Compared with 6005 and 6028, 6061 generally offers better machinability and broader application flexibility, while 6005 and 6028 are often selected for specific structural profiles where higher stiffness or extrusion efficiency is required.

7075 aluminum alloy offers significantly higher mechanical strength and is widely used in military, aerospace, and high-stress structural applications. However, it is less suitable for aluminum extrusion, especially for complex profiles, and has lower corrosion resistance.

2024 aluminum alloy is known for its excellent fatigue resistance and is commonly used in aircraft structures and high-speed rail components. Similar to 7075, it is more challenging to extrude and is typically selected for applications where fatigue performance is the primary requirement.

Compared with these high-strength alloys, 6061 aluminum extrusion provides a more balanced combination of strength, corrosion resistance, weldability, and manufacturability, making it the preferred choice for most industrial and structural extrusion applications.

Aluminum extrusions undergo various surface treatments to enhance aesthetics, corrosion resistance, and functionality. Here are the common surface treatment methods used in the industry:

Main Surface Treatment Methods

1. Anodizing (Oxidation)

   • Process: A controlled electrochemical process that forms a protective oxide layer on the aluminum surface.
   • Features:
     • Provides a durable, corrosion-resistant, and environmentally friendly finish.
     • Produces a metallic finish with a variety of natural tones (e.g., silver, black, bronze).
     • Improves surface hardness and protects against scratching.
   • Applications: Architectural frames, decorative profiles, heat sinks.

2. Electrophoresis Coating (E-Coating)

   • Process: After anodizing, the aluminum is coated with paint using an electrochemical process.
   • Features:
     • Enhances corrosion resistance and offers a smooth, glossy finish.
     • Provides more color and texture variation compared to anodizing alone.
   • Applications: Furniture profiles, indoor architectural components.

3. Powder Coating

   • Process: Electrostatic application of powder paint, followed by curing under high temperature to form a solid coating.
   • Features:
     • Wide variety of colors and textures.
     • Excellent weather resistance and corrosion protection.
     • Cost-effective and highly versatile.
   • Applications: Outdoor frames, fences, railings, general industrial use.

4. PVDF Coating (Polyvinylidene Fluoride)

   • Process: A specialized fluoropolymer coating is applied in multiple layers, commonly over a pretreated surface.
   • Features:
     • Exceptional weather resistance and UV stability.
     • Highly durable, resistant to fading, chalking, and chemical damage.
     • Ideal for long-term outdoor use.
   • Applications: Curtain walls, high-performance architectural facades.

5. Wood Grain Transfer Printing

   • Process: A heat-transfer printing process that applies a wood grain effect onto a pre-coated aluminum surface.
   • Features:
     • Mimics the appearance of wood while retaining aluminum’s durability.
     • Lightweight and weather-resistant alternative to natural wood.
   • Applications: Furniture, decorative coverings, outdoor panels.

6. Film Lamination

   • Process: Adhesive application of a protective or decorative film onto the aluminum surface.
   • Features:
     • Provides a glossy, textured, or patterned finish.
     • Often used for applications requiring specific textures like marble or leather effects.
   • Applications: Interior decor, windows.

Pre-Treatment Processes

Prior to surface treatment, the aluminum surface can be pre-processed for specific textures or finishes:

1. Brushing/Polishing

   • Removes surface imperfections and creates a smooth, reflective finish.
   • Often used for decorative purposes.

2. Sanding/Grinding

   • Produces a matte or satin finish by applying abrasives.

3. Shot Blasting/Sandblasting

   • Sprays abrasives at high velocity to create a textured surface, often used before anodizing for a uniform appearance.

4. Stretching and Tension Leveling

   • Straightens the aluminum profile and improves shape accuracy after extrusion.

Cost and Durability Comparison Table

. Anodizing (Oxidation)

• Common Colors:
  Natural silver
  Black
  Champagne
  Light bronze
  Dark bronze
  Gold

2. Electrophoresis Coating (E-Coating)

• Common Colors:
  Black
  Champagne
  Light bronze
  Dark bronze
  Custom metallic colors

3. Powder Coating

• Colors:
  Can match any color based on the RAL color chart.
  Offers textures like matte, gloss, satin, and custom finishes.

4. PVDF Coating (Polyvinylidene Fluoride)

• Colors:
  Also customizable using the RAL color chart.
  High-end finishes with matte or glossy effects.

5. Wood Grain Transfer Printing

• Colors and Patterns:
  Mimics various wood types (e.g., oak, walnut, teak, mahogany).
  Custom patterns available based on provided samples.

6. Film Lamination

• Colors and Patterns:
  Includes textures like marble, leather, and solid colors.
  Custom finishes and patterns based on provided samples.

Pre-Treatment Options (Impact on Final Color)

• Brushing/Polishing: Produces smooth or reflective metallic surfaces.
• Sandblasting: Adds a rough, matte texture before the final surface treatment.

We provide a wide range of machining services for aluminum extrusions to meet specific requirements. These include cutting off/section removal, slotting, drilling holes, tapping threads, bending, and localized stamping to create deformations. For example, we can trim extruded profiles to custom lengths, mill precise grooves, create threaded holes for fasteners, bend profiles into specific shapes, or apply localized stamping to achieve custom forms or deformation.

In addition to these processes, we also offer TIG/MIG welding to join aluminum components for a solid structure. Furthermore, our services include assembly of common accessories, such as brackets, corner connectors, screws, hinges, end caps, and rubber seals, providing complete and ready-to-install profile solutions tailored to your project needs. This ensures that we can handle everything from simple cuts to highly customized fabrication and assembly, all with precision and efficiency.

For custom aluminum extrusion projects, we accept a variety of drawing formats, including CAD files, STEP files, and PDF files. However, for extrusions that require additional machining processes, it’s recommended to provide STEP files, as they ensure precise 3D modeling for machining accuracy.

While PDF files are acceptable, converting them into CAD drawings may result in the loss of certain details, requiring us to manually redraw the design, which could increase lead time. For the fastest and most accurate quotation, we recommend providing CAD files (e.g., DWG/DXF) and STEP files to ensure efficient design evaluation and pricing.

Mold fees are an essential part of the custom aluminum extrusion process. Since every order requires a uniquely designed mold tailored to specific requirements, these molds cannot be used for other products. Therefore, the mold fee is necessary and non-negotiable.

We require 100% upfront payment of the mold fee before mold development begins to ensure timely production. However, as a token of appreciation for your support, we offer a refund of the mold fee or equivalent discounts once the order reaches a certain production volume. Specific policies can be discussed based on your order volume and collaboration details.

Our minimum order quantity (MOQ) varies depending on the size of the product. For smaller-sized products, the MOQ is typically 500kg, while for larger-sized products, it is 2 tons.

We will specify the exact MOQ requirements during the quotation process. If your order quantity does not meet the MOQ, we can still arrange production, but an additional fee will be applied to cover mold preheating and production setup time. Rest assured, this extra fee will be reasonable, and we aim to keep it as minimal as possible to ensure smooth cooperation.

Packaging can be customized according to your needs. Options include using protective film or paper to separate and protect the surface, or foam film for additional surface protection. Products can be palletized or packed into cartons, and the quantity per pallet or carton can be specified by the customer.

The standard packaging involves bundling several pieces together with plastic wrap and then securing them onto pallets. Any packaging requirements beyond the standard will be accommodated, and the associated costs will be clearly provided to the customer.

Mold production typically takes 7 days. After the sample is confirmed, producing a full container load of 26 tons generally requires 14 days for extrusion alone. If surface treatment is required, an additional 3 days will be needed. For machining, extra time will be required depending on the complexity and volume of the machining work. The exact additional time for machining will be determined based on the specific processing requirements.

Aluminum profiles are naturally corrosion-resistant due to the formation of a thin, protective oxide layer when exposed to air or water. This oxide layer is stable and self-repairing, meaning that even if the surface is scratched or cut (such as at exposed ends or during processing), the aluminum will not rust or corrode like iron or steel. Instead, the exposed areas will quickly form a new oxide layer, providing continuous protection against further oxidation.

With proper design, installation, and maintenance, aluminum profiles can last for decades, even in challenging environments. For example, untreated aluminum can easily withstand 20-30 years in outdoor applications, while profiles with surface treatments like anodizing or powder coating can last even longer, often exceeding 50 years. This makes aluminum an excellent choice for applications where durability and long-term performance are essential.

The price of aluminum profiles consists of several components: raw material costs, extrusion processing fees, surface treatment fees, machining costs, and additional packaging fees. Among these, the cost of aluminum as a raw material tends to fluctuate frequently, while other fees remain relatively stable. Due to these fluctuations, our quotations are typically valid for 7 days.

Pricing can be structured in different ways depending on the product and requirements. It can be calculated by weight (e.g., cost per ton), by length (e.g., cost per meter), or by piece (e.g., cost per unit). For products involving extensive machining, such as heat sinks, pricing is generally calculated on a per-piece basis to accurately reflect the additional processing costs. This flexible pricing approach ensures the quote is tailored to the specific needs of the customer.

Our production equipment is designed for the metric system. If the drawings provided are in the imperial system, we will convert them into metric units for production to ensure accuracy.

It is important to note that while we can machine imperial-threaded holes for fasteners, if you require us to supply matching imperial fasteners, they may not always be available in stock. Custom orders for imperial fasteners typically require a large volume for production. Please consider this when planning your project.