Silver white, it can form a layer of oxide film to prevent metal corrosion in moist air, relative density 2.7g/cm3, melting point 660℃, boiling point 2327℃, high specific strength, good electrical and thermal conductivity, high reflection Resistance and oxidation resistance.

2. Type

Profile category: aluminum profile, aluminum pipe, aluminum bar, etc.

Sheet category: aluminum sheet, aluminum foil, aluminum strip (coil)

Casting category: aluminum castings, aluminum pellets

3. Commonly used grades

The first digit of the grade indicates the aluminum alloy series, the second digit indicates the modification of the original aluminum alloy, and the last two digits indicate the purity of the aluminum alloy in the same group.

1100: Good formability and high corrosion resistance are required for processing, but high-strength parts are not required. For example, storage containers, thin plate processing parts, deep-drawn concave vessels, heat exchangers, printing plates, nameplates, reflective appliances, etc.

2011: Free-cutting alloy, good machinability and high strength, but poor corrosion resistance, suitable for volume shafts, optical components, screw heads, screws and machined products that require good cutting performance.

3003: It has the properties of 1xxx series alloys and has higher strength than 1xxxx series alloys, such as kitchen utensils, food and chemical product processing and storage devices, tanks and tanks for transporting liquid products, and various pressure vessels and pipes for thin plate processing.

4A01: High silicon content, heat-resistant, wear-resistant, belonging to construction materials, mechanical parts, forging materials, and welding materials.



5052: The most representative alloy with medium strength (5083 is the highest), with good corrosion resistance, weldability and formability, especially high fatigue strength and good seawater resistance. It is used in the manufacture of aircraft fuel tanks, oil pipes, and transportation vehicles. Ship sheet metal parts, instruments, street lamp brackets and rivets, hardware products, etc.

6061: Heat-treated corrosion-resistant alloy. T6 treatment can have a very high endurance value, but the welding interface strength is low, so it is suitable for screws, ships, vehicles, and land structures.

6N01: A medium-strength extrusion alloy, which can be used as a large-scale thin-meat profile with complex shapes, with good corrosion resistance and welding properties. It is suitable for vehicles, land structures and ships.

6063: A representative alloy for extrusion. Its strength is lower than 6061. It has good extrudability and can be used as profiles with complex cross-sectional shapes. It has good corrosion resistance and surface treatment. It is suitable for building highway guardrails, vehicles, furniture, and home appliances. Products, decorations.

7072: Low electrode potential, mainly used for anti-corrosion covering leather materials, but also suitable for heat sinks of heat exchangers, aluminum foils for air conditioners and ultra-thin strips.

7075: One of the alloys with the highest strength among aluminum alloys, but the corrosion resistance is not good. The covering skin with 7072 can improve its corrosion resistance, but the cost is increased. Suitable for aircraft, ski poles, thick plates and forged products.

Material selection examples:

The product requirements are relatively hard, and the surface treatment is coarse wire drawing or coarse sand surface. Choose 5000 series aluminum alloy, commonly used: 5052

For products with high requirements for surface treatment, there should be no sand holes and profile traces. Choose 6000 series aluminum alloy, commonly used: 6063/6061

The product requires a low price, and it needs to be stretched and re-examined. The 2000 series pure aluminum is selected. Commonly used: 2011

The product has high strength and high hardness, and it needs to be used for load-bearing structure. Choose 7000 series aluminum alloy, commonly used: 7075

4.Surface treatment of aluminum

1. Anodized after sandblasting or wire drawing

2. Electrophoresis painting

3. Powder electrostatic spraying and fluorocarbon spraying after polishing

4. Electroplating after polishing the mirror

5. Wood grain heat transfer

6. Polymer PVC film


5.Aluminum profile

Aluminum profiles are aluminum rods that are melted and extruded to obtain aluminum tubes with different cross-sectional shapes. The forming process mainly includes 5 processes including melting, extrusion, cutting, CNC washing and cutting, surface pretreatment, and coloring.
Titanium plating and electrophoresis are the most expensive, followed by wood grain thermal transfer, anodizing, and finally spraying. The specific price is subject to the manufacturer's quotation.

The main applications of aluminum profiles are as follows:

1. Building aluminum profiles (doors and windows, curtain walls)

2. Radiator aluminum profile

3. General industrial aluminum profiles: Mainly used in industrial production and manufacturing, such as automated machinery and equipment, skeletons, etc., which can be customized by mold opening.

4. Aluminum alloy profile for rail vehicle structure: mainly used in the manufacture of rail vehicle body.

5. Decorate aluminum profiles, make aluminum alloy frames, mount various decorative paintings.

6. Appearance aluminum profiles, mainly used in home appliances or communication industries, such as mobile hard drives, mobile power supplies, televisions, monitors and other internal structures and exterior decorations.

Six, aluminum sheet
Aluminum sheet 0.15-2.0mm
Conventional board (aluminum sheet) 2.0-6.0mm
Aluminum plate 6.0-25.0mm
Aluminum plate 25-200mm
Super thick board above 200mm

Single layer aluminum plate

It can be used for electronic product shells, home appliance product shells or internal thermal conductive parts, etc.
The finished aluminum shell is stretched and formed by a metal stamping die, surface pretreatment, and coloring are completed in three processes.
Polymer film aluminum plate
The forming slope is required, not easy to stretch, the material is not suitable for corrosion, super weather resistance, various colors, easy maintenance, etc.
Suitable for housings of electronic products, home appliances, etc.

Aluminum-plastic composite panel
It is a new type of material that has been surface-treated and coated with a baking varnish as the surface, mixed with polyethylene and polypropylene plastic as the core layer, and processed through a series of processes.
It can be applied to the decoration of curtain walls, interior and exterior walls, entrance halls, restaurants, shops, meeting rooms, etc., and can also be used for the reconstruction of old buildings, as counters, furniture surfaces, and interior and exterior walls of vehicles.

Honeycomb aluminum plate
It adopts a composite honeycomb structure, which is formed by hot-pressing composite forming of a pre-formed box-shaped panel and back plate and an aluminum alloy honeycomb core material.
It is suitable for building curtain wall decoration, ceilings, buses, trains, subways and rail transit vehicles, commercial transport vehicles and container truck bodies, shipbuilding, billboards, and interior decoration projects.

Use aluminum as the decorative shell of the product, with a high stretch surface, the material is generally 0.4-0.8mm in thickness, grade 6063/6061 or pure aluminum.

Use aluminum as a functional shell, with a bottom stretched and bent structure. The material is generally 0.8-1.2 thickness. Choose harder grades 5052/7075 or special grades.

When aluminum parts are used on the shells of electronic products, the laser-engraved oxide layer is required to be conductively grounded, because the oxide layer is not conductive after anodization.

Seven, aluminum alloy die casting

In the structural design of aluminum alloy die-casting parts, the structure with inclined roof should be designed as little as possible to prevent the subsequent removal of the front and burrs from being difficult.

In the structural design of aluminum alloy die castings, it is also necessary to pay attention to the average thickness of the glue and the smooth flow of the glue, which can reduce a lot of problems such as poor appearance due to molding and increase subsequent polishing review.

If you choose a softer grade, you still need to consider the strength of the structure when designing the load-bearing structure, otherwise it will break easily.