aluminum mill finish

Mill finish aluminium means the extrusion products without any surface treatment; Common Mill finish aluminium metal are aluminum sheet, aluminum plate, aluminum coil, aluminum foil, aluminum disc/circle, aluminum checkered/tread plate, aluminum embossed coil/sheet etc.

The 2 main reasons for choosing Mill finish aluminum:

Aluminum is versatile and relatively low-cost. It has a high strength-to-weight ratio and possesses non-corrosive properties. It is environmentally friendly and can accept high-performance coatings.

Reason #1: Finishes can improve corrosion resistance.

Aluminum has a naturally occurring oxide film that protects it from corrosion. This oxide film is sufficient for many applications. But in extreme environments, extra protection may be needed.

Reason #2: Finishes can enhance the appearance of the aluminum.

Depending on the look you are trying to achieve, you will need to select the appropriate finish. Maybe you want something that’s brightly colored. Maybe you’re trying to achieve a “mirror” finish. You need to choose a finish that will give you the look you want to achieve.

What is meant by “Mill Finish”?

“Mill Finish” is the term that Tigers aluminum uses to describe its aluminum trims that have no finish applied to them. It is raw aluminum from our mill and it can be field primed and painted. Typically, Mill Finish has a shiny or “mirror-like” appearance with some visible manufacturing lines.

What is meant by “Mill Finish” is aluminum in its original form and appearance as its comes directly from the rolling mill or an aluminum extrusion mill.

Here are 6 different types of finishes for extruded aluminum:

  • #1 Mechanical Finishes.
  • #2 Pretreatment. The aluminum is either etched or cleaned with alkaline or acidic materials.
  • #3 Bright Dipping.
  • #4 Anodizing.
  • #5 Liquid Paint.
  • #6 Powder Coating.
  • #7 Sublimation.

Here are some of the mill finish aluminium sheets produced by Tigers aluminium to help you have a better understanding.

3003 h14 aluminum sheet
6082 aluminum suppliers T6 temper

6082 aluminum suppliers T6 temper

6082 aluminum alloy is an alloy in the wrought aluminium-magnesium-silicon family.It is one of the more popular alloys in 6000 series (alongside alloys 6005, 6061, and 6063). It is not used in casting, It cannot be work hardened.

6061 t6 aluminum plate
6061 aluminum sheet

6061 aluminum sheet

6061 aluminum sheet have 0.8%-1.2% magnesium. Tigers aluminum can provide you 6061 aluminum sheet with reliable quality and prompt delivery. Common specifications are in stock. Special sizes can be customized according to clients requests.

cutting edge without burrs of aluminum sheet
5754 aluminum sheet plate

5754 aluminum sheet plate

Alloy 5754 aluminum sheets & plates are magnesium-aluminum alloys. Typical uses include automotive body panels, shipbuilding, treadplate, vehicle bodies, rivets, fishing industry equipment.

3mm aa1050 h14 aluminum sheet
5083 Aluminum Sheet Plate

5083 Aluminum Sheet Plate

5083 aluminum sheet is a medium strength, composed mainly of aluminum, magnesium and manganese.5083 aluminium metal sheet and plate has the highest strength of the non-heat treatable alloys.

3mm aa1050 h14 aluminum sheet
3105 Aluminum Sheet

3105 Aluminum Sheet

Alloy 3105 aluminum sheet plate is 98% pure premium aluminum alloy metal, strength over that of alloy 1100 and 3003 aluminum sheet. The commonly used alloy tempers are H14, H22, H24, H26 etc.

5754 aluminum plate
3004 Aluminum Sheet

3004 Aluminum Sheet

The main alloying addition of 3004 aluminum sheet alloy is manganese. 3004 alloy metal has higher strength than 3003 aluminum sheet, and good corrosion resistance. It is commonly rolled and extruded, but typically not forged, not used in casting.

aluminum sheet interleaved with paper
3003 Aluminum Sheet

3003 Aluminum Sheet

3003 aluminum sheet is pure aluminum with manganese added, it is an antirust alloy. H14 temper is the usual state. The density of 3003 aluminum is 2730 Kg/m³.

aa1050 h14 aluminum sheet
1100 Aluminum Sheet

1100 Aluminum Sheet

1100 aluminum sheet is used for industry, aluminum content of 99.00%. 1100 aluminum sheet has excellent ductility of pure aluminum, high corrosion resistance, excellent conductivity and thermal conductivity.

aluminum sheet interleaved with paper
1060 Aluminum Sheet

1060 Aluminum Sheet

1060 aluminum sheet contains 99.6% Al, it can be used as anodized aluminum alloy sheet, deep drawing aluminum metal, good mechanical properties, sizes can be customized.

Here are 6 different types of finishes for extruded aluminum:

#1 Mechanical Finishes

Aluminum can be buffed, blasted, polished, grinded or sanded. These finishes can improve surface quality or prepare the aluminum for other cosmetic finishes.

#2 Pretreatment

The aluminum is either etched or cleaned with alkaline or acidic materials. Then a pretreatment coating is applied. This coating enhances powder or paint adhesion and provides resistance against corrosion.

#3 Bright Dipping

An extrusion can be bright dipped, giving the aluminum a specular or “mirror” finish. To do this, technicians put the profile into a special dip solution (a combination of hot phosphoric and nitric acids). After bright dipping, profiles can also be anodized, thickening the metal’s corrosion-resistant oxide layer.

#4 Anodizing

This electrochemical process provides additional protection aside from the natural oxide film. A durable, porous anodic oxide layer is formed on the surface of the aluminum. Anodized aluminum will also accept vibrant colors. You can anodize any kind of aluminum alloy.

#5 Liquid Paint

These coatings come in many colors and provide a uniform film thickness. Liquid coatings generally contain volatile organic compounds (VOCs). They are driven off during the curing or baking process. When the VOCs are gone the volume solids form a film on the extrusion.

#6 Powder Coating

Powder coatings leave behind a film that can meet stringent performance criteria. At the same time, they do not contain VOCs. This is ideal for meeting environmental regulations on VOCs. The product is applied as a solid on the extrusion. While going through the oven process, solid particles fuse together to form the film.

#7 Sublimation

Have you ever seen aluminum extrusions that look like wood? After applying a base coat of powder, profiles can go through sublimation. Technicians wrap the profiles in a thin film with a pattern on it. The sublimation process transfers that pattern directly onto the extrusions.

Packing

Aluminum products of Tigers meet the export popular.

Plastic movie and brown paper can be protected at customers’ need. Also timber case or timber pallet is adopted to shield products from harm for the duration of the delivery.

There are styles of packaging, which is eye to wall or eye to sky. Customers can choose either of them for their convenience.

There are 2 tons in one package, and loading 18-22 lots in 1×20′ container, and 20-24 tons in 1×40′ container.

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