Anodized aluminum sheet is an aluminum sheet placed in the corresponding electrolyte (such as sulfuric acid, chromic acid, oxalic acid, etc.) as an anode, and electrolysis is performed under specific conditions and the action of external current.
Anodized aluminum sheet is an aluminum sheet placed in the corresponding electrolyte (such as sulfuric acid, chromic acid, oxalic acid, etc.) as an anode, and electrolysis is performed under specific conditions and the action of external current. A dense oxide film is formed on the surface of the aluminum sheet, and the colorless and porous nature of the anodized film is used to dye and protect the aluminum matrix.
Anodized aluminum sheet
A thin layer of aluminum oxide is formed on the oxidized surface of the aluminum sheet, with a thickness of 5 to 20 microns, and a hard anodized film can reach 60 to 200 microns.
Ultimately, it results in aluminum being harder than diamond. It is typically used in harsh environments or applications that require exposure to the elements. The process creates a hard coating that replaces the original substance. Plus, it won’t flake like regular rust, so aluminum oxide sheets can be used in many applications.
5052 aluminum sheet has good anodizing performance, and the color difference after anodizing is small.
Anodizing is accomplished by immersing the aluminum into an acid electrolyte bath and passing an electric current through the medium. A cathode is mounted to the inside of the anodizing tank; the aluminum acts as an anode, so that oxygen ions are released from the electrolyte to combine with the aluminum atoms at the surface of the part being anodized. Anodizing is, therefore, a matter of highly controlled oxidation—the enhancement of a naturally occurring phenomenon.
Process of anodizing aluminum sheet
Cleaning → pretreatment → electrolyte → current and time → anodizing → sealing → cleaning and drying
Cleaning: Before anodizing, metal parts need to be cleaned to remove surface grease and impurities. The cleaning process is usually carried out with alkaline or acidic solutions.
Pretreatment: Metal parts first undergo some pretreatment, such as deburring, grinding or polishing. This can improve the surface finish after anodizing to some extent.
Electrolyte: The metal part is placed in an electrolyte containing an oxidizing agent and other additives. The composition of the electrolyte depends on the metal used and the desired surface treatment.
Current and Time: Make the metal part anodic by adding a direct current to the electrolyte. The current and treatment time are adjusted according to the desired treatment effect.
Anodizing: In the electrolyte, an oxide film is formed on the surface of the metal parts. This process is called anodizing. During this process, the thickness and color of the oxide film depend on the electrolyte and current/time parameters used.
Sealing: By soaking in hot water or other sealants, the micropores of the oxide film are sealed, thereby enhancing its corrosion resistance and hardness.
Cleaning and drying: Processed parts need to be cleaned and dried to remove excess electrolyte and sealant.
| Oxide film thickness | Chemical oxidation: the oxide film is thin, with a thickness of about 0.5 to 4 microns. Electrochemical oxidation: the oxide film thickness is about 5 to 20 microns. Hard anodizing: the oxide film thickness can reach 60 to 200 microns. |
| Oxide film hardness | Extremely hard: HV=1200-1500 Alloy aluminum: HV=400-800 |
| Heat resistance | Compared with before oxidation, the high temperature resistance performance is greatly improved |
| Oxide film melting point | Up to 2320K |
| Conductivity | Excellent insulation, breakdown voltage 2000V |
| Corrosion resistance | Excellent, corrosion resistance for thousands of hours in ω=0.03NaCl salt spray |
| Adhesion | The combination with the body is very strong |
| Is it poisonous | Environmentally friendly and non-toxic, it can replace stainless steel and traditional spraying and electroplating processes |
| Heat resistance | It can withstand temperatures around 1500°C, while ordinary aluminum plates can only withstand 660°C. |
| Application | Abrasive materials and cutting tools, aluminum parts that require high heat resistance and insulation performance, such as pistons, cylinders, bearings, impellers of hydroelectric equipment, etc. |
Anodized aluminum sheet metal is a type of aluminum sheet that has undergone an anodization process. Anodization is an electrochemical process that thickens the natural oxide layer on the surface of aluminum, making it more durable, corrosion-resistant, and able to hold color and dyes. Here are some key features and uses of anodized aluminum sheet metal:
Enhanced Corrosion Resistance: Anodized aluminum has a thicker and more stable oxide layer on its surface, which provides excellent resistance to corrosion and oxidation. This makes it suitable for outdoor and marine applications.
Increased Durability: The anodization process hardens the surface of the aluminum, making it more scratch-resistant and durable. This makes it suitable for applications where the material may encounter wear and tear.
Color Options: Anodized aluminum can be dyed in various colors during the anodization process. This allows for a wide range of color choices for decorative and aesthetic purposes.
Electrical Insulation: Anodized aluminum has good electrical insulation properties, which can be advantageous in certain applications where electrical conductivity needs to be minimized.
Decorative and Architectural Use: Anodized aluminum is commonly used in architectural elements, such as building facades, curtain walls, and decorative trim, due to its durability and aesthetic appeal.
Consumer Products: It is also used in the production of consumer products like cookware, appliances, and electronic enclosures, where its durability and resistance to staining are important.
Lightweight: Aluminum itself is a lightweight material, and anodized aluminum maintains this property, making it suitable for applications where weight is a concern.
Anodized aluminum sheet applications
Easy Maintenance: Anodized aluminum is relatively easy to clean and maintain, requiring simple cleaning procedures to retain its appearance.
Non-Toxic and Environmentally Friendly: Anodizing is a non-toxic process, and anodized aluminum is considered environmentally friendly because it is durable and long-lasting, reducing the need for frequent replacements.
Anodized aluminum for buildings
Price
The price is expensive. Due to the complex process and high technical requirements, the price of anodized aluminum sheet is much higher than that of mill finish aluminum sheet.
Color difference problem
The color difference problem of anodized aluminum sheets is not caused by production technology because the oxidation bath liquid is prepared from a variety of chemical elements. Every time a batch of aluminum materials is oxidized, the chemical composition in the bath liquid changes, so the bath liquid is oxidized and colored with variable values. Aluminum materials always have color differences.
1050 aluminum strips belongs to the family of commercially pure malleable 1000 series alloys, and the aluminum is 99 pure. 5%, with excellent molding processing characteristics, high corrosion resistance, good electrical and thermal conductivity.
Aluminum circle for road sign refers to the aluminum circle used in the production of road signs. Because aluminum circles have strong corrosion resistance and weather resistance, aluminum circles are very suitable for the production of road signs.
Factory hot selling thick aluminum foil, thin aluminum foil, household packaging aluminum foil, food packaging foil, medicinal aluminum foil
8021 aluminium foil is a common alloy in 8000 series aluminum alloys. Common aluminum foils in 8000 series aluminum alloys include 8011 Aluminum Foil and 8079.
Welcome to Huawei Aluminum, your trusted source for high-quality aluminum coils designed specifically for aluminium roofing sheets.
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Latest Comments
We need some t111 aluminium plate. We are looking for quarter inch by 4'x8' sheets
Dear Sales Manager, I hope this email finds you well. This is Min-Hyung Lee, CEO of Taesan Steel Co., Ltd., an import & export company based in Incheon, South Korea, dealing in steel and aluminum materials. We understand that Henan Huawei Aluminum produces 1100 aluminum coils in H16 temper from 0.2 mm thickness at your mill in Gongyi, Henan. We use mill finish aluminum coil as a substrate for coating in Korea, and are looking for a reliable Chinese mill for regular monthly imports. We would appreciate your quotation for the material below, based on current market prices. 1. Material - Alloy / Temper: A1100 – H16 (A1235 or A1050 acceptable subject to prior approval) - Standard: KS D 6701 or equivalent (JIS H 4000, ASTM B209, GB/T 3880 accepted) - Surface: mill finish (as-rolled), suitable for painting/coating 2. Ordered sizes - 0.45 mm x 1,120 mm x Coil (main size) - 0.60 mm x 1,060 mm x Coil - No minus tolerance on thickness (e.g., actual 0.45 mm or above for the 0.45 mm order) 3. Coil weight: approx. 3-6 MT per coil 4. Quantity: 30-40 MT per month (estimated 360-480 MT per year) 5. Price terms: CIF Incheon Port or Pyeongtaek Port, South Korea, in USD (USD/kg or USD/MT). A formula-based quotation (e.g., SMM ingot price + processing cost) is also acceptable, provided the total is given on a CIF basis (or FOB with ocean freight shown separately). Please include the following in your quotation: 1. Unit price (CIF Incheon or Pyeongtaek, in USD) 2. MOQ per size 3. Lead time (order to shipment) 4. Payment terms 5. Whether the material is DC or CC rolled, and producible thickness/width range for 1xxx alloys 6. Mill information (location, ISO 9001 or other certifications) 7. Sample availability and conditions (we plan a coating trial before regular orders) 8. Confirmation that a Mill Test Certificate (chemical composition and mechanical properties) will be provided with each shipment Our plan is to review your quotation and material specification first, then request samples for a coating trial. If the results are satisfactory, we intend to place regular monthly orders. We are also willing to visit your mill in China in person to see the production line and discuss the details of a long-term partnership. The detailed specification (SPEC-AL-2026-01) is attached for your reference. We look forward to your reply. Best regards, Min-Hyung Lee CEO | Taesan Steel Co., Ltd. Email: [email protected] Tel: 82 10 5048 5768 WeChat: dolf369
Aluminum 5754 H111 หนา 8 mm กว้าง x ยาว : 4 x 6 ฟุต
سلام بسیار عالی ،،من از ایران تماس میگیرم فویل طلا ۱۲میکرون عرض ۶۱سانت نیاز داریم حدودا هرماه ۳۵هزار متر
Dear Sales Team, I hope you are doing well. We are looking to source aluminum products from your company and would appreciate receiving your best quotation for the following: Aluminum Sheets Thickness: 2 mm, 3 mm, 4 mm, and 5 mm Please provide your available standard sheet sizes. Kindly quote the price per sheet and the price per metric ton. Aluminum Coils Thickness: 2 mm, 3 mm, 4 mm, and 5 mm Please provide your available coil widths, standard coil weights, and inner diameter specifications. Kindly quote the price per metric ton. For both sheets and coils, please include: Available alloys (e.g. 1050, 3003, 5052) Temper options Mill finish or other available surface finishes Minimum Order Quantity (MOQ) Production lead time Payment terms Please provide your quotation based on: CIF Jebel Ali Port, UAE (including sea freight), or alternatively provide both FOB China and CIF Jebel Ali Port, UAE prices. If available, please also send: Product catalogue Mill Test Certificate (MTC) sample Photos of the products and packaging. We are interested in establishing a long-term business relationship. Our initial purchase volume is expected to be 100+ metric tons, with the potential for larger and recurring orders if your pricing, quality, and service meet our requirements. Thank you for your time. We look forward to receiving your quotation and hope to build a successful long-term partnership. Best regards, Eng.Yousef