What are the two types of aluminum anodizing?

There are two main types of aluminum anodizing: sulfuric acid electrolytic oxidation and hard anodizing.

Sulfuric acid electrolytic oxidation is a conventional anodic oxidation method, which uses sulfuric acid as the electrolyte to form an oxide film on the surface of aluminum by means of electricity. This oxide film has certain protective and decorative properties and can improve the corrosion resistance and aesthetics of the aluminum surface.

Hard anodizing is a special anodizing method that usually uses a mixture of sulfuric acid and an oxidizing agent as the electrolyte. In this process, the oxide film formed is harder and more wear-resistant than sulfuric acid electrolytic oxidation, while having higher density and better corrosion resistance. The hard anodized film also has certain insulation and conductivity, so it is often used in high-end applications in the fields of electronics, machinery, and aviation.

Hard anodized aluminum sheet

Hard anodized aluminum sheet

Alloy parameters of anodized Aluminum sheet

Aluminum alloy grade:1050, 1060, 1100,
3003, 3004, 3005,
5052, 5083, 5754
6061, 6063, 6082
Aluminum status:O, H12, H14, H16, H18, H22, H24, H26, H32, H34, H36, H38 and other different states.
Thickness and Width:The thickness of the anodized aluminum plate is usually between 0.2-5mm, and the width also has a certain range.
Oxide film thickness:Usually, the oxide film thickness of sulfuric acid electrolytic alumina plate is between 5-25 microns, while the oxide film thickness of hard anodized aluminum plate can reach more than 50 microns.
Surface treatment:There are usually different treatments such as matte, semi-gloss and high-gloss to meet different appearance and texture requirements.

anodized aluminum plate hot selling product size

What are the anodized aluminum sheet colors?

  • black anodized aluminum plate
  • red anodized aluminum sheet
  • blank anodized aluminum plates
  • black anodized aluminum sheet
  • blue anodized aluminum sheet
  • white anodized aluminum sheet
  • clear anodized aluminum sheet
  • gold anodized aluminum sheet

Is anodized Aluminum better than stainless steel?

Anodized aluminum is a surface treatment technology that soaks aluminum products in an electrolyte and forms a layer of aluminum oxide film through the action of electric current. Aluminum oxide film has strong corrosion resistance, wear resistance, insulation and decoration, so it is widely used in electronics, construction, automobile, aerospace and other fields.

Stainless steel is an alloy steel consisting of elements such as iron, chromium, and nickel. It has high corrosion resistance and strength, so it is widely used in the manufacture of various chemical, medical, food processing, and construction materials.

Stainless steel may be more suitable if high corrosion resistance and strength are required, while anodized aluminum may be more suitable if surface decoration and insulation are required. Therefore, the selection of appropriate materials should be evaluated and compared according to specific needs.

black anodized aluminum sheet for laser engraving

black anodized aluminum sheet for laser engraving

Is anodized aluminum safe to eat from?

In general, anodized aluminum is not edible.

Although anodizing can enhance the corrosion resistance, hardness, and aesthetics of aluminum products, a layer of the aluminum oxide film is usually formed on the surface of aluminum products after treatment. Although the aluminum oxide film itself is non-toxic, in some cases the aluminum oxide film can be damaged, allowing aluminum ions to be released. Excessive accumulation of aluminum ions in the human body may cause adverse health effects, such as damage to the central nervous system and skeletal system.

Therefore, anodized aluminum products are generally not recommended for food processing and food containers. If you need to use aluminum products to process and store food, it is recommended to choose food-grade aluminum products that meet the relevant national standards to ensure safety.

Aluminum sheet manufacturers near me

Henan Huawei Aluminum Co., Ltd. is the leader of many aluminum manufactures and suppliers in China. We strictly control the quality and focus on customers. We hope to have in-depth cooperation with you and provide you with high quality aluminum material products custom OEM services. If you want to get the newest and best prices by per kg ( kilogram ) or per ton standard weight, please contact us.

Aluminum Sheet Manufacturers Near Me


Aluminum sheet plate standard export packing

  • The aluminum plate is paperclip or laminated to ensure that the surface of the aluminum plate is intact and free of scratches;
  • Plastic film ( HDPE, PVC, PE or PET etc ) protection or hard kraft paper wrapping is used to prevent moisture and rain to ensure that the aluminum plate is clean and free of dirt during transportation (each package has a moisture-proof desiccant to ensure the quality of our products in East China and South China, where there is more rain);
  • Installed with wooden brackets and reinforced with steel straps to avoid collision during transportation and to ensure the geometry of the aluminum plate remains unchanged;
  • For export products, we use wooden boxes and pallets with fumigation mark for packaging;
  • We can also pack according to other packaging requirements of customers;