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Aluminium Plate & Aluminium Sheet

Product Introduction of Aluminium Plate & Aluminium Sheet

Aluminum is corrosion-resistant and almost maintenance-free. Compared with other metals, it has a comparable strength and weight ratio, and the weight is about 1/3 of that of iron, steel, copper or brass.

7050 Aluminium Sheet/Plate

7050 Aluminium Sheet/Plate 7050 aluminium sheet/plate is a high-strength heat-treatable alloy. It is based on 7075 aluminium alloy, which increases the Zn, Cu content and Cu

5083 Aluminium Sheet

5083 Aluminium Sheet 5083 aluminium sheet is the highest strength and corrosion-resistant even in seawater alloy among practical non-heat-treated alloys. And it is suitable for welding

6082 Aluminum Sheet/Plate

6082 Aluminum Sheet/Plate 6082 aluminium sheet/plate is a relatively good alloy aluminium sheet in the 6 series aluminium sheet (Al-Mg-Si). The 6 series is aluminium alloy

5052 Aluminium Sheet

5052 Aluminium Sheet 5052 aluminium sheet belongs to 5000 series Al-Mg alloy. Also, the 5052 aluminium sheet is the most widely used among rust-proof aluminium Send

3003 Aluminium Sheet

3003 Aluminium Sheet 3003 aluminium sheet is a typical Al-Mn antirust aluminium alloy. The addition of the alloy component Mn increases the strength slightly while maintaining

7075 Aluminium Sheet/Plate

7075 Aluminium Sheet/Plate 7075 aluminum sheet belongs to Al-Zn-Mg-Cu superduralumin, which is a cold-treated forging alloy with high strength and hardness, far better than soft steel.

Aluminum Plate Properties and Applications

 The performance of the aluminum plate is excellent. Compared with other common metals, the electrical conductivity is equivalent to that of copper products.

It is non-toxic and can be used in food preparation equipment. It is non-flammable (will not catch fire) and reflective, suitable for lamps. Some end uses of all grades of aluminum include transportation, food packaging, and furniture. The purpose is to be the most important metal element in the aluminum crust and 8% of the major electrical weight.

Alro stocks several grades of aluminum plate:

2024 aluminum plate is the most widely used aerospace alloy. It has aerospace manufacturing strength and good compression resistance, good workability and structure. 2024 aluminum plate is very suitable for precision parts and accessories, including aircraft parts, computers and ordering.

3003 Aluminum Plate

3003 aluminum is the most widely used aluminum alloy. It has good workability and corrosion resistance, and has a good response to treatments such as lamination or anodizing. It is a non-heat treatable metal. It is usually used for pressure vessels, garage doors, builders’ hardware, etc.

5052 Aluminum Plate

5052 aluminum is an alloy similar to 3003 aluminum, but has better corrosion resistance and strength. It is usually used for cooking utensils, mailboxes, railings, etc.

6061 aluminum plate

6061 aluminum plate is the most versatile and most used among heat treatment grades. It has good workability, weldability and medium strength. (Compared with 2024 and 7075 aluminum, its strength is lower). 6061 aluminum has good welding and brazing capabilities due to its high corrosion resistance at all temperatures. Typical applications include pipe fittings and bridge components.

7075 aluminum plate

7075 aluminum is the highest strength aluminum sheet in Alro’s inventory; its strength is comparable to many steels. The cost of this grade of aluminum is relatively high, so it is usually used when cheap alloys are not suitable. Typical applications include aircraft parts, missile parts, bicycle frames, etc.


The corrosion resistance of stainless steel coils decreases as the carbon content increases. Therefore, the carbon content of most stainless steels is low, up to 1.2%, and some steels have a low ωC (carbon content) of even less than 0.03% (such as 00Cr12). The main alloying element in stainless steel coil is Cr (chromium). Only when the Cr content reaches a certain value, the steel has corrosion resistance. Therefore, the goods Cr (chromium) content of at least 10.5%. Stainless steel coil also contains Ni, Ti, Mn, N, Nb, Mo, Si, Cu and other elements.

Most of the requirements for use are to maintain the original appearance of the building for a long time. In determining which type of goods to choose, the main considerations are the required aesthetic standards, the corrosiveness of the local atmosphere and the cleaning system to be used. However, other applications are increasingly seeking structural integrity or impermeability. Examples include roofs and sidewalls of industrial buildings. In these applications, construction cost to the owner may be more important than aesthetics, and the surface may not be very clean. The use of 304 stainless steel coils in dry interior environments is quite effective.

Weldability. Different product uses have different requirements for weldability. A class of tableware generally does not require weldability, even including some cookware companies. However, most products require raw materials with good weldability, such as second-class tableware, insulation cups, steel pipes, water heaters, water dispensers, etc.


Corrosion resistance. Most stainless steel coil products require good corrosion resistance, such as Class I or Class II tableware, kitchen utensils, water heaters, water dispensers, etc.


Polishing performance. In today’s society, stainless steel coil products in the production process are generally polished, only a few products such as water heaters, drinking fountains, etc. do not need to be polished. Therefore, this requires raw materials with good polishing performance.

1. The need for pre-treatment
Pretreatment is an important treatment step before the surface of stainless steel coil parts enter surface treatment (including pickling, chemical polishing and electrochemical polishing, electroplating, passivation, black coating, coloring, chemical treatment, etc.). During the forming process of goods parts, the surface may adhere to oil stains, burrs, rough surfaces and oxides. Therefore, before surface treatment, oil stains, burrs, uneven surfaces and oxides must be removed in order to obtain subsequent satisfactory results through processing.

2. Treatment of removed dirt

Stainless steel coil surface pretreatment in the need to remove the dirt can be divided into two categories: organic and inorganic substances.

(1) organic dirt. Including mineral oil (such as diesel, oil, paraffin, gypsum, etc.) and animal oil, vegetable oil (such as soybean oil, camellia oil, rapeseed oil, lard, butter, etc.). These oils are mainly from the stainless steel coil zero cattle processing process used in the lubricant. , cutting oil, quenching oil, polishing paste and polishing paste, and fingerprints.

(2) Inorganic dirt. Including dirt, dust particles, oxides and other contaminants generated during the heat treatment process.

3. Pretreatment steps for stainless steel coil parts

(1) The surface is mechanically leveled. Eliminate the roughness of the stainless steel coil surface, through mechanical polishing and grinding to achieve a surface finish.

(2) Degreasing. Remove the surface oil and dirt.

(3) Acid washing. Remove the oxides on the surface.

(4) Weak corrosion. Activates the surface to be treated, removes the surface passivation film, and exposes the metal crystal structure.

Stainless steel is a high-alloy steel, with a large resistance to rolling deformation. In order to carry out high-efficiency and high-precision rolling, rigid rolling mills should be used, generally multi-roller cold rolling mill.


Special welding process is also a feature of cold-rolled stainless steel coil production.


In the production process of cold rolled stainless steel coil, the raw material (hot rolled coil) should be annealed, intermediate annealing should be carried out in the cold rolling process, and the final product should be annealed, so annealing is an important part of the production.


Cold-rolled stainless steel is a high-grade steel products, there are strict requirements for surface quality. Not only are metallurgical defects caused by the previous process not allowed, but also obvious defects caused by the cold rolling process.

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