The Top Four Series of Aluminum Alloys

1. The Top Four Series of Aluminum Alloys Abstract: 3000 serie, 5000 series and 8000 series with rich grades and forms are widely used in container, vehicle, shipbuilding, packaging,etc. 3003, 5052, 5083, 5086,8011 are the well known alloy grades. Welcome to know their rich uses. 3000 series Aluminum 3003 Aluminum Sheet Due to the increasing need for lightweight vehicles in recent years, high energy density and lightweight have become the development direction of future vehicle power batteries. At present, there are many technical routes for domestic new energy vehicles in terms of vehicle batteries. Under the current technical standards, cylindrical batteries, square batteries, and soft-pack batteries have become relatively mature power carriers in the field of pure electric passenger vehicles.

2. In order to increase the cruising range, new energy electric vehicles need a large number of lithium battery combination modules. Each module is composed of several battery boxes, so the quality of each battery box has a great influence on the quality of the entire battery module. In order to reduce the weight of the battery, it is an inevitable choice to use 3003 h14 aluminum plate to make lithium battery shell. 3003 aluminium sheet belongs to an aluminum-manganese alloy, and the main alloying element is manganese. The boiling point temperature of aluminum and manganese is not much different, so there will be no problems such as the deterioration of weld seam quality due to the burning of metal elements during welding. 3003 aluminum alloy has low density and soft material, and has the advantages of being easy to stretch and form the aluminum shell of the power battery as a whole. It has been used by many companies for battery packaging. The density of aluminum alloy is much smaller than that of traditional stainless steel packaging materials. 3003 H14 aluminum sheet is used for square lithium battery case. In electric vehicle manufacturing, 3003H14 power battery case is the main material of power batteries. The 3003 aluminum sheet for power battery shells is undergoing a transition from "0 state" to "H14" state. The fundamental reason lies in the advancement of technology. "O state" material has the characteristics of low production efficiency and high yield. The material in the "H14" state is more suitable for automatic and semi-automatic punching, and has higher production efficiency. Therefore, some large-scale and powerful power battery manufacturers are currently using 3003 H14 aluminum plate. What are the 3003-h14 aluminum mechanical properties? It refers to the finished product after the aluminum plate undergoes secondary processing after the annealing process, and then comes out after cold rolling, and is not subjected to heat treatment. The strength of the aluminum plate processed in this way will be relatively high, but the tensile strength

3. is relatively small. The tensile strength of 3003-H14 is greater than 140MPa, while that of H24 is 240MPa. The lithium battery shells have more strict requirements on the chemical composition of 3003 aluminum sheet. Haomei Aluminum has a good control in order to produce raw materials suitable for battery shell materials. 5000 series aluminum foil 5052 Aluminium Magnesium Foil Aluminum foil container will gradually replace plastic container and become the mainstream in the light and fast food market. Aluminum foils for container include 8011, 3003 and 5052 aluminum foil. 5052 aluminum foil is more expensive than the first two, but its performance is also better. The aluminum foil tray is mostly made of 8011 aluminum foil. In 5052 aluminum foil has also been sought after by foreign companies because of its highest strength. 5052 aluminium magnesium foil can be used for food packaging and food container, safe and hygienic. Aluminum foil for aviation food container is generally formed by one-time stamping of 5052 aluminum foil through the cooperation of punching machine and mold.

4. Its products have a certain degree of hardness, the product price is moderate, and are disposable, while aluminum foil is a recyclable and environmentally friendly material that can be used indefinitely. Aluminum foil has good heat transfer performance, which just meets the needs of short voyage and fast heating. 5052 aluminum foil can be used as the raw material of aluminum foil for barbecue trays. The aluminum foil for barbecue is made of electrolytic aluminum with a purity of 99.0%-99.7%. No bacteria or microorganisms will grow on the surface, and there will be no grease penetration under high temperature conditions. This advantage is unmatched by any other material. The honeycomb core is the inner filling of the honeycomb panel. The honeycomb panel has the advantages of light weight, waterproof, high strength and good flatness. The aluminum honeycomb panel is a new material to replace the aluminum veneer and aluminum-plastic panel. The honeycomb aluminum foil has anti-deformation and good sound insulation. , heat insulation, impact resistance and other advantages. 5052 aluminum foil can be use for this purpose. The thickness of the aluminum foil is 0.02~0.06mm.. 5052 aluminium foil is an important raw material of honeycomb core that it

5. has a great influence on the quality and service life of honeycomb core. Haomei aluminum foil is resistant to high temperature (high temperature up to 250 degrees, low temperature minus 20 degrees), oil and acid and alkali. It will not decompose with food. The raw material of aluminum foil provides food grade SGS report. 5052 5083 Aluminum for Boat Building Aluminum is the most abundant metal element. The pure aluminum is active and has low strength. Other elements are often added to pure Al to form alloys to meet the application requirements. Aluminum alloys have low density, but high strength ratio, close to or exceeding high-quality steel, good plasticity, excellent electrical conductivity, thermal conductivity and corrosion resistance. The 5000 Al-Mg alloys like ASTM5083 and ASTM5052 have been widely used in the marine environment because of its low density, high specific strength, and good corrosion resistance. It is an ideal material for manufacturing light high-speed ships. The composition content of 5083 aluminum alloy Mg 4.0~4.9, Mn 0.4~1.0, Cr 0.05~0.25, Fe≤0.40, Si≤0.40, Zn ≤0.25, Ti ≤0.15, Al the remainder. . Among them, Mg is the main strengthening element, which plays a certain role in solid solution strengthening. A corrosion-resistant passivation film is easy to form on the surface of aluminum alloy, which has a certain protective effect on the substrate, but this layer of oxide film is often

6. non-uniform, and the thickness is very thin, only about 4 nm, which is not enough to resist corrosion in harsh environments. Seawater is a highly corrosive medium, and the Cl-will cause the dissolution and destruction of the passivation film, so that the passivation film loses its protective effect, and then causes the material to corrode and fail. Studies have confirmed that aluminum alloys do not undergo uniform corrosion, and the typical form of corrosion is pitting corrosion. Pitting corrosion can cause corrosion and perforation of materials, which seriously affects the strength and safety of materials. Therefore, measures need to be taken to eliminate or weaken the occurrence of pitting corrosion and enhance the practicability of materials. The 5083 aluminum alloy has a small activation ring in seawater, and it is easy to restore the passive state. At the same time, the breakdown potential and protection potential are higher than the self-corrosion potential in the stable state, reflecting its good corrosion resistance in seawater. Cl- is the active ion that induces pitting corrosion of 5083 aluminum alloy, and the content of Cl- significantly affects the pitting potential. Aluminum is an amphoteric metal with relatively active chemical properties, and chemical reactions can occur in both alkaline and acidic environments. Experiments have confirmed that cathodic polarization within a certain range will inhibit the anode reaction and significantly improve the corrosion resistance of aluminum alloys. However, when the cathodic polarization potential exceeds a certain value, cathodic corrosion of aluminum alloys may occur. The self-corrosion potential ofASTM5083 in still seawater is about -760 mV, the pitting corrosion breakdown potential is -690 mV, and the corresponding pitting corrosion protection potential is -720 mV. Electrochemical cathodic protection can effectively inhibit the formation and development of pitting corrosion in 5083 aluminum alloy. In the seawater system, the suitable cathodic protection potential range of 5083 aluminum alloy is between -800~-1000 mV.

7. Marine Grade 5086 Aluminum The marine grade aluminum sheets have the advantages of excellent corrosion resistance and weldability, which can meet the specific requirements of navigation. At present, aluminum-magnesium alloys, aluminum-magnesium-silicon alloys and aluminum-zinc-magnesium alloys are generally used as marine aluminum alloy materials. Among them, the most common are silicon-aluminum alloy and aluminum-zinc-magnesium alloy materials. Aluminum alloys used in shipbuilding structures mainly include the following three types of alloys: 5083, 5086, and 5456. What are the 5086 aluminum properties? The main alloying elements of 5086 aluminum plate are magnesium and silicon. It has high corrosion resistance, good weldability and medium strength. In terms of mechanical properties, the tensile strength of 5086 aluminum sheet is ≥240, conditional yield strength is ≥95, elongation is ≥10. In seawater corrosion experiments, the maximum depth of the corrosion pits of the 5086-H34 alloy sample is 0.86 mm, but there is no large strength loss; after 5 years, the strength loss of the fully immersed unprotected weld 5086 sample is negligible, and almost no corrosion pits are found. In partially immersed samples, the strength loss of 3.2 mm thick unwelded 5086 is negligible regardless of the immersion conditions, which fully shows that 5086 maintains

8. its inherent resistance to seawater stress corrosion. In 2012, Austal US Company of the United States built the first batch of "Vigilance" all-aluminum catamaran high-speed transport ships, using 5083 aluminum alloy plates provided by Alcoa. Most of the 811.30 t aluminum alloys used in the superstructure of the US Navy's first ballistic missile destroyer "Dewey" are 5466 thick plates and 5086 thin plates. The construction and working environment of the ship require that the material should have good corrosion resistance, weldability and plasticity, and certain tensile strength, yield strength, elongation, impact resistance and other properties. 5086 aluminum sheet can meet these requirements, so the application prospect of aluminum alloy products in ship transportation vehicles is very promising. Haomei Aluminum is not only one of the 5086 aluminum plate suppliers, but also a supplier of 5083, 5456, 5059, 6061, etc. With DNV, ABS, LR and CSS certification, we have entered the shipbuilding market of many countries. 8000 series Aluminum For aluminum foil pharmaceutical packaging, the quality is largely reflected in the heat seal strength of the heat sealing aluminum foil. Therefore it is necessary to analyze the factors that affect the heat-sealing strength of aluminum foil pharmaceutical packaging. The aluminum foil is the carrier of the adhesive layer, and its quality has a great influence on the heat sealing strength of the product. Especially the surface oil of the original aluminum foil can weaken the bonding force between the adhesive and the original aluminum foil. If there is oil on the surface of the aluminum foil and the surface tension is lower than 31×10 m, it will be difficult to achieve the ideal heat sealing strength, so the quality of the original aluminum foil must be strictly controlled.

9. The adhesive is a special substance containing a solvent. It is coated on the dark side (or smooth side) of the original aluminum foil under certain process conditions, and is dried in an oven to form an adhesive layer, which plays a decisive role in the heat-sealing strength of the product. Adhesives can be divided into colorless transparent, gold and colored series. The main process is to coat the adhesive on the surface of the original aluminum foil to form a film under the control of certain process parameters. The quality of the film can directly affect the heat-sealing strength of the product. The more important parameters include the speed of coating, the segmental temperature of the drying tunnel, the anilox shape, depth, number of lines of the coating roller, and the position and angle of the scraper. The heat sealing temperature is an important factor affecting the strength of the heat seal.

10. If the temperature is too low, the adhesive layer cannot be well heat-sealed with the PVC film, and the bonding between the adhesive layer and the PVC film will not be firm. If the temperature is too high, it will affect the medicine. Therefore, a reasonable heat-sealing temperature is usually between 150°C and 160°C. To achieve the ideal heat sealing strength, it is necessary to set a certain heat sealing pressure. If the pressure is insufficient, not only the adhesive layer of the product cannot be fully attached to the PVC film for heat sealing, but even air bubbles will exist between the two, failing to achieve a good heat sealing effect. The heat sealing time will also affect the heat seal strength of the product. Usually, under the same heat-sealing temperature and pressure, a longer heat-sealing time can make the heat-sealing part more firm and perfect, and can better achieve the expected heat-sealing strength. However, the process conditions of modern high-speed pharmaceutical packaging machines cannot provide a long time for heat sealing. If the heat sealing time is too short, the heat seal between the adhesive layer and the PVC film will be insufficient. For this reason, the national standard stipulates that the scientific heat sealing time is 1S. In general, there are many factors that affect the heat seal strength of seal aluminum foil for pharmaceutical packaging. As a aluminum foil jumbo roll manufacturer, Haomei Aluminum can provide qualified aluminum foil jumbo roll for heat sealing.