8021 aluminium alloy

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Product information

Model: 8021
Status: Customizable 
8021 aluminum alloy is a type of 8-series aluminum alloy widely used in soft-pack battery aluminum plastic films and packaging bags, etc. Its performance characteristics are as follows:
Mechanical properties
‌Strength and ductility‌
The strength of 8021 alloy is relatively high, but its ductility is slightly lower than that of 8011 alloy. It is suitable for packaging scenarios requiring higher strength (such as cement, salt bags)‌
The cupping value of 8021 aluminum foil produced by hot rolling can reach 7.5 - 8.0 mm, meeting the deep drawing requirements of soft-pack battery aluminum plastic films‌
‌Processing performance‌
It has excellent deep drawing forming performance, especially suitable for bubble sheet medicine foil, new energy battery packaging and other complex shape processing‌
The cold stamping forming performance is good, and it is resistant to chemical corrosion, suitable as the barrier layer of the battery‌
Functional characteristics
‌Barrier property‌: It has good barrier effects on moisture, oxygen, etc., and is a key barrier material for soft-pack battery aluminum plastic films‌
‌Corrosion resistance‌: The presence of lithium, boron, etc. endows it with chemical corrosion resistance, protecting the internal part of the battery from environmental erosion‌
‌Thermal stability‌: After uniform heating annealing, the morphology of the second phase (such as Al-Fe phase) affects its subsequent rolling performance‌ 
Product status and specifications 
Common states: F (processing state), O (annealing state), H12 - H26 (work hardening state)
Thickness range: 0.03 - 0.2 mm, width can reach 100 - 1600 mm
Modification research
Adding Nd and Sr elements can refine the grains, improve the distribution of second phases, and significantly enhance mechanical properties
The homogenization annealing temperature should be controlled below 560°C to avoid excessive coarsening of the Al-Fe phase Application fields
New energy batteries: Aluminum plastic film layer of pouch-type lithium batteries
Packaging materials: High-strength packaging bags for food and industrial products
Medical field: Bubble drug foil 
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Product parameter

Chemical composition
The main components of 8021 aluminum alloy include iron (Fe), silicon (Si), copper (Cu), and other elements. The iron content is 1.2% to 1.7%, the silicon content is less than 0.15%, the copper content is no more than 0.05%, and the rest is aluminum (Al).
‌Chemical composition of 8021 aluminum alloy
According to the national standard GB/T 3190-2020 "Chemical Composition of Cast Aluminum and Aluminum Alloys", the chemical composition of 8021 aluminum alloy is as follows:‌
‌Iron (Fe): 1.2% to 1.7%
‌Silicon (Si): ≤0.15%
‌Copper (Cu): ≤0.05%
‌Other individual elements: ≤0.05%
‌Total of other elements: ≤0.15%
‌Aluminum (Al): Balance
‌Other relevant explanations
8021 aluminum alloy is mainly used for pressure processing products, such as plates, strips, foils, tubes, etc.
Some patents or special-purpose 8021 aluminum alloys may add a small amount of other elements (such as chromium, strontium, etc.), but these components are not the standard requirements.
The chemical composition of 8021 aluminum alloy in welding materials may differ from the standard, and it needs to be selected according to the specific purpose. 
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Shiyu Metal Material Technology Co., Ltd. is a collection of procurement, processing, agent, sales, logistics, warehousing in one of the enterprises, the company has a large-scale spot supply base in China, with domestic and foreign large steel mills and suppliers to maintain good relations of cooperation, with a full range of multi-channel procurement resources.
Shiyu Metal main products: nickel base alloy, Hastelloy, super austenitic stainless steel, duplex stainless steel, cobalt base alloy, pure nickel, titanium and titanium alloy, heat resistant, corrosion resistant alloy and other kinds of steel, a large number of product categories, can meet the size and thickness customization, prefabrication and other diversified needs.
The company has ISO9001 quality certification, the company's product standards include: the United States (UNS) ASTM /ASME, AMS, German DIN/EN, Japan (SUS) JIS and other standards supply, provide the original material certificate. We can supply according to the standards and technical requirements provided by customers to ensure that the goods and specifications are complete to meet the needs of various merchants. From raw materials to finished products, all go through three quality inspection to ensure the qualified rate of finished products. Shiyu Metal strives for perfection in every detail to ensure that the quality of products in different countries and regions around the world can meet international standards. Shiyu Metal has established a good strategic cooperative relationship with the world famous steel mills such as HAYNES, ATI, SPECIALMETALS, VDM, OUTOKUMPU, Japan Metallurgy, Nippon Steel, and Datong Special Steel.
The products supplied by Shiyu Metal are widely used in nuclear power, petrochemical, mechanical engineering, precision processing, aerospace, electronic instruments, medical equipment, automobile manufacturing, environmental protection, wind power application, seawater desalination, shipbuilding industry, paper making machinery, mining engineering, cement manufacturing, metallurgical manufacturing, corrosion resistant environment field, high temperature environment field, mold field, etc. It is a global high-quality supplier of special steel materials.
Shiyu Metal Material Technology Co., Ltd. is committed to the purchase, agent and sales of special steel, and has a perfect special steel sales management system and product quality supervision system. The company has been adhering to the "integrity, innovation, responsibility, win-win" business philosophy, adhere to the "quality first, customer first" service purpose, to provide customers with quality services and high-quality steel products. Shiyu Metal actively participates in the development of domestic steel industry ecology, and is willing to contribute to the development of national special steel.



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