Classification of Aluminum Alloys

Aluminum alloy is an important engineering material widely used in fields such as aviation, automotive, and construction. Aluminum alloys can be divided into several categories based on their composition and properties.

1. Classification by main alloy elements

According to the different proportions of chemical elements, aluminum alloys can be divided into: 1 series to 9 series.

Al 1000 series (Pure) 1050, 1060, 1070, 1100, 1145, 1200, 1230, 1350
Al-Cu 2000 series 2011, 2014, 2017, 2024, 2124, 2219, 2319, 2397, 2519, 2524, 2618
Al-Mn 3000 series 3003, 3004, 3005, 3104, 3105
Al-Si 4000 series 4006, 4007, 4015, 4032, 4043, 4047, 4543
Al-Mg 5000 series 5005, 5019, 5050, 5052, 5059, 5083, 5086, 5154, 5182, 5252, 5356, 5454, 5456,5754
Al-Mg-Si 6000 series 6005, 6010, 6013, 6060, 6061, 6063, 6065, 6082, 6101
Al-Zn 7000 series 7005, 7010, 7022, 7034, 7039, 7046, 7050, 7055, 7065,7072, 7075
8000 series (Misc.) 8006, 8009, 8011, 8014, 8019, 8025, 8030, 8090, 8091, 8093, 8176

Features of 1000 series: Containing more than 99.00% aluminum, good electrical conductivity, good corrosion resistance, good welding performance, low strength, and cannot be strengthened by heat treatment.

2000 series features: Aluminum-containing alloy with copper as the main alloying element. Manganese, magnesium, lead and bismuth are also added for machinability.

Features of 3000 series: Aluminum alloy with manganese as the main alloy element, which cannot be strengthened by heat treatment, has good corrosion resistance and good welding performance. Good plasticity. (Close to super aluminum alloy).

Disadvantages: Low strength, but strength can be enhanced through cold work hardening. Coarse grains are easily produced during annealing.

The 4000 series is mainly made of silicon and is not commonly used. Some 4 series alloys can be strengthened by heat treatment, but some 4 series alloys cannot be heat treated.

Features of 5000 series: Mainly magnesium. It has good durability, good welding performance and good fatigue strength. It cannot be strengthened by heat treatment and can only be strengthened by cold working.

6000 series features: Mainly magnesium and silicon. Mg2Si is the main strengthening phase and is currently the most widely used alloy.

Features of 7000 series: Mainly zinc, but sometimes a small amount of magnesium and copper are added. Among them, superhard aluminum alloy is an alloy containing zinc, lead, magnesium and copper that is close to the hardness of steel. The extrusion speed is slower than that of 6 series alloys and the welding performance is good. 7005 and 7075 are the highest grades in the 7 series and can be strengthened by heat treatment.

Most applications of 8000 series are aluminum foil, and are less commonly used in the production of aluminum rods.

9000 series (spare alloy)

2. Classification by processing technology

3. Typical uses of various aluminum alloys

1050 Extruded coils for food, chemical and brewing industries, various hoses, fireworks powder

1060 is used in situations where high corrosion resistance and formability are required, but strength is not required. Chemical equipment is a typical use.

1100 is used for processing parts and components that require good formability and high corrosion resistance but do not require high strength, such as chemical products, food industry equipment and storage containers, thin plate processing parts, deep drawing or spinning concave vessels, Welded parts, heat exchangers, printed boards, nameplates, reflective equipment

1145 Packaging and insulating aluminum foil, heat exchangers

1199 Electrolytic capacitor foil, optical reflective deposited film

1350 Wires, conductive stranded wires, bus bars, transformer strips

2011 Screws and machining products requiring good cutting performance

2014 Used in applications requiring high strength and hardness (including high temperature). Aircraft heavy-duty, forgings, thick plates and extruded materials, wheels and structural components, multi-stage rocket first-stage fuel tanks and spacecraft parts, truck frames and suspension system parts

2017 is the first 2XXX series alloy to obtain industrial application. The current application range is narrow, mainly rivets, general mechanical parts, structural and transportation structural parts, propellers and accessories

2024 Aircraft structures, rivets, missile components, truck wheels, propeller elements and other structural parts

2036 Automobile body sheet metal parts

2048 Aerospace vehicle structural parts and weapon structural parts

2124 Aerospace structural parts

2218 Aircraft engine and diesel engine pistons, aircraft engine cylinder heads, jet engine impellers and compressor rings

2219 Aerospace rocket welding oxidizer tank, supersonic aircraft skin and structural parts, operating temperature is -270~300℃. Good weldability, high fracture toughness, T8 state has high resistance to stress corrosion cracking

2319 Welding rod and filler solder for drawing 2219 alloy

2618 Die forgings and free forgings. Pistons and aircraft engine parts

2A01 Structural rivets with operating temperature less than or equal to 100℃

2A02 Axial compressor blades for turbojet engines with operating temperatures of 200~300℃

2A06 Aircraft structure with working temperature 150~250℃ and aircraft structure rivets with working temperature 125~250℃

2A10 has higher strength than 2A01 alloy and is used to manufacture aircraft structural rivets with operating temperatures less than or equal to 100°C.

2A11 Medium-strength structural parts of aircraft, propeller blades, transportation vehicles and building structural parts. Medium strength bolts and rivets for aircraft

2A12 Aircraft skins, bulkheads, wing ribs, wing spars, rivets, etc., construction and transportation structural parts

2A14 Free forgings and die forgings with complex shapes

2A16 Aerospace aircraft parts with working temperature of 250~300℃, welded containers and airtight cockpits working at room temperature and high temperature

2A17 Aircraft parts with operating temperature 225~250℃

2A50 Medium-strength parts with complex shapes

2A60 aircraft engine compressor wheel, guide wheel, fan, impeller, etc.

2A70 aircraft skin, aircraft engine pistons, guide wheels, wheel discs, etc.

2A80 Aeroengine compressor blades, impellers, pistons, expansion rings and other parts with high operating temperatures

2A90 aircraft engine piston

3003 is used for processing parts and components that require good formability, high corrosion resistance and good weldability, or that require both these properties and higher strength than 1XXX series alloys, such as kitchen utensils, food and chemical product processing and storage devices, tanks and tanks for transporting liquid products, various pressure vessels and pipes made of thin plates

3004 all-aluminum can body, requiring higher strength parts than 3003 alloy, chemical product production and storage equipment, thin plate processing parts, construction processing parts, construction tools, various lighting parts

3105 Room partitions, baffles, mobile house panels, gutters and downpipes, thin plate formed parts, bottle caps, bottle stoppers, etc.

3A21 Aircraft fuel tanks, oil pipes, rivet wires, etc.; building materials, food and other industrial equipment, etc.

5005 is similar to 3003 alloy, with medium strength and good corrosion resistance. Used as conductors, cookware, instrument panels, shells and architectural decorations. The anodized film is brighter than that on 3003 alloy and harmonizes with the color tone of 6063 alloy

5050 thin plates can be used as lining plates for refrigerators and refrigerators, automobile air pipes, oil pipes and agricultural irrigation pipes; they can also be processed into thick plates, pipes, bars, special-shaped materials and wires, etc.

5052 This alloy has good formability, corrosion resistance, burnability, fatigue strength and moderate static strength. It is used to manufacture aircraft fuel tanks, oil pipes, as well as sheet metal parts of transportation vehicles and ships, instruments, street lamp brackets and rivets. , hardware products, etc.

5056 magnesium alloy and cable sheath rivets, zippers, nails, etc.; aluminum-clad wire is widely used in processing agricultural insect trap covers and other occasions where high corrosion resistance is required

5083 is used in applications that require high corrosion resistance, good weldability and medium strength, such as ship, automobile and aircraft plate welding parts; pressure vessels, refrigeration devices, television towers, drilling equipment, transportation that require strict fire protection. Transport equipment, missile components, armor, etc.

5086 is used in applications that require high corrosion resistance, good weldability and medium strength, such as ships, automobiles, aircraft, cryogenic equipment, television towers, drilling equipment, transportation equipment, missile parts and decks, etc.

5154 Welded structures, storage tanks, pressure vessels, ship structures and offshore facilities, transportation tanks

5182 thin plate is used to process can lids, automobile body panels, control panels, reinforcements, brackets and other parts

5252 is used to manufacture decorative parts with higher strength, such as decorative parts for automobiles. A bright and transparent oxide film after anodization

5254 Hydrogen peroxide and other chemical product containers

5356 Welding aluminum-magnesium alloy electrodes and wires with a magnesium content greater than 3%

5454 Welded structures, pressure vessels, marine facility pipelines

5456 Armor plates, high-strength welded structures, storage tanks, pressure vessels, ship materials

5457 Polished and anodized decorative parts for automobiles and other equipment

5652 Storage containers for hydrogen peroxide and other chemical products

5657 Polished and anodized decorative parts for automobiles and other equipment, but in any case it must be ensured that the material has a fine grain structure

5A02 Aircraft fuel tanks and conduits, welding wires, rivets, ship structural parts

5A03 medium strength welded structures, cold stamped parts, welding containers, welding wires, can be used to replace 5A02 alloy

5A05 welded structural parts, aircraft skin frame

5A06 Welded structure, cold die forging parts, welded drawn vessel stress parts, aircraft skin parts

5A12 welded structural parts, bulletproof deck

6005 extruded profiles and pipes, used for structural parts requiring strength greater than 6063 alloy, such as ladders, TV antennas, etc.

6009 Auto body panels

6010 Thin Plate: Automobile Body

6061 Various industrial structures that require certain strength, weldability and high corrosion resistance, such as tubes, rods, shapes, etc. for manufacturing trucks, tower buildings, ships, trams, fixtures, mechanical parts, precision machining, etc. plate

6063 Construction profiles, irrigation pipes and extruded materials for vehicles, stands, furniture, fences, etc.

6066 Forgings and welded structural extrusion materials

6070 Extruded materials and pipes for heavy-duty welded structures and the automotive industry

6101 High-strength rods, electrical conductors and heat dissipation equipment for buses, etc.

6151 is used for die forging crankshaft parts, machine parts and production of rolling rings, for applications that require both good forgeability, high strength and good corrosion resistance.

6201 High strength conductive rods and wires

6205 Thick plates, pedals and high-impact extrusions

6262 Threaded, high-stress parts requiring better corrosion resistance than 2011 and 2017 alloys

6351 Extruded structural parts of vehicles, pipelines for water, oil, etc.

6463 Construction and various appliance profiles, as well as automobile decorative parts with bright surfaces after anodization

6A02 Aircraft engine parts, complex-shaped forgings and die forgings

7005 extruded materials, used to manufacture welded structures that require both high strength and high fracture toughness, such as trusses, rods, and containers for transportation vehicles; large heat exchangers, and those that cannot be solid solution treated after welding components; can also be used to make sports equipment such as tennis rackets and softball bats

7039 Freezing containers, cryogenic equipment and storage boxes, fire-fighting pressure equipment, military equipment, armor plates, missile devices

7049 is used for forging parts that have the same static strength as 7079-T6 alloy but require high resistance to stress corrosion cracking, such as aircraft and missile parts - landing gear hydraulic cylinders and extrusions. The fatigue properties of the part are roughly equal to those of the 7075-T6 alloy, while the toughness is slightly higher

7050 Medium and thick plates, extrusions, free forgings and die forgings for aircraft structural parts. The requirements for alloys in manufacturing such parts are: high resistance to spalling corrosion, stress corrosion cracking, fracture toughness and fatigue resistance.

7072 Air conditioner aluminum foil and extra thin strip; 2219, 3003, 3004, 5050, 5052, 5154, 6061, 7075, 7475, 7178 alloy plates and pipe coatings

7075 is used in the manufacture of aircraft structures and futures, high-stress structural parts and mold manufacturing that require high strength and strong corrosion resistance.

7175 is used for forging high-strength structures for aircraft. T736 material has good comprehensive properties, that is, high strength, resistance to spalling corrosion and stress corrosion cracking, fracture toughness, and fatigue strength.

7178 Parts for manufacturing aerospace vehicles that require high compressive yield strength

7475 Aluminum-clad and non-aluminum-clad plates for fuselage, wing frames, stringers, etc. Other parts that require both high strength and high fracture toughness

7A04 Aircraft skin, screws, and stressed components such as beam stringers, bulkheads, wing ribs, landing gear, etc.