How to choose aluminum alloy brand for aluminum products processing?

How to choose aluminum alloy brand for aluminum products processing?

There are more than 1000 registered aluminum alloy brands in the world, and each brand has a variety of states,

There are obvious differences in hardness, strength, corrosion resistance, processability, weldability, decoration and so on

Differences between. When selecting the brand and state of aluminum alloy, it is difficult to meet the above aspects at the same time

It is not necessary. It should be set according to the product performance requirements, use environment, processing process and other factors

The priority of various properties can be selected reasonably and controlled reasonably before ensuring the performance

Manufacturing costs.

Hardness: many customers are very concerned when buying aluminum. The preferred hardness is directly related to the chemical composition of the alloy. Secondly, different states also have a great impact. From the highest hardness that can be achieved, the hardness of 7 series, 2 series, 4 series, 6 series, 5 series, 3 series and 1 Series decreases in turn.

Hardness: strength is an important factor that must be considered in product design. When it is an aluminum alloy component, the appropriate alloy should be selected according to the pressure it bears. The strength of pure aluminum is the lowest, while the hardness of 2-Series and 7-series heat-treated alloys is the highest, and there is a certain relationship between hardness and strength.

Corrosion resistance: corrosion resistance includes chemical corrosion, stress corrosion resistance and other properties.

Generally speaking, the corrosion resistance of series 1 pure aluminum is the best, series 5 performs well, followed by series 3 and 6, and series 2 and 7 are poor. The selection principle of corrosion resistance shall be determined according to the application occasion. All kinds of anti-corrosion composite materials must be used in the corrosive environment of high-strength alloy.

Machinability: machinability, insert forming performance and cutting performance. Because formability and state

About, after selecting the aluminum alloy brand, it is also necessary to record the strength range of various states, which is usually strong

High strength materials are not easy to form. If the aluminum material is to be bent, stretched, deep drawn and other forming processes,

The formability of the annealed material is the best,

On the contrary, the formability of materials in heat treatment state is the worst

The machinability of aluminum alloy is poor,

Good machinability is required for molds, mechanical parts, etc,

conversely,Those with low strength have poor machinability. For products that need cutting, such as molds and mechanical parts, aluminum

The machinability of alloy is an important consideration.

Uses of different aluminum alloy grades:

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

1060 requires high corrosion resistance and formability, but it does not require high strength. Chemical equipment is its typical use

1100 is used for processing parts that need good formability and high corrosion resistance, but do not require high strength, such as chemical products, food industrial devices and storage containers, sheet processing parts, deep drawing or spinning concave utensils, welding parts, heat exchangers, printing plates, nameplates and reflective utensils

1145 packaging and thermal insulation aluminum foil, heat exchanger

Various structural members

2036 automobile body sheet metal parts 1199 electrolytic capacitor foil, optical reflective film

1350 wire, conductive stranded wire, bus bar, transformer strip

2011 screws and machined products requiring good cutting performance

2014 is used in occasions requiring high strength and hardness (including high temperature). Aircraft heavy, forgings, thick plates and extruded materials, wheels and structural elements, first stage fuel tank of multi-stage rocket and spacecraft parts, truck frame and suspension system parts

2017 is the first 2XXX series alloy to obtain industrial application, with a narrow application range, mainly including rivets, general mechanical parts, structural parts of structures and transportation tools, propellers and accessories

2024 aircraft structure, rivets, missile components, truck hub, propeller components and others

2048 aerospace structural parts and weapon structural parts

2124 aerospace structure

2218 aircraft engine and diesel engine piston, aircraft engine cylinder head, jet engine impeller and compressor ring

2219 space rocket welding oxidant tank, skin and structural parts of supersonic aircraft, with working temperature of - 270 ~ 300 ℃. Good weldability, high fracture toughness, and high stress corrosion cracking resistance in T8 state

Electrode and filler metal for 2319 welding and drawing 2219 alloy

2618 die forgings and free forgings. Piston and Aeroengine Parts

2a01 structural rivets with working temperature less than or equal to 100 ℃

2A02 axial compressor blade of turbojet engine with working temperature of 200 ~ 300 ℃

2A06 aircraft structure with working temperature of 150 ~ 250 ℃ and aviation structure with working temperature of 125 ~ 250 ℃

structural rivet

The strength of 2a10 is higher than that of 2a01 alloy, and the rivets of aircraft structure with working temperature less than or equal to 100 ℃ are produced

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

2A12 aircraft skin, spacer, wing rib, wing beam, rivet, building structural parts and transportation tools

2A14 free forging and die forging of complex shapes

2A16 Aerospace shuttle parts with operating temperature of 250 ~ 300 ℃, welded containers and closed cockpit work at room temperature and high temperature

2a17 aircraft parts with operating temperature of 225 ~ 250 ℃

2A50 medium strength complex shape parts

2a60 aeroengine compressor impeller, wind guide wheel, fan, impeller, etc

2A70 aircraft skin, aircraft engine piston, wind guide wheel, wheel disc, etc

2A80 aeroengine compressor blades, impellers, pistons, expansion rings and other parts with high working temperature

2a90 aeroengine piston

3003 is used to process parts and components requiring good formability, high corrosion resistance and good weldability, or work requiring both these properties and higher strength than 1xxx series alloy, such as kitchen utensils, food and chemical product processing and storage devices, tanks and tanks for transporting liquid products, and various pressure vessels and pipelines processed with thin plates

3004 all aluminum can body requires parts with higher strength than 3003 alloy, chemical product production and storage device, sheet processing parts, building processing parts, building tools and various lamp parts

3105 room partition, baffle, movable room board, eaves gutter and downpipe, sheet forming parts, bottle caps, corks, 3A21 aircraft fuel tank, oil duct, rivet wire, etc; Industrial equipment such as building materials and food, etc

Similar to 3003 alloy, 5005 alloy has medium strength and good corrosion resistance. Used as conductor, cooker, instrument panel, shell and building decoration. The anodic oxide film is brighter than the oxide film on 3003 alloy and consistent with the hue of 6063 alloy5050 thin plate can be used as the lining plate of refrigerator and refrigerator, automobile gas pipe, oil pipe and agricultural irrigation pipe; It can also process thick plates, pipes, bars, special-shaped materials and wires

5052 alloy has good formability, corrosion resistance, Candlestick resistance, fatigue strength and medium static strength. It is used to manufacture aircraft fuel tank, oil pipe, sheet metal parts of traffic vehicles and ships, instruments, street lamp supports and rivets, hardware products, etc

5056 magnesium alloy and cable sheath rivets, zippers, nails, etc; Aluminum coated wires are widely used in processing agricultural insect catcher covers and other occasions where high corrosion resistance is required

5083 is used in occasions requiring high corrosion resistance, good weldability and medium strength, such as ship, automobile and aircraft plate weldments; Pressure vessels, refrigeration devices, TV towers, drilling equipment, transportation equipment, missile components, armor, etc. that need to be strictly fireproof

5086 is used in occasions requiring high corrosion resistance, good weldability and medium strength, such as ships, automobiles, aircraft, low-temperature equipment, TV towers, drilling units, transportation equipment, missile parts and decks, etc

5154 welding structure, storage tank, pressure vessel, ship structure and offshore facilities, transportation tank

5182 sheet is used for processing cans, auto body panels, control panels, stiffeners, brackets and other parts

5252 is used to manufacture decorative parts with high strength, such as decorative parts of automobiles. It has a bright and transparent oxide film after anodizing

5254 containers for hydrogen peroxide and other chemical products

5356 aluminum magnesium alloy electrode and welding wire with magnesium content greater than 3%

5454 welded structures, pressure vessels, offshore facilities, pipelines

5456 armor plate, high strength welded structure, storage tank, pressure vessel, ship material

5457 polished and anodized decorative parts for automobiles and other equipment

5652 storage containers for hydrogen peroxide and other chemical products

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

5A02 aircraft fuel tank and conduit, welding wire, rivet, ship structural parts

5A03 medium strength welding structure, cold stamping parts, welding containers and welding wires can be used to replace 5A02 alloy5A05 welded structural parts, aircraft skin skeleton

5A06 welded structure, cold die forged parts, welded tensile vessel stress parts, aircraft skin bone parts, 5A12 welded structural parts, bulletproof deck

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

6009 automobile body panel

6010 sheet: automobile body

6061 requires various industrial structures with certain strength, weldability and high corrosion resistance, such as pipes, rods, shapes and plates for manufacturing trucks, tower buildings, ships, trams, furniture, mechanical parts, precision machining, etc

6063 industrial profiles, building profiles, irrigation pipes and extruded materials for vehicles, stands, furniture, fences, etc

6066 extruded materials for forgings and welded structures

6070 heavy-duty welded structure and extruded materials and pipes for automobile industry

6101 high strength bars, electrical conductors and heat dissipation equipment for buses

6151 is used for die forging crankshaft parts, machine parts and production of rolling rings, which requires good malleability, high strength and good corrosion resistance

6201 high strength conductive bar and wire

6205 thick plate, pedal and high impact extrusion

6262 requires threaded high stress parts with corrosion resistance better than 2011 and 2017 alloys, extruded structural parts of 6351 vehicles, transmission pipelines of water, oil, etc

6463 building and various appliance profiles, as well as automobile decorative parts with bright surface after anodizing

6A02 aircraft engine parts, forgings and die forgings with complex shapes

7005 extruded materials are used to manufacture welded structures with both high strength and high fracture toughness, such as trusses, rods and containers of transportation vehicles; Large heat exchangers and parts that cannot be subject to solid fusion treatment after welding; It can also be used to manufacture sports equipment, such as tennis rackets and softball bats

7039 refrigerated containers, cryogenic instruments and storage tanks, fire pressure equipment, military equipment, armor plates, missile devices7049 for forging the same static strength and 7079-T6 alloy with high resistance to stress corrosion cracking, such as aircraft and missile parts, the fatigue performance of the landing gear hydraulic cylinder and extrusion parts is roughly the same as that 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 of alloy for manufacturing this kind of parts are: high resistance to spalling corrosion, stress corrosion cracking, fracture toughness and fatigue resistance

7072 air conditioner aluminum foil and ultra thin strip; Coating of 2219, 3003, 3004, 5050, 5052, 5154, 6061, 7075, 7475 and 7178 alloy plates and pipes

7075 is used for manufacturing aircraft structures and high stress structural parts and molds with high strength and strong corrosion resistance

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

7178 parts with high compressive yield strength for Aerospace

7475 aluminum clad and non aluminum clad plates for fuselage, wing frame, stringer, etc. Other parts with high strength and high fracture toughness

7A04 aircraft skin, screws and stressed components such as girder stringer, spacer frame, wing rib, landing gear, etc

After reading so much, many friends must be dizzy. How to choose so many brands of materials?

Let's give a general introduction according to the experience of our factory for many years.

1. Try to choose common materials, which are commonly used in the market, generally used in every extrusion plant and easy to buy by the processing plant. For example, the 6061606360056083 of extrusion profile 6 series is easy to buy, although not everyone has it. 7075 of 7 series, 5052 of plate 5 series, 2A12 of pipe 2 series, etc.

2. Special materials can also be purchased, so you need to order a furnace rod separately, at least 10 tons, 15 tons, 20 tons and 30 tons. It depends on the size of the furnace in the bar factory you choose. Generally, you can place an order directly to the profile factory. They will be responsible for ordering it and help you produce the finished product, which saves time and effort.

3. Select appropriate processing methods and materials according to their own product needs. For example, for general profiles, 6065t5 (T5 is in heat treatment state) can be selected without special hardness requirements, such as installation frame, general square tube, round tube, special-shaped square tube, aluminum tube, etc., and profiles to be processed, as well as 6061 and 6005. For details, please refer to our previous articles.

4. The shell shape can be selected from the plate. For aluminum products processed by stamping or bending, choose 5052 aluminum plate. 5052 aluminum plate has good toughness, good surface corrosion resistance, continuous bending and easy stamping. A layer of anodizing on the surface can better protect the surface from discoloration. It can also do a lot of Yang colors and pretreatment, and the surface has good aesthetics. Of course, 6061 aluminum plate can also be selected. Its hardness is higher than that of 5052. At the same time, it is easy to break. It is only suitable for the decoration of the whole plate without bending. Similarly, 6061 aluminum plate can also do beautiful surface treatment.

5. For those with high requirements on mechanical properties, 7075 aluminum alloy brand can be selected, but 7075 has high magnesium content and is more difficult to fit than 6 series, so the current technology is limited to extruding square tubes, aluminum tubes, aluminum rods and simple profiles. Can do a lot of surface treatment.

6. For stamping parts without requirements on mechanical properties, 1-series or 2-Series can be selected, such as lipstick cover, which is easy to stamping and subsequent processing.

7.2 series and 3 series are basically military materials. Generally, high-precision machined parts will be used, belonging to military materials. Many customers also choose products needed for military material processing.