Summary - Performance characteristics of aluminum and aluminum alloy processed products


Performance characteristics

Use example



Industrial high purity aluminum


LG1, LG2, LG3, LG4, LG5

Industrial high-purity aluminum is equivalent to the former Soviet brand AB2, AB1, AB0, AB00, AB000

Mainly used in the production of various electrolytic capacitor foils, acid-resistant containers, etc., products have plates, strips, foils, tubes, etc.

Industrial pure aluminum

1060, 1050A, 1035, 8A06

L2, L3, L4, L6

Industrial pure aluminum has the characteristics of high plasticity, corrosion resistance, electrical conductivity and thermal conductivity, but its strength is low, it cannot be strengthened by heat treatment, and the machinability is not good. Acceptable contact welding, gas welding

More use of its characteristics to manufacture some structural parts with specific properties, such as aluminum foil gaskets and capacitors, electronic tube isolation nets, wire and cable protective covers, nets, cores and aircraft ventilation system parts and decorative parts



The characteristics are similar to the above, but the Fe and Si impurity content is strictly controlled, and the process and heat treatment conditions are special.

Mainly used as a plate for pure aluminum diaphragms in the aerospace industry and weapons industry.



Low strength, but excellent ductility, formability, weldability and corrosion resistance

Production of sheet metal, suitable for making all kinds of deep stamping products

Coated aluminum

7A01, 1A50

LB1, LB2

Is an aluminum alloy plated alloy of hard aluminum alloy and super hard aluminum alloy

7A01 is used for super-hard aluminum alloy sheet coating, 1A50 is used for hard aluminum alloy sheet coating

Anti-rust aluminum



It is aluminum-magnesium rust-proof aluminum with high strength, plasticity and corrosion resistance, high fatigue strength, heat treatment can not be strengthened, can be welded by welding hydrogen atom welding, can be cut in cold work state, and annealed state Poor machinability, polishable

Structural parts and conduits for working in oil media, medium-loaded parts, decorative parts, welding rods, rivets, etc.



Aluminum-magnesium rust-proof aluminum performance is similar to 5A02, but the weldability is better than 5A02, gas welding, argon arc welding, spot welding, seam welding

Medium load parts, weldments, cold stampings working in liquid media

5A05, 5B05

LF5, LF10

Aluminum-magnesium-based anti-rust aluminum, high corrosion resistance, strength similar to 5A03, can not be heat-treated, plasticity in the annealed state, semi-cold hardening state can be cut, can be argon atom welding, spot welding, gas welding, argon arc welding

5A05 is used for parts working in liquid environment, such as pipes, containers, etc. 5B05 is used as a rivet for connecting aluminum alloy and magnesium alloy. The rivet should be annealed and anodized.



Aluminum-magnesium-based anti-rust aluminum, high strength, high corrosion resistance, good plasticity and machinability under annealing and extrusion, argon arc welding, gas welding, spot welding

Welding containers, force parts, skeletons and parts of the aviation industry, aircraft skins



High magnesium content, good strength, and plasticity in extruded state

Multi-purpose a variety of plates, bars and profiles for the aerospace industry and the radio industry

5B06, 5A13, 5A33

LF14, LF13, LF33

High magnesium content, and adding appropriate amounts of Ti, Be, Zr and other elements to make the alloy more weldable

Alloys used in the manufacture of various electrodes



Aluminum, magnesium, and alloy, low cost and good plasticity

Mostly used in civilian products, such as aluminum products, utensils, utensils



Aluminum-manganese alloy, low strength, high plasticity in annealed state, low plasticity in cold work hardening state, good corrosion resistance, good weldability, non-heat treatment strengthening, is one of the most widely used rust-proof aluminum

Low-load parts used in liquids or other media, such as fuel tanks, conduits, and various shaped containers

5083, 5056

LF4, LF5-1

Aluminum-magnesium-based high-magnesium alloy, imported from the United States 5083 and 5056 alloys, good strength, corrosion resistance, good machinability in non-heat treatable alloys, beautiful appearance in anodizing treatment, and good weldability

Widely used in ships, automobiles, airplanes, missiles, etc., civilians use to produce bicycles and fenders, and 5056 is also made into structural parts such as pipe fittings.




Low strength, high plasticity, low corrosion resistance, good spot welding, good machinability, good process performance, anodizing first when making rivets

The most important riveting material for the manufacture of medium-strength structural rivets with operating temperatures below 100 °C



High strength, high heat strength, heat treatment strengthening, corrosion resistance, stress corrosion failure tendency, good machinability, mostly used in artificial aging

It is a main load-bearing structural material used as impeller and forgings under high temperature (200~300 °C) working conditions.



High shear strength and heat resistance, good plasticity in annealing and quenching (within 4~6h), good machinability after quenching and cold work hardening, poor corrosion resistance, need to be anodized, is a main rivet alloy

Used to manufacture rivets at 125-250 ° C working conditions

2B11, 2B12

LY8, LY9

Medium shear strength, good plasticity under annealing and quenching conditions, heat treatment strengthening, high shear strength

Used as medium-strength rivets, but must be used within 2 hours of quenching for high-strength rivets, but must be used within 20 minutes of quenching

Hard aluminum



The shear strength is high, the weldability is general, and there is a tendency to crack with gas welding and argon arc welding, but the spot welding property is good, and the corrosion resistance is similar to that of 2A01 and 2A11, and the rivet is not limited by the time after heat treatment, which is superior. Where but need to be anodized and filled with potassium dichromate

Used as a high-strength rivet with a working problem below 100 °C, can replace alloys such as 2A01, 2B12, 2A11, 2A12



Generally known as standard hard aluminum, medium strength, good spot weldability, cracking tendency when used for soldering and argon arc welding, heat treatment strengthening, use in quenching and natural aging conditions, corrosion resistance is not high, Aluminum, anodizing and coatings are used for surface protection, and the annealed state has poor machinability and good quenching time.

Used as medium strength parts, air propeller blades, bolt rivets, etc., used as rivets should be used within 2 hours after quenching



High-strength hard aluminum, good spot weldability, argon arc welding and gas welding have crack tendency, and the machinability in the annealed state is acceptable. It can be used for heat treatment strengthening, poor corrosion resistance, and commonly used aluminum, anodizing and coating to improve corrosion resistance.

Used to manufacture high-load parts, aircraft frames, sashes, spars, ribs, skins, etc., operating at temperatures below 150 °C



High-strength hard aluminum and spot weldability are similar to 2A12. Argon arc welding is better than 2A12. Corrosion resistance is also the same as that of 2A12. When heated to below 250 °C, the intergranular corrosion tendency is smaller than 2A12, and quenching and aging treatment can be performed. Pressure processing and machinability are the same as 2A12

It can be used as a structural plate under working conditions of 150-250 °C, but it is not suitable for use under high temperature and long-term heating conditions for quenching and natural hardening after cold aging.



It is a heat-resistant hard aluminum, which has high creep strength at high temperature, and the alloy has high plasticity in the hot state; no extruding effect, good machinability, heat treatment strengthening, good welding performance, spot welding, Roll welding and argon arc welding, but the weld corrosion stability is poor, should be anodized

Parts for working at high temperatures (250-350 ° C), such as compressor blade discs and welded parts, such as containers



Composition and properties are similar to 2A16; 2A17 has a permanent strength of more than 2A16 at normal temperature and 225 °C, but less than 2A16 at 225-300 °C, 2A17 cannot be welded

Forgings and stampings requiring high strength at 20-300 ° C

Super hard aluminum



Medium strength, high plasticity in annealing and hot state, good plasticity after quenching natural aging. In this state, the corrosion resistance can be compared with 5A2 and 3A21, and the alloy has an intergranular corrosion tendency in artificial aging, which is good after machinability. , after annealing is not good, alloy can be spot welding, argon atom welding, gas welding

Manufacture of forgings and die forgings that are subjected to medium loads, require high plasticity and high corrosivity, and have complex shapes, such as engine crankcases, helicopter blades



Al-Mg-Si alloy, which has a lower tendency to intergranular corrosion than 6A02

Used in electronics industry packing boards and various housings



It is an Al-Mg-Si alloy which is transformed from American 6070 alloy and has good corrosion resistance and good welding performance.

Can be used to manufacture large welded structural parts, advanced diving boards, etc.



It has high plasticity in hot state and is easy to forge and punch. High strength, similar to hard aluminum during quenching and artificial aging, good process performance, but extrusion effect, so the vertical and horizontal properties are different, corrosion resistance is good, but there is a tendency of intergranular corrosion, machinability Good, good for contact welding and seam welding, but poor performance for arc welding and gas welding

For the manufacture of forgings and stampings requiring medium strength and complex shapes



The performance and composition are similar to those of 2A50. They are interchangeable and versatile, but their plasticity is better than 2A50 in hot state.

Manufacture of complex forgings



It has high plasticity in the hot state, no extrusion effect, heat treatment and strengthening. The composition is similar to 2A50, but the structure is slightly better than 2A80. It is heat-resistant forged aluminum, its corrosion resistance and machinability are good, contact welding and seam welding. Good performance, poor arc welding and gas welding performance

Forgings used in the manufacture of high temperature environments, such as internal combustion engine pistons and some complex parts such as impellers and plates can be used to manufacture welded stamped structural parts at high temperatures.



It has low plasticity in hot state, can be strengthened by heat treatment of Jingxin, high temperature strength, heat-resistant forged aluminum, no extrusion effect, weldability is the same as LD7, corrosion resistance, good machinability, stress corrosion tendency

Use similar to 2A70



It has good heat strength, good plasticity in hot state, heat treatment strengthening, corrosion resistance, weldability and machinability similar to 2A70. It is an early application of heat-resistant wrought aluminum.

The use is similar to 2A7 and 2A8, and is gradually replaced by 2A70 and 2A80.



Compared with A250, the copper content is higher, so the strength is higher, the heat strength is better, the plasticity of the hot state is good, the machinability is good, the contact welding and the welding performance are good, and the arc welding and the gas welding performance are not good. Corrosion resistance is not high, artificial aging has a tendency to intergranular corrosion, heat treatment can be strengthened, there is a squeezing effect, so the vertical and horizontal properties are different

For the manufacture of forgings that are subjected to high loads and simple shapes



Al-Cu-Mg-Si alloy, which is transformed from the former Soviet Union AK9 alloy, can be forged, castable, has good thermal strength, small coefficient of linear expansion and good anti-wear performance.

Mainly used in the manufacture of steam engine pistons and cylinder materials

6061, 6063

LD30, LD31

It is an Al-Mg-Si alloy, which is equivalent to American 6061 and 6063 alloys. It has medium strength, excellent weldability, good corrosion resistance and cold workability. It is a widely used and promising alloy.

Widely used in construction industry such as doors and windows, gantry and other structural parts and medical offices, vehicles, ships, machinery, etc.



Rivet alloy, quenching artificial aging condition can be riveted, heat treatment strengthened, high shear strength, corrosion resistance and machinability are good, rivet riveting, not subject to heat treatment time limit

Used as a bearing structure rivet, working at 125 ° C, can be used as 2A10 rivet alloy substitute



It is a high-strength alloy. It can be plasticized in the quenched and degraded state. It can be heat-treated and strengthened. It is usually used under quenching and artificial aging. The strength obtained is much higher than that of ordinary hard aluminum, but the plasticity is low. Alloy spot welding Good properties, poor gas welding, good machinability after heat treatment, but poor machinability after annealing

Used to manufacture main load-bearing structural members, such as girders, purlins, reinforcing frames, skins, ribs, joints, landing gear, etc.



It is a high-strength aluminum alloy. The plasticity in the annealed and quenched state is slightly lower than the same state of 2A12, slightly better than 7A04. The static fatigue and notch sensitivity of the sheet are better than the 7A04.

Manufacturing structural parts such as aircraft skins and main force parts



Al-Cu-Mg-Zn alloy

Mainly produces plates, pipe fittings and forgings for textile industry and bulletproof materials



It belongs to Al-Cu-Mn-Zn alloy and is transformed from Japan's 7003 alloy. It has good comprehensive mechanical properties and good corrosion resistance.

Mainly used to make profiles and produce bicycle rims

Special aluminum



Aluminum-silicon alloy, high corrosion resistance, good pressure workability, poor mechanical strength

Used to make welding rods and welding rods

4A13, 4A17

LT13, LT17

Al-Si alloy

Mainly used for brazing sheets, strips for strips, or for direct production of strip foils and wire bonds



Special high-magnesium alloy with high impact resistance

Used to make aircraft cockpit bulletproof panels



High-purity aluminum-magnesium alloy, equivalent to 5A02, its impurity content is strictly controlled

Mostly used in the production of high-end jewelry, such as pen sets, signs, etc.

专栏:Industry information
作者: 佚名
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