Ⅰ:The most detailed aluminum alloy knowledge

Based on years of factory production experience, this article summarizes the classification of 1000 2000 3000 4000 5000 6000 7000 8000 series aluminum alloys and the performance characteristics of the alloys to help every buyer better understand aluminum alloy products.

Remarks: A. Non-heat-treated alloy; B. Heat-treated alloy

Ⅱ:The chemical composition and performance of each aluminum alloy series

(1) 1xxx series aluminum alloy

1. Features and scope of application:

1××× series is formed by adding a small amount of copper element to pure aluminum, which has excellent forming and processing characteristics, high corrosion resistance, good weldability and
conductivity. 1××× series aluminum alloys are widely used in products that do not require high strength, such as chemical equipment, thin plate processing parts, deep drawing or spinning concave
Shaped utensils, welding parts, heat exchangers, clock surfaces and disks, nameplates, kitchen utensils, decorations, reflective appliances, etc. Among them, the most widely used
Brands: 1050, 1060, 1070, 1100.
2. Grade and chemical composition list:
(expressed as highest percentage unless a range value is listed)

3. 1000 series alloy mechanical and physical properties:

Note: Sample size: aluminum plate, the above is the transverse mechanical properties of aluminum plate
4. Factory state: H112, H24, O state, etc.

(2)2xxx series aluminum alloy

1. Features and scope of application:
The 2××× series is a typical hard aluminum alloy in the Al-Cu-Mg system. Its composition is relatively reasonable, and its comprehensive performance is good. It is the largest amount of hard aluminum.
The characteristics of this alloy are: high strength, certain heat resistance, and can be used as working parts below 150°C. The temperature is higher than 125°C, and its strength ratio is 7075
Alloys are even higher. The formability is relatively good in the hot state, annealed and new quenched state, and the strengthening effect of heat treatment is remarkable, but the heat treatment process requires
strict. Corrosion resistance is poor, but it can be effectively protected by covering it with pure aluminum; cracks are easy to occur during welding, but it can be welded with a special process, and it is also
Can be riveted. Widely used in aircraft structures, rivets, truck wheels, propeller elements and other components, especially under the wing and fuselage structure
to the place of tension. Among them, the more widely used grades: 2024 (2A12), LY12, LY11, 2A11, 2A14 (LD10), 2017, 2A17
wait.
2. Grade and chemical composition list:
(expressed as highest percentage unless a range value is listed)

3. 2000 series alloy mechanical and physical properties:

Note: Sample size: aluminum plate, the above is the transverse mechanical properties of aluminum plate at room temperature
4. 2 series factory temper: H112, T4, T351, T6 temper

(3)3xxx series aluminum alloy

1. Features and scope of application:

3××× series are AL-Mn series alloys, which are the most widely used anti-rust aluminum. The strength of this alloy is not high (slightly higher than industrial pure aluminum).
It cannot be strengthened by heat treatment, so cold working method is used to improve its mechanical properties; it has high plasticity in the annealed state, and plasticity in semi-cold work hardening
Good toughness, low plasticity when cold work hardening, good corrosion resistance, good weldability, poor machinability. Mainly used for demanding plasticity and good
Weldability, low-load parts working in liquid or gaseous media, such as fuel tanks, gasoline or lubricating oil conduits, various liquid containers and other uses
Small load parts made by deep drawing; wire used to make rivets. 3××× series aluminum plates have good formability, weldability and corrosion resistance. for processing needs
To have good formability, high corrosion resistance and good weldability parts, or require both these properties and more than 1××× series alloys
High-intensity work, such as kitchen utensils, food and chemical product processing and storage devices, tanks and tanks for transporting liquid products, various presses processed with thin plates
Pressure vessels and pipes, general utensils, heat sinks, cosmetic boards, photocopier rollers, and ship materials.

2. Grade and chemical composition list

 

3. 3000 series alloy mechanical and physical properties:

4. 3 series factory temper: H112, H24,O temper

(4)5xxx series aluminum alloy

1. Features and scope of application:

5××× series are high-magnesium alloys, which have good strength, corrosion resistance and machinability among non-heat-treatable alloys. Surface after anodizing
beautiful. Arc welding performance is good. The main alloying element in 5××× series alloys is magnesium, which has good corrosion resistance and weldability, and
medium strength. Excellent corrosion resistance makes 5××× series alloys widely used in marine applications such as ships, as well as automobiles, aircraft weldments, subway
Light rail, pressure vessels that require strict fire protection (such as liquid tank cars, refrigerated vehicles, and refrigerated containers), refrigeration devices, TV towers, drilling equipment, transportation
Transport equipment, missile parts, armor, etc. Among them, the more widely used grades: 5A06, 5A05, 5083, 5754, 5052, 5005, 5086,
5182 etc.

2. Grade and chemical composition list:

 

3. 5000 series alloy mechanical and physical properties:

4. 5 series factory temper: H32,H111,H112, H24,O temper

(5)6xxx series aluminum alloy

1. Features and scope of application:

The 6××× series are alloys that can be strengthened by heat treatment, and have good formability, weldability, machinability, and moderate strength.
degree, it can still maintain good operability after annealing.
The main alloying elements of 6××× series alloys are magnesium and silicon AlMgSi1Cu, and form Mg2Si phase. If it contains a certain amount of manganese and chromium, it can be
To neutralize the bad effect of iron; sometimes a small amount of copper or zinc is added to increase the strength of the alloy without significantly reducing its corrosion resistance; conduct electricity
There is also a small amount of copper in the material to offset the adverse effects of titanium and iron on conductivity; zirconium or titanium can refine the grain and control the recrystallization structure; in order to improve
Good machinability, lead and bismuth can be added. The solid solution of Mg2Si in aluminum makes the alloy have the function of artificial age hardening.
6061-T651 is the main alloy in the 6××× series of alloys. It is a high-quality aluminum alloy product produced by heat treatment and pre-stretching process. Its strength
Although it cannot be compared with 2××× series or 7××× series, it has many characteristics of magnesium and silicon alloys, excellent processing performance, excellent welding characteristics and electric resistance.
Plating properties, good corrosion resistance, high toughness and no deformation after processing, dense material without defects and easy polishing, easy color film, excellent oxidation effect
Good and other excellent features. 6××× aluminum-silicon alloys are widely used grades: 6082, 6063 (LD31), 6061 (LD30), 6A02, etc.

2. 6000 grade and chemical composition list:

 

Alloy	Chemical Composition (Mass Fraction) (%)
	Si	Fe	Cu	Mn	Mg	Cr	Zn	Ti	Others		Al
									Each	Total
6A02	0.5-1.2	0.5	0.2-0.6	0.15-0.35	0.45-0.9	/	0.2	0.15	0.05	0.1	Remain
6B02	0.7-1.1	0.4	0.1-0.4	0.1-0.3	0.4-0.8	/	0.15	0.01-0.04	0.05	0.1	Remain
6A51	0.5-0.7	0.5	0.15-0.35	/	0.45-0.6	0.1	0.25	0.01-0.04	0.05	0.1	Remain
6101	0.3-0.7	0.7	0.25	1.0-1.5	0.8-1.3	/	0.25	/	0.05	0.15	Remain
6101A	0.6	0.7	0.3	1.0-1.5	0.2-0.6	0.1	0.25	0.1	0.05	0.15	Remain
6005	0.6	0.7	0.3	0.3-0.8	0.2-0.8	0.2	0.4	0.1	0.05	0.15	Remain
6005A	0.5-1.9	0.35	0.3	0.1	0.4-0.7	0.3	0.2	0.1	0.05	0.15	Remain
6351	0.7-1.3	0.5	0.1	0.4-0.8	0.4-0.8	/	0.2	0.2	0.05	0.15	Remain
6060	0.3-0.6	0.1-0.3	0.1	0.1	0.35-0.6	0.05	0.15	0.1	0.05	0.15	Remain
6061	0.4-0.8	0.7	0.15-0.40	0.15	0.8-1.2	0.04-0.35	0.25	0.15	0.05	0.15	Remain
6063	0.2-0.6	0.35	0.1	0.1	0.45-0.9	0.1	0.1	0.1	0.05	0.15	Remain
6063A	0.3-0.6	0.15-0.35	0.1	0.15	0.6-0.9	0.05	0.15	0.1	0.05	0.15	Remain
6070	1.0-1.7	0.5	0.15-0.40	0.4-1.0	0.5-1.2	0.1	0.25	0.15	0.05	0.15	Remain
6181	0.8-1.2	0.45	0.1	0.15-0.6	0.6-1.0	0.1	0.2	0.1	0.05	0.15	Remain
6082	0.7-1.3	0.5	0.1	0.4-1.0	0.6-1.2	0.25	0.2	0.1	0.05	0.15	Remain

3. 6000 series alloy mechanical and physical properties:

4. 6 series factory temper: H32,H111,H112, H24,O temper

(6)7xxx series aluminum alloy

1. Features and scope of application:

7××× aluminum alloy is another commonly used alloy with a wide variety. It contains zinc and magnesium. The strongest strength among common aluminum alloys
It is 7075 alloy, but it cannot be welded, and its corrosion resistance is quite poor, and many parts manufactured by CNC cutting use
7075 alloy. Zinc is the main alloying element in this series, and the addition of a small amount of magnesium alloy allows the material to be heat treated to achieve very high strength properties.
These series of materials are generally added with a small amount of alloys such as copper and chromium, among which the number 7075 aluminum alloy is especially top-grade, with the highest strength and suitable for aircraft structures.
Racks and high-strength accessories.
7075 is an Al-Zn-Mg-Cu super duralumin alloy, which was used in the aircraft manufacturing industry in the late 1940s and is still used in the aviation industry today.
Ultra-high strength wrought aluminum alloy widely used in the industry. Its characteristic is that it has good plasticity after solution treatment, and the strengthening effect of heat treatment is particularly good.
The following have high strength, and have particularly good low temperature strength; poor welding performance; tend to stress corrosion cracking; need to be covered with aluminum or other protective treatment
Reasonable use. Dual-stage aging can improve the alloy’s ability to resist stress corrosion cracking. The plasticity in the annealed and as-quenched state is slightly lower than that in the same state
2A12, slightly better than 7A04, the static fatigue of the plate is notch sensitive, and the stress corrosion performance is better than 7A04.
7××× aluminum-zinc alloys are widely used grades: 7075, 7A04 (LC4), 7A09 (LC9), 7A52, 7A05, etc.

2. 7000 grade and chemical composition list:

 

3. 7000 series alloy mechanical and physical properties:

Typical Mechanical Properties of Aluminum Alloys