Aluminum grades and classifications
According to the content of aluminum and other elements in the aluminum alloy:
(1) Pure aluminum: Pure aluminum is divided into three categories according to its purity: high-purity aluminum, industrial high-purity aluminum and industrial-purity aluminum. Welding is mainly industrial pure aluminum, the purity of industrial pure aluminum is 99.7% to 98.8%, and its grades are L1. L2. L3. L4. L5. L6.
(2) Aluminum alloy: Alloy is obtained by adding alloying elements to pure aluminum. According to the processing characteristics of aluminum alloys, they can be divided into two types: deformed aluminum alloys and cast aluminum alloys.
The deformed aluminum alloy has good plasticity and is suitable for pressure processing.
Deformed aluminum alloys can be divided into four types: anti-rust aluminum (LF), hard aluminum (LY), super hard aluminum (LC) and forged aluminum (LD) according to their performance characteristics and uses.
Cast aluminum alloys are divided into four types: aluminum-silicon (AL-Si), aluminum-copper (Al-Cu), aluminum-magnesium (Al-Mg) and aluminum-zinc (Al-Zn) based on the main alloying elements added.
The main aluminum alloy grades are: 1024.2011.6060, 6063.6061.6082.7075
Aluminum grades:
1××× series: pure aluminum (aluminum content not less than 99.00%)
2××× series: aluminum alloy with copper as the main alloying element
3××× series: aluminum alloy with manganese as the main alloying element
4××× series: aluminum alloy with silicon as the main alloying element
5××× series: aluminum alloy with magnesium as the main alloying element
The 6××× series: aluminum alloys with magnesium as the main alloying element and Mg2Si phase as the strengthening phase
7××× series: aluminum alloy with zinc as the main alloying element
The 8××× series: aluminum alloys with other elements as the main alloying elements
9××× series: spare alloy group
The second letter of the grade represents the modification of the original pure aluminum or aluminum alloy, and the last two digits represent the last two digits of the grade to identify different aluminum alloys in the same group or to indicate the purity of aluminum.
The last two digits of the 1××× series grades are expressed as: the percentage of the minimum aluminum content. The second letter of the grade indicates a modification of the original pure aluminum.
The last two digits of the 2×××～8××× series grades have no special meaning and are only used to distinguish: different aluminum alloys in the same group. The second letter of the grade indicates a modification of the original pure aluminum.
*Condition of aluminum and aluminum alloys:
Code F×× is: free machining state O×× is: annealing state H×× is: work hardening state W×× is: solution heat treatment state T×× is: heat treatment state (different from F, O, H state) *HXX's subdivision state: The first digit after H indicates: the basic processing procedure to obtain this state, as shown below.
H1: Simple work hardening state H2: Work hardening and incomplete annealing state H3: Work hardening and stabilization treatment state H4: Work hardening and painting treatment state The second digit after H: Indicates the degree of work hardening of the product . Such as: 0 to 9 means that the degree of work hardening is getting harder and harder.
*Rolling of aluminum alloy plates and strips: According to the rolling temperature, it can be divided into hot rolling, warm rolling (medium temperature rolling) and cold rolling. According to the arrangement of rolling mills, it can be divided into single-stand rolling, semi-continuous rolling and continuous rolling. .
*Thickness classification of aluminum coils:
Thicker than 80mm is called extra-thick plate; thickness of 4-80mm is called thick plate; thickness of 0.2-4.0mm is called thin plate; thickness of less than 0.2mm is called aluminum foil
*Calculation method of aluminum coil length: weight 1000kg ÷ aluminum density (2.71) ÷ width ÷ thickness = length per ton of aluminum coil
*MOQ for special-shaped aluminum coils: 6-8 tons of aluminum per furnace, and 6-8 tons of aluminum coils
*Identification of the quality of color-coated aluminum coils: Surface indentations, imprints, bumps and other residues: no obvious leakage, damage to the coating, etc.: not allowed corrugation: not allowed to bubble (≤10mm): not allowed Defects (≤3mm): ≤3mm pieces/m2 Scratches: No scratches: No Color difference: not obvious
Aluminum alloy material properties and uses:
One. JIS A.A 1000 series - pure aluminum series
1. 1060 as a conductive material IACS guarantees 61%, and 6061 wire is used when strength is required
2. 1085 1080 1070 1050 1N30 1085 1080 1070 1050 — Good formability and surface treatment, and its corrosion resistance is the best among aluminum alloys. Because it is pure aluminum, its strength is low, and the higher the purity, the lower the strength. Daily necessities, aluminum plates, lighting fixtures, reflectors, decorations, chemical industry containers, heat sinks, welding wires, conductive materials
3. 1100 1200 AL general-purpose aluminum with a purity of more than 99.0%, the appearance after anodizing treatment is slightly white and the same as the above. General utensils, heat sinks, bottle caps, printed boards, building materials, heat exchanger components 1N00 - slightly higher strength than 1100, good formability, and the same chemical properties as 1100.
Two. Daily Necessities 2000 Series - AL x Cu series
1. 2011 free-cutting alloy has good machinability and high strength. But the corrosion resistance is not good. When corrosion resistance is required, use 6062 series alloy volume shafts, optical components, and screw heads.
2. 2014 2017 2024 contains a large amount of Cu, with poor corrosion resistance, but high strength, can be used as structural materials, forged products can also be used, aircraft, gears, oil, pressure components, axles.
3. After 2117 solution heat treatment, it is an alloy that delays the aging rate at room temperature as a material for rivets.
4. 2018 2218 alloy for forging. It has good forgeability and high high temperature strength, so it is used for forgings that require heat resistance, but has poor corrosion resistance, cylinder heads, pistons, and VTR cylinders.
5. 2618 alloy for forging. Superior high temperature strength but poor corrosion resistance. Pistons, rubber molding dies, general heat-resistant components.
6. 2219 has high strength, good low temperature and high temperature properties, and excellent weldability, but poor corrosion resistance. Containers for cryogenic use, aerospace machines. 7. 2025 alloy for forging. Good forgeability and high strength, but poor corrosion resistance. Propeller, magnetic barrel. 2N01 - alloy for forging. With heat resistance, high strength, but poor corrosion resistance. Aircraft engines, hydraulic components.
Three. 3000 series - AL x Mn series
1. The strength of 3003 3203 is about 10% higher than that of 1100, and the formability, weldability and corrosion resistance are all good. General utensils, heat sinks, cosmetic panels, photocopier cylinders, marine materials
2. 3004 3104 has higher strength than 3003, superior formability and good corrosion resistance. Aluminum cans, lamp covers, roof panels, colored aluminum panels 3. 3005 3005 is about 20% higher in strength than 3003, and has better corrosion resistance. Building materials, color aluminum plate
4. The strength of 3105 3105 is slightly higher than that of 3003, and other characteristics are similar to those of 3003. Building materials, colored aluminum plates, bottle caps
Four. 4000 series - AL x Si series
1. 4032 has good heat resistance and abrasion resistance, and has a small thermal expansion coefficient. Piston, cylinder head
2. 4043 has less coagulation and shrinkage, and anodized with sulfuric acid to give a natural gray color. Dissolving wires, building panels
Five. 5000 series - AL x Mg series
1. The strength of 5005 is the same as that of 3003. It has good processability, weldability and corrosion resistance. Interior and exterior decoration for construction, vehicle interior, ship interior
2. 5052 is the most representative alloy with medium strength, good corrosion resistance, weldability and formability, especially high fatigue strength and good seawater resistance. General sheet metal, ships, vehicles, construction, bottle caps, honeycomb panels
3. 5652 limits the impurity elements of 5052 and inhibits the separation of hydrogen peroxide. Other characteristics are the same as those of 5052 for hydrogen peroxide containers.
4. The strength of 5154 is about 20% higher than that of 5052, and other characteristics are the same as those of 5052. The same as 5052, the pressure vessel
5. 5254 restricts the impurity elements of 5154 and inhibits the decomposition of hydrogen peroxide. Other characteristics are the same as 5154. Hydrogen peroxide container
6. The strength of 5454 is about 20% higher than that of 5052, and its characteristics are roughly the same as those of 5154, but its corrosion resistance in harsh environments is better than that of 5154. car wheel
7. 5056 has excellent corrosion resistance and can be modified by cutting and working surface. It has good anodic oxidation treatment and dyeing properties. Camera body, communication device unit, zipper
8. The strength of 5082 is similar to that of 5083, and the formability and corrosion resistance are good. can lid
9. The strength of 5182 is about 5% higher than that of 5082, and other characteristics are the same as 5082. can lid
10. 5083 alloy for welding structure. It is the corrosion-resistant alloy with the highest strength among practical non-heat-treated alloys, and is suitable for welding structures. Seawater resistance, good low temperature properties Ships, vehicles, low temperature vessels, pressure vessels
11. The strength of 5086 is higher than that of 5154, and it is an alloy for non-heat treatment welding structure with good seawater resistance. Ships, pressure vessels, magnetic discs 5N01 - the same strength as 3003, the anodizing treatment after the bright treatment can have a high brightness. Good formability and corrosion resistance. Kitchen utensils, cameras, decorations, aluminum plate 5N02 alloy for anchors, good seawater resistance anchors
Six. 6000 series - AL x Mg x Si series
1. Corrosion-resistant alloy of 6061 heat treatment type. Treated with T6, it can have a very high endurance value, but the strength of the welded joint is low, so it is used in screws, anchors, ships, vehicles, and land structures. , The extrusion hardenability is good, it can be used for large thin meat shapes with complex shapes, and the corrosion resistance and weldability are good. Vehicles, land structures, ships
2. 6063 is a representative alloy for extrusion. Its strength is lower than that of 6061, and its extrudability is good. It can be used for complex cross-sectional shapes. It has good corrosion resistance and surface treatment. Construction, highway guardrails, high railings, vehicles, Furniture, home appliances, decorations
3. 6101 high-strength conductive material. 55% IACS Guaranteed Wire
4. 6151 has particularly good forging processability, corrosion resistance and surface treatment, and is suitable for complex forgings. machinery, automotive components
5. 6262 corrosion-resistant free-cutting alloy has better corrosion resistance and surface treatment than 2011, and its strength is the same as 6061. Camera body, oxidizer assembly, stopper assembly, gas appliance assembly
Seven. 7000 series - AL x Zn x Mg series
1. The 7072 electrode has a low potential and is mainly used for anti-corrosion covering leather, and is also suitable for the heat sink of heat exchangers. Aluminum alloy sheet skin, heat sink
2. One of the alloys with the highest strength in 7075 aluminum alloy, but the corrosion resistance is not good. The covering with 7072 can improve its corrosion resistance, but the cost is increased. Aircraft and ski poles 7050 7050 Alloy with improved 7075 hardenability, good resistance to stress corrosion cracking, suitable for thick plates, forged aircraft, high-speed rotary bodies Back to the strength close to the base metal. Corrosion resistance is also very good. Vehicles, other land structures, aircraft
3. 7003 is an extruded alloy for welding structure. Its strength is slightly lower than that of 7N01, but its extrudability is good. It can be used as a large shape material for thin meat. Vehicle, locomotive wheel outer ring
