6061 Aluminum Alloy Properties And Application Range
GB-GB3190-2008:6061
American Standard-ASTM-B209:6061
European standard-EN-AW: 6061 / AlMg1SiCu
6061 Aluminum alloy is a thermal reinforced alloy, with good plasticity, weldability, processability and moderate strength, after annealing can still maintain good processing performance, is a wide range of use, very promising alloy,Can be anodized oxidation coloring, can also be painted on the enamel, suitable for building decoration materials. It contains a small amount of Cu and thus the strength is higher than 6063, but the quenching sensitivity is also higher than 6063. After extrusion, wind quenching can not be realized, and re-consolidation treatment and quenching time are needed to obtain high aging.6061 The main alloy elements of aluminum are magnesium and silicon, which form the Mg2Si phase. If it contains a certain amount of manganese and chromium, it can neutralize the adverse effects of iron;A small amount of copper or zinc is sometimes added to increase the strength of the alloy without significantly reducing its corrosion resistance and a small amount of conductive material to offset the adverse effects of titanium and iron on conductivity;Zirconium or titanium can refine the grain and control the recrystallization structure; to improve processing performance, lead and bismuth can be added. Mg2Si Solid dissolved in aluminum, so that the alloy has the artificial aging hardening function.
6061 aluminum alloy has excellent properties, mainly including the following aspects:
1. High strength: 6061 aluminum alloy has high strength after appropriate heat treatment, the more common state is T6 state, its tensile strength can reach more than 300 MPa, belongs to the medium strength aluminum alloy.
2. Good processability: 6061 aluminum alloy has good machining performance, easy to cut, shape and welding, suitable for a variety of processing processes, such as milling, drilling, stamping, etc.
3. Excellent corrosion resistance: 6061 aluminum alloy has good corrosion resistance, and can show good corrosion resistance in most environments, especially in corrosive environments such as seawater.
4. Lightweight: aluminum alloy itself light weight, 6061 aluminum alloy is a lightweight material, suitable for the need to reduce the structural load of the occasions, such as aerospace and automotive manufacturing.
5. Excellent thermal and electrical conductivity: 6061 aluminum alloy has good thermal and electrical conductivity, suitable for applications that need heat dissipation or electrical conductivity, such as manufacturing heat sink and electronic device shell.
6. Reliable weldability: 6061 aluminum alloy shows good welding performance, and it is easy to weld with other materials, such as TIG welding, MIG welding, etc.
6061 Common mechanical property parameters:
1. Tensile strength: The tensile strength of 6061 aluminum alloy can generally reach 280-310 MPa, and is even higher in T6 state, reaching the maximum value above.
2. Yield strength: The yield strength of 6061 aluminum alloy is generally about 240 MPa, which is higher in T6 state.
3. Exlongation: The elongation of 6061 aluminum alloy is usually between 8 and 12%, which means some ductility during stretching.
4. Hardness: 6061 aluminum alloy hardness is usually between 95-110 HB, high hardness, has a certain wear resistance.
5. Bending strength: The bending strength of 6061 aluminum alloy is generally about 230 MPa, showing good bending performance.
These mechanical performance parameters will vary with different heat treatment states and processing processes. In general, the strength and hardness can be improved after proper heat treatment (such as T6 treatment) of the 6061 aluminum alloy, thereby improving its mechanical properties. In practice, appropriate heat treatment states can be selected according to specific requirements to achieve the best mechanical performance.
Heat treatment process:
Rapid annealing: heating temperature 350~410℃, with the effective thickness of the material, the insulation time is between 30~120min, air or water cooling.
High temperature annealing: the heating temperature is 350~500℃, the finished product thickness is 6mm, the insulation time is 10~30min, <6mm, heat penetration, the air is cold.
Low-temperature annealing: the heating temperature is 150~250℃, and the insulation time is 2~3h, with air or water cooling.
6061 Typical use of aluminum alloy:
1. The application of plate and belt is widely used in decoration, packaging, construction, transportation, electronics, aviation, aerospace, weapons and other industries.
2. Aluminum for aerospace is used to make aircraft skin, fuselage frame, girders, rotors, propellers, fuel tanks, sipanels and landing gear pillars, as well as rocket forging ring, spaceship panel, etc.
3. Aluminum material for transportation is used in automobile, subway vehicles, railway buses, high-speed bus body structure materials, doors and Windows, vehicles, shelves, automobile engine parts, air conditioners, radiators, body plate, wheels and ship materials.
4. Aluminum all-aluminum can for packaging is mainly in the form of sheet and foil as metal packaging material, made of cans, caps, bottles, buckets, packaging foil. Widely used in beverages, food, cosmetics, drugs, cigarettes, industrial products and other packaging.
5. Aluminum for printing is mainly used to making PS plate, aluminum based PS plate is a new material of printing industry, used for automatic plate making and printing.
6. Aluminum aluminum alloy for building decoration, which is widely used for its good corrosion resistance, sufficient strength, excellent process performance and welding performance. Such as all kinds of building doors and Windows, curtain wall with aluminum profile, aluminum curtain wall plate, pressure plate, pattern plate, color coating aluminum plate, etc.
7. Aluminum for electronic home appliances is mainly used in a variety of busbars, wires, conductors, electrical components, refrigerators, air conditioners, cables and other fields.
Considering the above advantages, 6061 aluminum alloy is widely used in aerospace, shipbuilding, automobile industry, construction engineering and other fields. In practical application, the 6061 aluminum alloy with different heat treatment states can be selected according to the specific requirements to achieve the best performance.
