3A21 O/T3/T4/T6 Aerospace Aluminum Sheet Plate
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3A21 O/T3/T4/T6 Aerospace Aluminum Sheet Plate

Chalco 3A21 aerospace aluminum plate conforms to ASTM B209M-14, ASTM B632/B632M-18, AMS 4028F, AMS 4029K, EN 485-2:2016, EN 485-4:2016, GB/T 3880.2-2018 standard. It is mainly used for aircraft, satellite, missile and other spacecraft structure manufacturing, as well as spacecraft parts manufacturing.

Chalco - high quality 3A21 aerospace aluminum sheet plate supplier

Aviation standard

ASTM B209M-14; ASTM B632/B632M-18; AMS 4028F; AMS 4029K; EN 485-2:2016; EN 485-4:2016; GB/T 3880.2-2018

International aviation quality system certification

ISO 9001; AS9100; EN 9100; DNV

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aerospace certification

Specification of Chalco 3A21 aerospace aluminum sheet plate

Temper O, T3, T4, T6, H111, H112, H113
Thickness 0.5mm-6mm: usually used to manufacture the shell, interior and structural parts of aerospace vehicles
6mm or above: mainly used for manufacturing large structural parts and engine parts
Width 20mm-2600mm
Length 500-16000mm There is no fixed standard for the length. It can be cut into aluminum plates of different lengths according to customer requirements.
Packing Export standard wooden pallet.
Inventory The inventory is complete. Please check our inventory table or contact us for detailed requirements.
Performance parameter table Click here to check the specific【Performance parameter table】

Points for purchasing Chalco 3A21 aerospace aluminum sheet plate

Production capacity of 3A21 aerospace aluminum plate

  • As a professional 3A21 aerospace aluminum sheet plate supplier, Chalco has always put product quality and production capacity in the first place.
  • Chalco 3A21 aerospace aluminum sheet plate is produced in strict accordance with international standards.
  • Chalco adopts advanced production equipment and technology, and strictly controls every link from raw material procurement to production processing, quality testing, etc. to ensure stable and reliable product quality.

Delivery capacity of Chalco 3A21 aerospace aluminum sheet plate

  • Chalco's large production workshop and professional production team is well-regarded by customers.
  • Chalco has abundant inventory and mass production capabilities to meet customer demands.
  • Chalco offers fast delivery services to ensure minimal disruption to customer production plans.
  • Plate thickness, size, and surface treatment options are customizable to meet specific requirements.

Characteristics of Chalco 3A21 aerospace aluminum sheet plate

  • High surface flatness: the surface of Chalco 3A21 aluminum sheet plate for aerospace should be flat and smooth, without obvious defects such as dents, ripples, wrinkles, etc.
  • Surface oxide film process: Chalco 3A21 aluminum sheet plate used for aerospace shall form uniform, dense and solid oxide film on the surface. The thickness of oxide film shall comply with relevant standards.
  • Surface cleanliness: the 3A21 aluminum sheet plate used in aerospace is clean and free of oil, dust, foreign matters and other impurities.
  • No surface defects: Chinalco 3A21 aerospace aluminum sheet plate is free of cracks, bubbles, inclusions, water marks, scratches and other obvious defects.

Performance advantages of Chalco 3A21 aerospace aluminum sheet plate

  • Chalco's 3A21 aerospace aluminum sheet plate offers lightweight strength, enhancing aerospace vehicle efficiency and load capacity.
  • It provides good machinability, weldability, and corrosion resistance, ensuring stable performance in adverse environments.
  • Easy processing, including cutting and bending, and high-temperature resistance make it suitable for aerospace parts manufacturing.
characteristics of 3A21 aluminum plate

Chemical components of Chalco 3A21 aerospace aluminum sheet plate

Component Content
Si 0.6
Fe 0.7
Cu 0.05-0.5
Mn 1.0-1.6
Mg 0.05
Cr 0.10
Ni -
Zn 0.10
Ti -
Zr -
Al Reminder

Mechanical and physical properties of Chalco 3A21 aerospace aluminum sheet plate

Mechanical and physical properties
Density 2.73g/cm3
Melting point About 600°C
Thermal expansion 23.2×10-6/K
Thermal conductivity 138 W/m·K
Electrical resistivity 0.032Ω·mm2/m
Tensile strength 185-230 MPa
Yield strength 120-180 MPa
Elongation 10%-20%
Hardness 45-70 HRB
Fracture toughness 13-17 MPa·m¹/₂

Chalco hot selling 3A21 aerospace aluminum plate products and applications

Chalco's hot-selling 3A21 aerospace aluminum plates are mainly in O, T3, T4, T6, H111, H112, H116 and other alloy tempers.

3A21-O aerospace aluminum sheet plate

  • The O temper refers to the aluminum alloy material without overheating treatment. It is easy to process and form, and has good plasticity.
  • Good surface quality and corrosion resistance: it is often used to manufacture the shell and cover of aircraft, rocket and other aerospace equipment to protect the internal equipment and system from the impact of the external environment.
  • High plasticity, easy to form and process: commonly used for manufacturing internal components, such as partitions, supporting structures, etc.
  • Good corrosion resistance and sealing performance: used to manufacture containers such as fuel tanks and hydraulic oil tanks.
  • The surface of the plate is high in flatness and consistent in color: it is often used to manufacture aircraft seats and interior panels to increase passenger comfort and beauty.
  • Good thermal conductivity: used for manufacturing electronic equipment shell, radiator and other components to ensure the normal operation of the equipment.

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3A21-T3 aerospace aluminum sheet plate

T3 temper refers to 3A21 aluminum alloy after aging treatment. The aluminum alloy in this temper has high strength and hardness, but still maintains certain plasticity and formability.

  • High strength and rigidity: it is often used to manufacture aircraft wings, wingtips, tail fins and other components to ensure the stability and safety of aircraft during flight.
  • Excellent strength and hardness: it is often used to manufacture the body shell and chassis of aircraft, rocket and other aerospace equipment to enhance the structural strength of the entire equipment.
  • High strength and toughness: commonly used to manufacture key components of flight control system, such as joystick, cockpit door, etc., to ensure the accuracy and reliability of equipment.
  • High heat resistance and corrosion resistance: it is often used to manufacture engine hood, thrust vector nozzle and other components to ensure normal engine operation and effective conversion of jet thrust.
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3A21-T4 aerospace aluminum sheet plate

T4 temper refers to 3A21 aluminum alloy temper obtained by natural aging or artificial aging. The aluminum alloy in this temper has high strength and hardness, but poor plasticity and formability.

  • High strength and hardness: it can be used as the material of shell plate, bracket, bracket, keel and other structural components.
  • Good heat resistance: mainly used for manufacturing blades and other high-temperature parts.
  • Good strength and rigidity: used to manufacture aircraft airfoils and control panels, etc., which can withstand large pressure and tension.
  • Good corrosion resistance and mechanical properties: used for manufacturing various aerospace equipment, such as radar antenna, electronic equipment shell, etc.

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3A21-T6 aerospace aluminum sheet plate

T6 temper refers to the temper of 3A21 aluminum alloy obtained by twice heat treatment and aging treatment. The aluminum alloy in this temper has the highest strength and hardness, but its plasticity and formability are poor.

  • Excellent strength, toughness and corrosion resistance, and light weight: used for the fuselage, wing, tail and other structural parts of the aircraft, which can effectively reduce the total weight of the aircraft and improve the fuel efficiency of the aircraft.
  • High strength, rigidity and fatigue resistance, as well as good thermal expansion and corrosion resistance: used for structural parts of spacecraft, such as shells, missile launchers, etc. Suitable for use in harsh space environment.
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3A21-H111 aerospace aluminum sheet plate

3A21-H111 is thetemper obtained by annealing after cold working, with good machinability and corrosion resistance. It is often used to manufacture aircraft structural components such as shells, partitions, assembly plates, etc.

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3A21-H112 aerospace aluminum sheet plate

3A21-H112 is the temper obtained by annealing after deformation processing, with high strength and hardness, while still maintaining good machinability and corrosion resistance. It is often used in places where the strength requirements of aircraft structural components are high, such as leading edge, web, frame, etc.

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3A21-H116 aerospace aluminum sheet plate

3A21-H116 is the temper obtained after water quenching and cooling and then tensile processing, with high strength and hardness, while maintaining good machinability and corrosion resistance. It is often used for aircraft structural components requiring high strength and toughness, such as wings, landing gear, etc.

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application of 3A21-O aluminum plate

Chalco other hot selling aerospace aluminum plate products

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