3A21 Aluminum plate

3A21 Aluminum plate

Thickness: 0.15-600mm
Standard: GB, JIS, DIN, ASTM
Width: ≦2600mm
Temper: O/H111 H112 H116/H321 H12/H22/H32 H14/H24/H34/H16/H26/H36 H18/H28/H38 H114/H194, etc.F, T1 T2 T4 T5 T6 T51 T54 T651 T652 T6510 T62 T6511 ETC
Length: ≦16000mm or Coil (C)
Type: sheet/ plate/coil/roll
Aluminum Grade: 1000 Series: Industrial Pure Aluminum(1050,1050A,1060,1070,1100,); 2000 Series: Aluminum-copper alloys(2024(2A12), LY12, LY11, 2A11, 2A14(LD10), 2017, 2A17); 3000 Series: Aluminum-manganese alloys(3A21, 3003, 3103, 3004, 3005, 3105); 4000 Series: Al-Si alloys(4A03, 4A11, 4A13, 4A17, 4004, 4032, 4043, 4043A, 4047, 4047A); 5000 Series: Al-Mg alloys(5052, 5083,5454, 5754, 5005, 5086,5182, 5A05 5A06); 6000 Series: Aluminum Magnesium Silicon Alloys(6063, 6061, 6060, 6351, 6070, 6181, 6082, 6A02); 7000 Series: Aluminum, Zinc, Magnesium and Copper Alloys(7075, 7A04, 7A09, 7A52, 7A05)

// Product  Description //

Thickness0.15-600mmStandardGB, JIS, DIN, ASTM
Width≦2600mmTemperO/H111 H112 H116/H321 H12/H22/H32 H14/H24/H34/H16/H26/H36 H18/H28/H38 H114/H194, etc.F, T1 T2 T4 T5 T6 T51 T54 T651 T652 T6510 T62 T6511 ETC
Length≦16000mm or Coil (C)Typesheet/ plate/coil/roll
Aluminum Grade1000 SeriesIndustrial Pure Aluminum(1050,1050A,1060,1070,1100,)
2000 SeriesAluminum-copper alloys(2024(2A12), LY12, LY11, 2A11, 2A14(LD10), 2017, 2A17)
3000 SeriesAluminum-manganese alloys(3A21, 3003, 3103, 3004, 3005, 3105)
4000 SeriesAl-Si alloys(4A03, 4A11, 4A13, 4A17, 4004, 4032, 4043, 4043A, 4047, 4047A)
5000 SeriesAl-Mg alloys(5052, 5083,5454, 5754, 5005, 5086,5182, 5A05 5A06)
6000 SeriesAluminum Magnesium Silicon Alloys(6063, 6061, 6060, 6351, 6070, 6181, 6082, 6A02)
7000 SeriesAluminum, Zinc, Magnesium and Copper Alloys(7075, 7A04, 7A09, 7A52, 7A05)
Advantage1light weight, good strength, excellent ductility, easy to process and produce;
2Weldable, excellent fatigue resistance, good corrosion resistance;
3green, low carbon, environmental protection, high recyclable value;
4Easy to process: low density, light weight, excellent elongation, strong plasticity, which can meet the different production and processing needs of users;
5Economical and environmental protection: aluminum alloy has low cost and high recycling value, and is a new low-carbon, green and environmentally friendly material;
6Durable: excellent corrosion resistance, excellent weather resistance, effective resistance to ultraviolet rays, making it better to extend the service life.
Application1. Lighting 2. Solar reflector 3. Building exterior 4. Interior decoration: ceiling, wall, etc. 5. Furniture, cabinets 6, elevators 7, signs, nameplates, bags Photo frames 10. Household appliances: refrigerators, microwave ovens, audio equipment, etc. 11. Aerospace and military. 12. Mechanical parts processing 13. Mould manufacturing 14. Chemical/insulation pipeline coating. 15. High-quality ship board.


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Wuxi Hongke Special Steel Co., Ltd. is a one-stop specialty steel supplier integrating R&D, production, deep processing, and international trade, delivering fully certified, standard-compliant solutions for global infrastructure and industrial projects.

Production Capacity

Full-process in-house production including hot rolling, cold rolling, galvanizing, pipe making, and section steel forming, supported by comprehensive physical & chemical testing instruments.

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Wide product range covering coils, sheets, bars, pipes, sections, and profiles, with customization available according to GB, ASTM, EN, JIS, AS, and GOST standards.

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Certified with ISO9001, ISO14001, CE, API 5L/5CT, ASTM and EN, ensuring stable and internationally compliant product quality.

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Products are widely used in construction, machinery manufacturing, steel structures, energy transmission, auto parts, hardware, shipbuilding, and infrastructure projects.

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