3A21 Aluminum Sheet

Alloy model: 3A21 Aluminum

Temper: O~H112

Thickness: 0.10mm-350mm

Delivery: Ready stock: 7-10 days, future goods: 15-30 days

MOQ: 1 ton

Packaging: Seaworthy wooden pallet, wooden case, aluminum plate case.

What is 3A21 Aluminum

3A21 aluminum sheet is an Al-Mn series alloy. It is the most widely used anti-rust aluminum. Its strength is not high and cannot be strengthened by heat treatment. Therefore, cold working methods are often used to improve its mechanical properties; it has high plasticity in the annealed state. Good plasticity during semi-cold work hardening, low plasticity during cold working.

Specifications of 3A21 Aluminum Sheet

Product 3A21 Aluminum Sheet
Temper F,O,H12,H14,H16



Thickness 0.10 mm-350 mm
Width 100 mm-2600 mm
Length Any length, according to the transportation, usually less than 12m.
Standards ASTM-B209, EN573-1, GB/T3880.1-2006, GB/T 24001-2016, GB/T 19001-2016
Surface treatment Mill finish, coated, anodized, mirror, embossed, checkered, etc.
Application Car body skin, roof, floor, etc.

3A21 Aluminum Sheet Chemical Composition

Element % Present
Mn 1.0-1.5
Si 0.6
Fe 0.7
Zn 0.1
Cu 0.05-0.20
Others 0.05
Al Reminder


Yongsheng 3A21 Aluminum Sheet Advantages

  • Anti-fatigue strength, high shear strength and high elongation.
  • Excellent corrosion resistance and suitable for humid environment.
  • Free from bumps, bright spots, scratches and other defects.
  • Strong corrosion resistance.



Product & Packaging Photos

Why Choose Us

Yongsheng Aluminum is a leading aluminum products manufacturer&supplier in China with 25 years of export experience. Our outstanding product quality, price, and always on-time delivery has won us many long term partners and gained a great reputation worldwide. We provide one-stop product solution for both CC&DC aluminum products.

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