What is 3A21 aluminum plate

The weldable LF21 aluminum alloy, which includes the Al-Mn series aluminum alloy 3A21, is renowned for its superior anti-rust qualities.
Cold working is typically employed to increase mechanical qualities since the material is not particularly strong-it is just marginally stronger than industrial pure aluminum-and cannot be improved by heat treatment.
When annealed, 3A21 aluminum plate exhibits great plasticity, making it appropriate for use in industries including aerospace, equipment manufacture, automotive, and transportation that demand both high plasticity and good weldability.
Since 3A21 and 3003 have almost identical chemical compositions, they may be utilized interchangeably in the majority of applications.

3A21 Aluminum Alloy Chemical Composition

Characteristics of 3A21 aluminum plate

1) A common rust-proof aluminum alloy with superior corrosion resistance is 3A21;
2) It outperforms 3003 aluminum in terms of elongation, tensile strength, and weldability;
3) The surface resists pressure well and is smooth;

What are the main application areas of 3A21 aluminum sheet?

pipelines for lubricating oil, gasoline, or fuel tanks.
cookers and containers for liquids.
Container foils, electrical foils, and light-load components.
brazed plate heat exchangers and heat exchangers.
Brazed plates.
drums for washing machines.
Aluminum roofing, pattern panels, sound insulation panels, car body covers.
signs for traffic.

What is the welding performance of 3A21 aluminum plate?

Argon arc welding (TIG), MIG welding, and other welding techniques may be used to join 3A21 aluminum plate, which has high welding performance.
The following features primarily represent its welding characteristics:
Good weldability: The 3A21 aluminum alloy's organizational structure and chemical makeup make it highly weldable and appropriate for a variety of welding techniques.
Strength after welding: The aluminum alloy's strength little changes after welding, making it appropriate for use cases where mechanical qualities are needed.
Welding heat affected zone: The welding heat affected zone's performance is properly maintained during the welding process, which lessens the issues brought on by heat effects.

Pre-welding treatment: Cleaning the aluminum plate's surface to get rid of oxides and oil before welding is advised to improve the quality of the weld.
All things considered, 3A21 aluminum plate is a good welding alloy that can be used in a variety of industrial settings. It is ideal for the engineering and manufacturing sectors.
Related: Welding aluminum alloy

How to judge the quality of 3A21 aluminum plate?

The quality of 3A21 aluminum plate may be assessed in a number of ways:
Examining appearance:
Make sure the metal plate's surface is smooth and level, and look for any visible dents, scratches, bubbles, or other flaws.
Measuring dimensions:
To make sure the aluminum plate satisfies the required standards, measure its thickness, length, and breadth using instruments like calipers and computerized scales.
Detection of chemical composition:
To make sure aluminum satisfies the composition standards of 3A21 alloy, determine its chemical makeup using spectral analysis or chemical sampling.

Testing of mechanical properties:
To confirm that its mechanical qualities, such as tensile strength, yield strength, and elongation, meet the requirements, perform tensile, hardness, and other tests.
Test of welding performance:
In order to make sure that the aluminum plate has outstanding welding performance, a welding test may be conducted to examine the weld's strength and look.
Qualifications of the supplier:
Select a trustworthy provider and look up its ISO 9001 and other pertinent certifications as well as its quality management system certification.
The quality of 3A21 aluminum plate may be more thoroughly assessed using the aforementioned techniques.

aluminum alloy plate packaging and delivery

1. To guarantee that the metal plate's surface is undamaged and free of scratches, paper or film it;
2. The aluminum plate is kept clean and clear of dirt throughout transit by using plastic or kraft paper wrapping to keep out moisture and rain (each box contains a moisture-proof desiccant to maintain the quality of our products in the wet East and South China);
3. To prevent accidents during transit and guarantee that the aluminum plate's geometric shape doesn't alter, add wooden pallets and support them with steel belts;
4. Wooden boxes and brackets with fumigation markings are used to package all export goods;
5. Pack in accordance with additional client packaging specifications.
6. Transporting containers:

20ft GP:5898mm (Length)x2352mm (Width)x2393mm (Height), loading 18~25 tons.

40ft GP:12032mm (Length)x2352mm (Width)x2393mm (Height), loading 20~28 tons.