3A21 Aluminium Sheet

  • 3A21 aluminium sheet is a typical 3 series Al-Mn anti-rust alloy, the A here represents an improvement on the original pure aluminium, however, 3A21 aluminium sheet is also a non-heat treated alloy, and can only be enhanced by cold machining. Besides, due to the addition of the main alloy Mn, 3A21 aluminium alloy has the characteristics of excellent corrosion resistance, good formability and weldability, and appropriate strength, etc., so it is widely used in both these properties and the conditions requiring higher strength than the 1-series alloy, or the low-load parts working in liquid and gas medium, etc.
  • With decades of aluminium sheet production experience, CHAL is able to produce and supply high-quality 3A21 aluminium sheet of different sizes and tempers.

The Order Process of 3A21 Aluminium Sheet  

order process of aluminium products

Specifications of 3A21 Aluminium Sheet  

Aluminium alloy3A21
Material temperF, O, H12, H14, H16, H18, H19, H22, H24, H26, H28, H112, H114
Thickness (mm)0.2-400
Width (mm)20-2650
Length (mm)Customized
Typical ProductsLow load part, Brazed plate-type heat exchanger, Oil tank, Pressure vessel, Brazing plate,etc.

Chemical Composition of 3A21 Aluminum Sheet  

ElementsMnSiFe ZnCuOthersAl
Content1.0- 0.10.05-0.20.05Remain
3A21 Aluminium Sheet

Physical Properties of 3105 Aluminium Alloy  

Property3105 Data
Density, lb/in30.0983
Modulus of Elasticity, psi10.0 x 106
Coefficient of Thermal Expansion, 68-212˚F, /˚F12.1 x 10-6
Thermal Conductivity, Btu/ft hr ˚F99
Specific Heat, Btu/lb ˚F0.214
Electrical Resistivity, Microohm-in1.504

The Features of 3A21 Aluminium Sheet  

1. Excellent Corrosion Resistance. The 3A21 aluminium sheet is close to the corrosion resistance of industrial pure aluminium, has good corrosion resistance to the atmosphere, freshwater, seawater and some acids, etc.

2. Better Plasticity. The plasticity of 3A21 aluminium alloy is very high in the annealing state, good in the case of semi-cold hardening, and low in the case of cold hardening.

3. Good Weldability. 3A21 aluminium sheet has good spot welding, gas welding, argon arc welding and other welding effects.

4. Mechanical Properties. 3A21 aluminium sheet tensile strength σb (MPa) is 120-160, conditional yield strength σ0.2 (MPa)≥8, elongation δ10≤2%.

3A21 Aluminium Sheet

Applications of 3A21 Aluminium Sheet  

1. Low load parts for working in a liquid or gaseous medium. Such as oil tanks, gasoline, lubricating oil pipes, various liquid containers, and other small load parts made by deep drawing.

2. For use under conditions of higher strength than 1 series alloy. Such as kitchen utensils, food/chemical products processing and storage equipment, transport tank of liquid products, thin plate for all kinds of pressure vessels and pipe, brazed plate-type heat exchanger, insulation equipment, cosmetic board, photocopying machine drum, marine tread plate. As for wire is used for rivets.

Packing Detail of 3A21 Aluminium Sheet  

The standard export packaging, plastic film or craft paper covered at customers’ requirements. Wooden case or wooden pallet is adopted to protect products from damage during the delivery.

Packing Detail of 3A21 Aluminium Sheet

3A21 Aluminium Sheet Manufacturer and Supplier in China 

CHAL Aluminium provides you with first-rate quality, attractive and reasonable prices. Excellent surface quality and package, fast delivery. If you are looking for a 3A21 aluminium sheet supplier in China, CHAL is your best choice, we promise you the best price and excellent service.

As a professional manufacturer and supplier of aluminium sheet, CHAL can provide you with 3A21 aluminium alloy metal sheets, which are used in diverse industrial applications. We have reliable quality, reasonable prices and prompt delivery. Common specifications are in stock. Special sizes can be customized according to clients’ requests. Please contact us if you have any questions. We will be glad to serve you.