Tuesday, March 1, 2022

Metal aluminum alloys

 

What are metal aluminum alloys?

Aluminum is one of the light metal materials with a certain amount of other alloying elements added. In addition to the general characteristics of aluminum, aluminum alloys have some specific characteristics of alloys due to the different types and amounts of alloying elements added. The density of aluminum alloy is 2.63～2.85g/cm, with high strength (σb is 110～650MPa), the specific strength is close to high alloy steel, the specific stiffness exceeds steel, with good casting performance and plastic processing performance, good electrical and thermal conductivity, good corrosion resistance and weldability, can be used as structural materials, in aerospace, aviation, transportation, construction, mechanical and electrical, light chemical and It have a wide range of applications in aerospace, aviation, transportation, construction, electromechanical, light chemical and daily necessities.

  What are some common alloys of aluminum?

Metal aluminum alloy is a general term for alloys based on aluminum. There are different models, and the metal components added to various aluminum alloys are also different. The main alloying elements are Cu(copper), Si(silicon), Mg(magnesium), Zn(zinc), Mn( manganese), and the secondary alloying elements are Ni(nickel),Fe( iron), Ti(titanium), Cr(chromium), Li(lithium), etc.According to the alloy series, it can be divided into:

Metal aluminum alloy series

Metal aluminum alloy raw materials are divided into

 aluminum sheet plate







Aluminum Coil









 

Aluminum foil










Aluminum strip










Aluminum circle disc











Surface treatment of metal aluminum alloys

According to the surface treatment, aluminum alloy sheets can be divided into two categories: non-painted products and painted products.

1) Non-painted products

  1. They can be divided into hammered aluminum sheets (without regular pattern), embossed sheets (with regular pattern), and pre-passivated aluminum oxide surface treatment sheets.
  2. These products are not painted on the surface of the plate, so the appearance of the surface is not high and the price is low.

2) Painted products

(1) Classification.

According to the painting process can be divided into: painted board products and pre-roller coated boards.

According to the type of coating paint can be divided into: polyester, polyurethane, polyamide, modified silicon, epoxy resin, fluorocarbon, etc.

(2) A variety of coatings, the main performance difference is the resistance to ultraviolet rays of the sun, which in the front side of the most commonly used coating is fluorocarbon paint (PVDF), its ability to resist ultraviolet light is stronger; back side can choose polyester or epoxy resin coating as a protective paint. In addition, a layer of peel-off protective film can be applied to the front side.

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