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A.galvanized sheet and stainless steel sheet
The galvanized sheet is to avoid corrosion of the surface of the thick steel plate and increase its service life.
The surface of the thick steel plate is coated with a layer of metallic zinc.
This kind of galvanized cold rolled steel sheet is call galvanized sheet.
Hot-rolled galvanized strip products are mainly use in manufacturing industries, such as engineering construction, light industry, trolleys, agriculture, animal husbandry and fishery, and commercial services.
Among them, the construction industry is suitable for the production of corrosion-resistant industrial products and the colored steel roofs and roof grills of industrial buildings;
the metallurgical industry uses it to produce household appliances, civil chimneys, kitchen supplies, etc.,
and the automobile manufacturing industry is suitable for the production of automobiles.
Anti-corrosion components.
Agriculture, animal husbandry and fishery mainly use for food storage and transportation,
meat food and seafood refrigeration production and processing supplies, etc.;
business services mainly used for material supply, storage and packaging supplies.
Stainless steel galvanized sheet refers to steel that is resistant to weakly corrosive substances such as gas, steam,
water and organic chemical corrosive substances such as acids, alkalis and salts.
Also known as stainless steel and acid-resistant steel.
In certain applications, steel resistant to weakly corrosive substances usually called stainless steel,
while steel resistant to solvent substances is called acid-resistant steel.
According to its mechanism, stainless steel plates usually divide into austenitic steel, ferritic steel,
ferritic steel, ferritic metallographic structure (duplex) stainless steel plate and settlement hard stainless steel plate.
In addition, it can divid into chromium stainless steel plate, chromium-nickel stainless steel plate and chromium manganese nitrogen stainless steel plate.
B.The reason
The corrosion resistance of galvanized stainless steel sheet decreases with the increase of carbon content.
Therefore, the carbon content of most stainless steel plates is low, not exceeding 1.2%,
and the Wc (carbon content) of some steels is even less than 0.03% (for example, 00Cr12).
The key aluminum alloy element in the stainless steel plate is Cr (chromium).
Only when the water content of Cr exceeds a certain value, the steel has corrosion resistance.
Therefore, the general Cr (chromium) water content of stainless steel plates is at least 10.5%.
The stainless steel plate also contains elements such as Ni, Ti, Mn, N, Nb, Mo and Si.
Galvanized stainless steel sheet is not easy to cause corrosion, crevice corrosion, rust, or damage.
Among the metal composite materials for engineering use, stainless steel plates are also one of the raw materials with the highest compressive strength.
As the stainless steel plate has excellent corrosion resistance,
it can make the structural members permanently maintain the consistency of the architectural engineering design.
The chromium-containing stainless steel plate also has impact toughness and high ductility,
which is convenient for the production, processing and manufacturing of parts, and the needs of architects and overall designers can be considered.