Basic introduction of galvanized steel sheet classification

April 1, 2018
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Galvanized steel sheets are classified into ordinary electrolytic plates and fingerprint resistant electrolytic plates. The anti-fingerprint board is based on the addition of a special anti-fingerprint treatment to the ordinary electrolytic board. It is resistant to sweat and is generally used on parts that do not have any treatment. The grade is SECC-N. Ordinary electrolytic plates are divided into phosphating plates and passivated plates. Phosphating is commonly used, and the grade is SECC-P, commonly known as p-material. Passivated sheets are available in oiled and unoiled parts.


  Hot dip galvanized steel sheet (SGCC) has an advantage over electrogalvanized steel sheet (SECC). SECC bending and section are very easy to rust, SGCC is much better! High quality chassis usually adopts SECC or SGCC galvanized steel sheet, and the chassis steel plate with this material is used. The color is bright and has a metallic luster. The advantage of this steel plate is its good corrosion resistance.

  Electro-galvanized steel sheet (SECC): uniform gray, mainly imported, fingerprint resistant, has excellent corrosion resistance, and maintains the processability of cold rolled sheet. Uses: Home appliances, computer casings and some door panels and panels, Shanghai Baosteel can produce, but the quality of zinc layer is much worse than foreign countries.

  Hot dip galvanized steel sheet (SGCC): immersion plating, bright white, small zinc flower, it is difficult to see the zinc flower, large zinc flower is very obvious to see the hexagonal flower block, there is no steel mill in China Producing high-quality materials, mainly imported from abroad, Taiwan has chinasteel, shengyu steel corporation can produce. Main characteristics: corrosion resistance; lacquering; formability; spot weldability. Uses: Extremely wide, small household electrical appliances, good appearance, but compared with SECC, its price is more expensive, many manufacturers have switched to SECC to save costs.

  According to zinc, the size of zinc flower and the thickness of zinc layer can indicate the quality of galvanizing. The smaller the thickness, the better. Of course, don't forget to let manufacturers add fingerprint resistance. It is also possible to distinguish by its plating: such as Z12 means the total amount of double-sided plating is 120g/mm. E.g:

  Aluminized zinc plated steel (SGLD): is a multiphase alloy material containing aluminum-rich and zinc-rich. Because of the characteristics of aluminum and zinc, it has better performance than hot dip galvanized steel sheet (SGCC). Main characteristics: corrosion resistance, its ability is much higher than SGCC; heat resistance; heat conduction and heat reflection; formability; weldability. Uses: used in some places where reflexivity is required, such as reflector inside the oven. The reflector of the electric cooker. Taiwan's shengyu steel corporation can produce. There are no steel mills in China that can be produced. The price is much more expensive than the SGCC. Hot dip galvanized steel sheet (SGCC) is generally used, galvanized steel sheet (SGLD) is deep drawing, and SGCE is ultra deep drawing.