Differences between PPGI and PPGL

The difference between PPGI and PPGL are two different color coated steel plates, which are widely used in various industries, such as advertising, construction, transportation, household appliances, etc. They are very similar. However, there are still some differences. So, what is the difference between PPGI and PPGL tables? Read on to learn more. Differences between PPGI and PPGL plates

1.Different substrates PPGI is the abbreviation of pre-coated galvanized steel, while PPGL is the abbreviation of pre-coated galvanium steel. As the name implies, PPGI uses galvanized sheet (with a layer of zinc coating) as the base metal. PPGL uses aluminum-zinc plate as the base material, with 55% aluminum, 43.3% zinc and 1.6% silicon. This is the main difference between PPGI and PPGL, which will further affect their characteristics and applications. Galvalume Steel Coil

2. The service life is as described above. Zinc coating and aluminum-zinc coating are used to protect the metal from rusting to extend its service life. For GI plates, when the zinc layer is completely corroded, the base metal will be damaged. Generally speaking, galvanized sheet can be used for 10 to 15 years. However, aluminum and zinc alloys form microscopic particle areas. The zinc-rich phase will corrode preferentially, while the aluminum-rich phase will corrode slowly. Therefore, Al-Zn coating is more corrosion resistant than galvanized Steel Plate. According to data, the service life of PPGL is three times that of PPGI. Here are some pictures for you.

3. Weight difference Under the same coating thickness, Al-Zn coating is lighter than zinc coating. This is because the specific gravity of aluminum is lower than that of zinc. That is to say, under the same weight, Al-Zn coating can cover 3% more space than GI plate. Item thickness (mm) Weight (g/m 2) GI 0.6 200 GL 0.6 350

4.Appearance difference The surface of PPGL sheet is smoother than that of PPGI sheet. This is because aluminum has better adhesion than zinc. For the same reason, PPGL plates can be painted directly without pretreatment. However, for galvanized sheet, pretreatment is required.

5. The heat resistance of PPGL sheet with different characteristics is better than that of PPGI sheet. PPGL sheet can withstand the temperature of 315 ℃. In addition, PPGL plate has better corrosion resistance than PPGI. This is because the dense layer made of aluminum can prevent the base metal from further corrosion. GI and GL

6. PPGI and PPGL plates are widely used for wallboard and roof in different applications. In contrast, PPGL has better corrosion resistance, which means it is more suitable for harsh outdoor environment. In addition, due to its good heat resistance and good surface conductivity, it is widely used in chimney tubes, ovens and lampshades. However, PPGL has less cutting edge protection. Therefore, you can use anti-rust paint or zinc-rich paint on the cutting edge. Cutting edge protection geography, PP PPGL cutting edge is less protected. Therefore, you can use anti-rust paint or zinc-rich paint on the cutting edge. Cutting edge protection geography, PP PPGL cutting edge is less protected. Therefore, you can use anti-rust paint or zinc-rich paint on the cutting edge.

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