Difference Between PPGI and PPGL Sheets

PPGI and PPGL sheets are two different types of shade-coated steel, which are widely made use of in various markets, for example, marketing, building, transport, home appliance industry, etc. They are extremely similar. But there are still some distinctions. So, what are the differences between PPGI and PPGL sheets? Keep reading for more information.

Different Substrates
PPGI is short for pre-painted galvanized steel, while PPGL is brief for pre-painted galvalume steel. As the name recommends, PPGI utilizes galvanized sheet (with a layer of zinc layer) as base steel. While PPGL is with galvalume sheet as substratum, which is coated with 55% aluminum, 43.3% zinc, and also 1.6% silicon. This is the main distinction between PPGI and PPGL, which will certainly further affect their features and applications as well.

Difference Between PPGI and PPGL Sheets

Different Service Life
As mentioned, both zinc coating and Al-Zn coating are utilized to shield the metal from rusting to extend its service life. For the GI sheet, the base steel will be damaged when the zinc finish is all corroded. Typically, a galvanized sheet might last for 10 to 15 years. While lightweight aluminum and zinc alloy types microscopic bit areas. The Zn-rich phase will corrode preferentially, while the Al-rich phase will wear away really gradually. So Al-Zn coating is extra corrosion-resistant than zinc-coated steel sheet. According to information, the life span of PPGL is 3 times longer than that of PPGI. Below are some pictures for you.

Weight Difference
With the same coating density, Al-Zn finishing is lighter than zinc finishing. It is because the specific weight of lightweight aluminum is less than that of zinc. That is to claim, with the very same weight, the Al-Zn finish can cover 3% more space than the GI sheet.

Look Difference
The surface area of the PPGL sheet is smoother than that of the PPGI sheet. It is due to the better adhesion of lightweight aluminum than zinc. For the very same reason, PPGL sheets can be repainted straight without pre-treatment. However, it is essential to be pre-treated for galvanized sheets.

Galvalume Steel Coils

Different Features
The heat resistance of the PPGL sheet is far better than that of the PPGI sheet. PPGL sheet can stand up to temperature levels of 315 ℃. Also, PPGL sheets have far better corrosion resistance than PPGI. It is since the thick layer constructed from aluminum can prevent the base metal from additional eroding.

Different Applications
Both PPGI and PPGL sheets are widely made use of in paneling and also roofing. Comparative, PPGL has much better resistance to deterioration, which indicates it is more suitable for serious outside environments. Additionally, due to its great warm resistance and excellent surface area conductivity, it is extensively made use of in smokeshaft pipes, stoves as well as lampshades, etc. Nonetheless, the cut edges of PPGL are much less safeguarded. So you can make use of anti-rust paint or zinc-rich paint to the cut sides.

Geographically, PPGI is suitable for high heat and cold areas, such as Vietnam, UAE, Saudi Arabia, Libya, Russia, Canada, Finland, etc. While PPGL is suitable for wet locations, such as Singapore, the Philippines, Kenya, Nigeria, Malaysia, Brazil, etc.

GI VS GL

Rate Difference
Due to the far better performance and less certified produces, the cost of the PPGL sheet is 3% -11% greater than that of the PPGI sheet.

Which One Is Right for Me?

Except for the distinctions, PPGI & PPGL sheets are also very similar. Both of them have beneficial functions, such as outstanding corrosion resistance, formability, and alleviation to paint. Both are extensively made use of in building and construction, shipbuilding, vehicle production, furnishings, electric market, and more.

So which one is more suitable for you? The most effective means is to speak with someone professional, such as Wanzhi Steel, which will provide you the best referral according to your location, weather, planned use, budget plan, etc. No matter what you will make use of, PPGI or PPGL sheets, you will enjoy their sturdiness, safety, and great appearance. Wanzhi Steel will certainly be constantly here for you. Please feel free to call us!