ZEXEED

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Quality characteristics

Flat surface

■Type, symbol, and applicable indicated thickness

ZEXEED has a slow plating layer corrosion rate, and there is a lasting barrier effect of the protective membrane formed on the plating layer, so it is about ten times more corrosion resistant than hot-dip galvanized steel(GI), and about two times more corrosion resistant than conventional highly corrosion-resistant galvanized steel.

Testing
conditions		JASO M609-91
(8 hours/cycle)
  1. Salt spray：2 hours, 35°C, 5% NaCl
  2. Drying：4 hrs at 60°C, relative humidity 20-30%
  3. Wetting：2 hrs at 50°C, relative humidity 95%+.
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Cut end face

■Accelerated corrosion test (JASO)

ZEXEED is superior to other galvanized steel in terms of corrosion resistance at the cut end face.
*The red rust area ratio may vary depending on the degree of plating loss at the end face.

Testing
conditions		JASO M609-91
(8 hours/cycle)
  1. Salt spray：2 hours, 35°C, 5% NaCl
  2. Drying：4 hrs at 60°C, relative humidity 20-30%
  3. Wetting：2 hrs at 50°C, relative humidity 95%+.
Test period : Up to 180 cycles
Test specimen size : 100 x 50 x 2.3 mm
(Aside from the post-plating, the top, bottom, and right sides are also coated with paint)
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Processed part

■Example of end-face corrosion resistance in processing

ZEXEED shows high corrosion resistance to processing such as punching metal.
The edge of cutting by punching is protected by a protective film formed by elution of the plating layer.
*In outdoor exposure, red rust may occur depending on the thickness and opening ratio, but it will be covered by the protective film over time.

Test methodPunching and press molding
(Hole diameter: φ20mm, Opening ratio: 30%)
Testing conditionsJASO M609-91
(8 hours/cycle)
  1. Salt spray：2 hours at 35°C, 5% NaCl
  2. Drying：4 hrs at 60°C, relative humidity 20 to 30
  3. Wetting：2 hrs at 50°C, relative humidity 95%+.
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Droplet environment

ZEXEED shows superior corrosion resistance in droplet environment, even with less than half weight of plate coating of zinc hot dip galvanizing (JIS H 8641).

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Droplet corrosion acceleration test
(acid rain – dripped at 100μL/second)
Components of the
test liquid
Cl -： 10ppm
NO3-： 20ppm
SO42-： 40ppm
PH
5±0.2