Comparison in characteristics with
post galvanized (Electrogalvanized)
and post-painted (Cationic electrodeposition coating)
products

Results of combined-cycle corrosion tests of flat parts and cut edges

ZAM® shows better corrosion resistance than post hot-dip galvanized and post-painted products.

Appearances of flat parts and cut edges after combined-cycle corrosion test

Thickness: 2.3 mm

Before testZAM® — Before test

60 cycles ZAM® — 60 cycles

120 cycles ZAM® — 120 cycles

ZAM®：90/90 g/m2 ZC treatment

Before test Post galvanized (Electrogalvanized)100 / 100g / m2 Chromate 100 mg/m2 — Before test

60 cycles Post galvanized (Electrogalvanized)100 / 100g / m2 Chromate 100 mg/m2 — 60 cycles

120 cycles Post galvanized (Electrogalvanized)100 / 100g / m2 Chromate 100 mg/m2 — 120 cycles

Post galvanized (Electrogalvanized)100 / 100g / m2 Chromate 100 mg/m2

Before test ZAM® — Before test

60 cycles ZAM® — 60 cycles

120 cycles ZAM® — 120 cycles

Post-painted (Cationic electrode position coating)Film thickness:15μm

Test conditions
JASO M609-91

Test conditions

*Post galvanized and post-painting were also provided on the cut edges.

Reference scale: 20mm

Results of combined-cycle corrosion tests of drawn section

Drawn sections of ZAM® exhibit better corrosion resistance than those of post galvanized steel (galvanized after processing).

Appearances of drawn section after combined-cycle corrosion test

Drawing height: 25 mm, thickness: 0.8 mm

Before test ZAM® — Before test

60 cycles ZAM® — 60 cycles

120 cycles ZAM® — 120 cycles

ZAM® thickness: 0.8 mm 90/90 g/m2 ZC treatment

Before test Post galvanized (Electrogalvanized) 100/100 g/m2
Chromate 100 mg/m2 — Before test

60 cycles Post galvanized (Electrogalvanized) 100/100 g/m2 Chromate 100 mg/m2 — 60 cycles

120 cycles Post galvanized (Electrogalvanized) 100/100 g/m2 Chromate 100 mg/m2 — 120 cycles

Post galvanized (Electrogalvanized) 100/100 g/m2 Chromate 100 mg/m2

*Post galvanizing was conducted after processing. The cut edges were sealed.

Reference scale: 20mm