Description
Performance
index:
1ã€Thickness: thickness of coating
8～*2μm,Thickness with top-coating
****5μm;
2ã€No production of hydrogen
embrittlement: Acid washing is not needed for coating
pre-processing;
3ã€Free from bimetallic corrosion
threat: Aluminum eliminates Zn-Al or Zn-steel bimetallic corrosion
that occurs frequently in zinc coating;
4ã€Solvent resistance: the inorganic
coating features excellent solvent resistance;
5ã€Heat resistance: the coating
keeps excellent corrosion resistance after three hours heat
sensitization at **0℃;
6ã€Electric conductivity: with a
large number of metal flakes, the coating is
conductive;
7ã€Corrosion resistance: for thread
parts, water-based chromium-free Zn-Al coating of thickness ***0μm
can endure a salt spray test for **0 hours, without red rust; while
for non-thread fasteners, its over ***0 hours
8ã€Adhesion
performance:≥8Mpa
9ã€Scratch and Hardness: it is
superior to performance of the Zn-Cr coating, and hardness of the
coating surface is surpasses 8H.
*0ã€Friendly environmental
performance: without any form of chromium (such as trivalent and
hexavalent chromium etc)
*1ã€Different colours to meet
different requirements
