Cr(III) based aluminium surface treatment solution for chemical conversion & sealing after anodizing. High level of corrosion resistance on 2XXX & 7XXX series aluminium alloys. REACH compliant alternative to Cr(VI).
SOCOSURF TCS and SOCOSURF PACS are an alternative process to Chromium VI for conversion treatments and for sealing after anodizing. On aluminium alloys, the corrosion protection provided is comparable to that of hexavalent chromium (Cr(VI)).
Corrosion resistance on 2XXX and 7XXX series alloys: > 168h SST
Electrical conductivity: meets the requirements of MIL-DTL-81706B Type II Class 3, before 2/5 and after salt spray on Al 6061 T6.
Layer weight: >108 mg/m², 1.08 mg/dm2, 10 mg/ft².
Paint adhesion: grade 0/grade 0 and 1 (ISO 2409) after conversion (before /after 14 days water immersion).
Process performances are constant and reproducible.