252 high corrosion resistant yellow trivalent chromating passivation
2017-12-14
code：252
name：252 high corrosion resistant yellow trivalent chromating passivation
1.contains no cr(ⅵ) and oxidant , thereby producing no cr(ⅵ) in the deposits, which has been verified for sgs standard. it is an environmentally friendly product and adapted for the exported orders to european and america.
2.produces clean, bright and slightly iridescent yellow film, which is not easy to be hazy.
3.exhibits strong corrosion resistance, the deposits by rack plating not sealed can last 200-300 hours in astm b-117 neutral salt spraying without white rust and the deposits by barrel plating can last 120 hours. it is especially good for automotive part industry.
4.the corrosion resistance and appearance remain after heat treatment.
5.252a for make-up and 252b for replenishment., easy operation and maintenance, long lasting and low costs.
make-up: ts-252 80--120ml/l.
consumption:ts-252 yellow chromating agent: 1.5-2.5l/10000dm2（weight:1 ton）.
