2511 High Corrosion Resistant Zinc-Iron Yellow Trivalent Chromating Passivation
Name：2511 High Corrosion Resistant Zinc-Iron 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 not sealed can last 200-300 hours by rack plating in ASTM B-117 neutral salt spraying without white rusts and can last 120 hours by barrel plating. It is especially good for automotive part industry.
4.The corrosion resistance and appearance remain after heat treatment.
5.2511A for make-up and 2511B for replenishment. Easy operation and maintenance, long lasting and low costs.
2511A Make up: 80-120ml/L.
2511B yellow chromating agent: 2-3L/10000dm2（weight:1 ton）.