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process of phosphating

The process generally works at 70-98oC , %15-20 concentration and with 5-20 minutes immersion time. Manganese phosphate residues a coating 4-40 gr/m2 on the surface. It does not have a usage as under paint coating. Aluminium chromate and its applications: What we call as phosphating to steel an iron is called chromating for aluminium surfaces.

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