Trivalent chromium clear passivation agent for rack plating

A passivation agent formulated for rack plating, with excellent corrosion resistance.

・It uses trivalent chromium.
・A coating with high corrosion resistance can be obtained with a single coat.
・It has self-healing property.
・Conventional chromating equipment can be used.

Product specifications


Appearance Dark purple strongly acidic liquid (METASU YFA-S)
Dark purple strongly acidic liquid (METASU YFA-SR)

Bath makeup

Chemicals used Usage range
METASU YFA-S 50~150ml/L

Usage conditions

Item Range Remarks
Process temperature 30~40℃
Process time 20-60 seconds
pH 1.7~2.1 Verify pH value before using. Adjust using nitric acid if the pH value falls outside of the specified range.
Agitation Air agitation or eductor agitation are to be used.

Replenish conditions

Chemicals used Replenishment reference (standard)
METASU YFA-SR 15ml/100dm2

* Adjust so that the pH value is within the specified range.

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