Trivalent chromium clear passivation

Passivation agent with excellent corrosion resistance formulated for barrel plating.

・Passivation agent that contains trivalent chromium.
・Coating with high corrosion resistance can be obtained with a single coat.
・Has self-healing property.
・Enhances resistance to heat and corrosion.
・Conventional chromating equipment can be used.

Product Specifications


Appearance Dark purple strongly acidic liquid (METASU YFA-BM(M))

Bath makeup conditions

Chemicals used Usage range
METASU YFA-BM(M) 50 – 150ml/L

Usage conditions

Item Range Remarks
Process temperature 30 – 40°C
Process time 20 – 60 seconds
pH 1.8 – 2.2 Verify pH value before usage. Use nitric acid for adjustment if the pH value falls outside of the specified range.
Agitation Yes Use a slow pump-stir setting to allow the concentration of the processing liquid to become homogeneous. To prevent any damage to the surface, allow 5 to 6 seconds of stoppage time before lifting the basket containing the processed products from the vibratory stir.

Replenish conditions

Chemicals used Replenishment reference (standard)
METASU YFA-BM(M) 10ml/100dm2

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

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