METASU YFE-M2(A) / HRA

Trivalent chromium clear passivation agent for rack plating

Trivalent chromium passivation agent provides temporary corrosion protection for steel, and superior corrosion resistance for cast and forged parts.

<Characteristics>

  • 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

Attributes

Appearance Dark purple strongly acidic liquid (METASU YFE-M2(A))
Transparent colloidal liquid (METASU YFE-HRA)

Bath makeup conditions

Chemicals used Usage range
METASU YFE-M2(A) 50 – 150ml/L
METASU YFE-HRA 0 – 20ml/L

Usage conditions

Item Range Remark
Process temperature 30 – 40°C
Process time 30 – 60 seconds
pH 1.8 – 2.4 Verify pH value before usage. Use nitric acid for adjustment if the pH value falls outside of the specified range.
Agitation Yes Use air agitation or pump stir to make the concentration of the processing liquid homogeneous.

Replenish conditions

Chemicals used Replenishment reference (standard)
METASU YFE-M2(A) 15ml/R
METASU YFE-HRA 5ml/R

1) Adjust the pH value to fall within the specified range.
Note) Use nitric acid for the pH value if there is an increase in chromium concentration.
The pH electrode should be well maintained for accurate measurement.

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