METASU YFA-BMA / HRA
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.
|Appearance||Dark purple strongly acidic liquid (METASU YFA-BMA)
Transparent colloidal liquid (METASU YFA-HRA)
Bath makeup conditions
|Chemicals used||Usage range|
|METASU YFA-BMA||50 – 150ml/L|
|METASU YFA-HRA||5 – 50ml/L|
|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.|
|Chemicals used||Replenishment reference (standard)|
|METASU YFA-HRA||1 – 3ml/100dm2|
Adjust so that the pH value is within the specified range.
Replenish in the ratio of YFA-BMA：YFA-HRA = 10：1 – 3
Inquiry about the product
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