METASU YFA-BMA / HRA
Trivalent chromium clear passivation
Passivation agent with excellent corrosion resistance formulated for barrel plating.
<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 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 |
Usage conditions
| Item | Range | Remark | |
|---|---|---|---|
| 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-BMA | 10ml/100dm2 |
| 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
Feel free to contact us if you have any questions or matters to discuss.
