METASU YFK-IAA / IBA
Trivalent chromium black passivation for zinc-iron plating
<Characteristics>
- Contains trivalent chromium and produces a more shiny black appearance compared to conventional agents.
- Ideal black passivation for zinc-iron plating.
- Offers extended service life, lower replenishment rate and more attractive appearance compared to conventional passivation agents.
- Corrosion resistance lasts from 120hr - 168hr and more with no white rust.
- Does not contain silver or dyes.
The benefits described above are results obtained at YUKEN, and performance in customer environment should be verified separately.
Product Specifications
Attributes
| Appearance | Dark blue strongly acidic liquid (METASU YFK-IAA) Red strongly acidic liquid (METASU YFK-IBA) |
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Bath makeup conditions
| Chemicals used | Usage range |
|---|---|
| METASU YFK-IAA | 30 – 90ml/L |
| METASU YFK-IBA | 60 – 120ml/L |
Usage conditions
| Item | Range | Remark | ||
|---|---|---|---|---|
| Process temperature | 30 – 50°C | |||
| Process time | 40 – 60 seconds | |||
| pH | 1.6 – 2.2 | Verify pH value before usage. Use caustic soda or hydrochloric acid for adjustment if pH value falls outside of the specified range. ◎ The pH value must be adjusted to 1.8 during bath makeup. |
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| Agitation | Yes | In the case of basket processing, use vibratory agitation. In the case of rack processing, use air agitation or vibratory agitation. |
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Replenish conditions
| Chemicals used | Replenishment reference (standard) |
|---|---|
| METASU YFK-IAA | 30mL/100dm2 |
| METASU YFK-IBA | 50mL/100dm2 |
| Synthetic hydrochloric acid | pH adjustment |
Inquiry about the product
Feel free to contact us if you have any questions or matters to discuss.
