Stainless steel
Passivation
Passivation removes free iron contamination from stainless steel and restores the chromium-rich oxide layer, improving corrosion resistance with no measurable coating added. We use the citric process — an environmentally friendlier alternative to nitric — to AMS 2700 Type 2. For aluminium and zinc conversion coatings, see our conversion coatings service.
- Material
- Stainless steels
- Standard
- AMS 2700 Type 2 (Citric)
- Turnaround
- 3–5 working days
Passivation: citric acid (stainless steel)
Citric passivation removes free iron contamination from stainless steel and restores the chromium-rich oxide layer, which improves corrosion resistance. We use the citric process, an environmentally friendlier alternative to nitric, with no measurable coating added. For aluminium and zinc, see conversion coatings.
| Materials | Stainless steels |
|---|---|
| Coating | None measurable (a cleaning/restoration process) |
| Standards | AMS 2700 Type 2 (Citric), RoHS & REACH |
| Turnaround | Typically 3–5 working days · express available |
| Typical uses | Medical, food processing, marine, aerospace, precision stainless components |