# Electroless Nickel Plating (ENP)

> Plating without electricity: dead-uniform thickness everywhere, bores and threads included.

- Process group: Plating
- HTML page: https://fabvector.com/finishes/electroless-nickel-plating (Portuguese: https://fabvector.com/pt/finishes/electroless-nickel-plating)

## Specifications

| Spec | Value |
|---|---|
| Coating thickness | 8–50 µm |
| Tolerance impact | Deposits uniformly within ±10% of nominal thickness across any geometry — deep bores and threads receive the same coat as outer faces. We machine compensated dimensions and reliably land final size even on IT7 / ±0.01 mm features. |
| Corrosion rating | 500–1,000 h salt spray (high-phosphorus grades, ASTM B733). |
| Appearance | Uniform satin silver, slightly warmer than electrolytic nickel; follows the underlying texture. |
| Applicable substrates | steel, aluminum, copper-alloys, invar-36 |

## Not suitable for

Extreme-abrasion or very thick builds above ~75 µm (hard chrome keeps the edge there); surfaces later welded (nickel-phosphorus contaminates welds); zinc die castings and magnesium without special pretreatment; budgets where commodity zinc is sufficient.

## Typical applications

- Hydraulic spools and valve components
- Mold cores and cavity inserts
- Aluminum parts needing a hard, solderable wear surface
- Precision fits and internal bores that electroplating cannot coat evenly