# Polypropylene (PP) — Galvanic series and surface energy of engineering materials

For Polypropylene (PP), surface energy (dyne/cm) is 29–31; condition is Untreated; needs treatment? is Yes, verified against its source on 2026-08-04.

- **Material:** Polypropylene (PP)
- **Surface energy (dyne/cm):** 29–31
- **Condition:** Untreated
- **Needs treatment?:** Yes

## What the source says

> Polypropylene (PP) | 29–31 | Untreated | Yes | Dyne pens | Requires corona treatment |

## Source

- https://kolorguide.com/surface-energy-chart-by-material/

Last verified: 2026-08-04. Review by: 2028-08-03.
Part of [Galvanic series and surface energy of engineering materials](https://referencesource.org/process-compatibility-coatings-adhesives-treatments/).