# PPSU (Radel)

> The sterilization survivor: tough where PEI is brittle, repeatable through thousands of steam cycles.

- Category: Engineering Plastics → high-performance
- HTML page: https://fabvector.com/materials/ppsu (Portuguese: https://fabvector.com/pt/materials/ppsu)
- Price index: $$$$ (1–5, 6061-T6 = $)

## Mechanical properties (typical values, not certified minimums)

| Property | Value |
|---|---|
| Tensile strength | 70 MPa |
| Yield strength | ~70 MPa |
| Hardness | ~R120 (Rockwell) |
| Density | 1.29 g/cm³ |
| Machinability | ★★★☆☆ (3/5) |
| Corrosion resistance | ★★★★☆ (4/5) |

## When to choose it

The part lives in the autoclave: PPSU endures thousands of 134 °C steam cycles without crazing and keeps the impact toughness PEI loses — the default for reusable instrument housings.

## When to look elsewhere

Maximum stiffness or strength per dollar is the goal — PEI is stronger and cheaper if impact and unlimited autoclaving are not required; PC suffices for single-sterilization disposables.

## Typical applications

- Surgical instrument handles and sterilization trays
- Reusable medical device housings
- Dental and lab equipment components
- Hot-water and steam fluid-handling parts

## Compatible surface finishes

- [As-Machined](https://fabvector.com/md/finishes/as-machined)
- [Laser Marking](https://fabvector.com/md/finishes/laser-marking)

Industries: medical-devices, aerospace, research · Instant quote: https://fabvector.com/quote