# ULTEM 9085

Strong and heat-resistant, ULTEM 9085 (Selective Deposition FDM), PEI, aerospace-grade, FST-rated

Fused Deposition Modeling (FDM)

[Get a Quote](/content/model/material-configurator/upload/index.html)

## Material Info

### About

**This material is available on request**  
Minimum order quantities apply. Contact our team to discuss your project requirements. Upload your design and we will review it and get back to you with a tailored quote

ULTEM 9085 is a flame-retardant polyetherimide (PEI) for FDM that combines high strength-to-weight, excellent heat resistance, and FST performance for transportation interiors and demanding industrial use. Ideal when you need production-grade thermoplastic performance straight off the printer.

### Color & Finishes

**Print mode - Solid**  
Prints fully solid models

**Print mode - Custom infill (on request)**  
Lightweight or partially filled structures (e.g. 20–50%) available by review

### Technology

- **Fused Deposition Modeling (FDM)**  
  
[mds_fdm_ultem9085_0525a](/content/wp-content/uploads/2025/11/mds_fdm_ultem9085_0525a.pdf)

### Material Properties

- **Tensile Strength (ASTM D638)**  
  81 MPa

- **Tensile Modulus (ASTM D638)**  
  2400 MPa

- **Elongation at Break (ASTM D638)**  
  6.0%

- **Heat Deflection Temp @ 0.455 MPa (ASTM D648)**  
  153°C

### Description

Material Highlights
- High-performance thermoplastic with exceptional strength-to-weight ratio, high heat resistance, and inherent flame retardancy; ideal for aerospace and transportation.
- Optical properties: Amber translucent (not optically clear); limited light transmission.
- Moisture resistance: Excellent — low water absorption, maintains stability in humid environments.
- Applications: Aerospace components, electrical housings, automotive interiors, functional prototypes, flame-retardant enclosures.

## Design Guidelines

### Bounding Box

- **Maximum Bounding Box** 914 x 609 x 914 mm (natural)  
- **Minimum Bounding Box** X + Y + Z ≥ 15 mm

### Walls

- **Supported Walls** 1.2mm  
- **Unsupported Walls** 1.5mm

### Wires

- **Supported Wires** 1.2mm  
- **Unsupported Wires** 1.5mm

### Details

- **Embossed Details** 0.5mm  
- **Engraved Details** 0.3mm

### Clearance

- **Minimum** 0.30 mm

### Sprues

- **Not supported**

### Interlocking & Enclosed Parts

- **Interlocking** Not supported  
- **Enclosed** Not supported

### Multiple Parts

- Not supported

### Parts in File

- 1

### Accuracy

- ± 0.3% with a lower limit of ± 0.3 mm

## Related Materials

Acrylonitrile Styrene Acrylate  
**Application:** A high-performance, weather-resistant thermoplastic ideal for outdoor applications.  
[Learn More →](/content/materials/fdm-asa/index.html)

Polyethylene Terephthalate Glycol  
**Application:** Strong, impact-resistant, excellent all-round material that is easy to print, and has a good surface finish.  
[Learn More →](/content/materials/fdm-petg/index.html)