Ultracur3D® ST 45 3D printing material

Are you looking for a resistant resin material? Here are all the information you need about Ultracur3D® ST 45.


Surface Look

Ultracur3D® ST 45 Material Guide

What is Ultracur3D® ST 45?

Ultracur3D® ST 45 is a reactive urethane photopolymer developed by Forward AM for tough applications.

This resin material delivers high strength, as well as long-term toughness and good impact resistance. If you are looking to manufacture high-performance functional parts with great accuracy and advanced mechanical strength, Ultracur3D® ST 45 will perfectly suit your project. Ultracur3D® ST 45 is offering the possibility to get great translucent parts. 3D printed parts are manufactured using Digital Light Processing (DLP) technology, a 3D printing technique particularly adapted to mass-production. Please keep in mind that you will have to respect specific design guidelines to avoid any problems during the additive manufacturing process. Be sure to check the material design guidelines while creating your 3D file and before you send it for 3D printing.

What are the possible applications for Ultracur3D® ST 45?

Important: This material is not adapted for parts in contact with fluids.

  • Translucent parts

Use the translucency of this Ultracur3D® ST 45 material for your 3D printing projects such as transparent storage or housings, for example.

  • High details


Thanks to its high level of detail and its biocompatibility, you can use this resin material for medical projects, to create adapted tools for example*.

  • Impact resistance

Charpy notched: 1.39 kJ/m2
Elongation at break: 25%

Make the most of this Ultracur3D® ST 45 to print your projects requiring impact resistance and toughness. 

* Sculpteo is not certified to produce medical devices. Each user should take responsibility for the final use of the part. For any questions, please contact us.


The printing price of your design is calculated automatically the moment it is uploaded. As you modify your object (changing material, finishing, size, using our hollowing feature, etc.) you will note that the price changes automatically. The pricing is based on a series of factors, including total volume, object size, and bounding box – to name a few.

The estimated shipping time is also calculated automatically as the object is uploaded and each time you make a modification on it. Delivery time should be added to processing time.

For more information, check our pricing page

How does DLP technology work?

DLP technology is a resin 3D printing technology, the process uses a light source to cure the resin. The resin is contained within a vat, or tank, cured against a build platform, which slowly rises out of the tank as the part is formed, layer by layer. The digital light projector is the light source of a DLP 3D printer. The DMD (Digital Micromirror Device) is a component made of thousands of micromirrors. These micromirrors are used for navigating the light beam projected by the digital light projector.

What are the finishing options available?

Raw: Supports are removed from the model. Support scars/bumps will still be visible

We remove the support structures during our post-processing steps. The surfaces where the support structure comes in contact with the part will be visible but can be sanded and finished by a technician upon request

This means there are considerations you should keep in mind during the design of your part to facilitate not only the successful construction of your part but also the removal of support structures and the finishing of your surfaces.

Maximum size

192 × 108 × 330 mm (X – Y – Z)

The maximum size of your models are limited by the physical size of our 3D printers – nothing can be printed larger than the printer bed.

Layer thickness : 100µm
Accuracy : ± 200µm

Minimum wall thickness  0.6 mm

Stemmed elements with support0.6 mm
Stemmed elements without support1 mm

Angles under 45° require support structures.

Please keep in mind that surfaces that have connection with support won´t be as smooth as the surfaces without support.

Additional supports structure might be needed to prevent deformation during printing and post-processing.

Support structures on edges, holes and corners are difficult to remove and sometimes not possible.

Minimum height and width details

Embossed : 0.3 mm 

Engraved : 0.3 mm

Enclosed parts ?No
Interlocking parts ?No

Minimum spacing between fixed walls0.4 mm

Hollowing ?No

It is not possible to print a 3D file containing several objects, that’s why we cannot accept files that contain clusters of multiple objects. However, don’t worry, this doesn’t mean you’ll pay more for your multiple objects: to reduce the 3D printing cost, we set up a different price calculation as soon as you order two or more objects with this technology.

You can also use our online tools and see our tricks and tips on how to reduce your 3D printing price.

To get more information on our additive manufacturing service, you can contact our qualified sales team.

Grappe Material no.jpg

Value Norm
Tensile Strength62 MPaASTM D638
E Modulus2 300 MPaASTM D638
Elongation at Break25 %ASTM D638
Charpy notched, 23 °C1.39 kJ/m2ISO 179-1
HDT (0.45 MPa)73°CASTM D648

Ready to 3D print with Ultracur3D® ST 45?

With Sculpteo’s online 3D printing service you’re just a few clicks away from professional Ultracur3D® ST 45 3D printing. Your 3D model is printed with the highest quality and delivered straight to your door. 

Get started now!

Discover our other materials...