Ultracur3D ST 45

  • Quick printing and post processing
  • High strength, hardness, and impact strength
  • Biocompatible to ISO 10993 (cytotoxicity, irritation, sensitization)
  • Flammability certified to UL94 HB

Potential applications:

  • Highly detailed or textured parts
  • Rapid prototyping & production
  • Medical devices & prosthetics
  • Housings & enclosures



Material Description

Ultracur3D® 3D ST 45 by BASF is a biocompatible, flammability tested, general-purpose 3D printing material compatible with Stratasys Origin One 3D printers. ST 45 is a fast-curing urethane photopolymer designed for rapid prototyping & production printing. ST 45 features a versatile range of mechanical properties and moderate HDT, making it well suited for general-purpose engineering designs and consumer products. Printed parts retain high fidelity regardless of feature sizes or presence of textures – ideal for class A surfaces.

Consider when replacing ABS, Delrin.

Color options for ST45 are Black and Clear.

Material Testing

Flammability, Vertical  

UL 94 HB 


UV Ageing (38°C for 4032 hours)  

ISO 4892-2 


Glow Wire Test 

DIN EN 60695-2-11 



ISO 10993 

Reach out for more  information

Behavior and Use:


Hardness of Ultracur3D® 3D ST 45 by BASF


80 D

Elongation at Break of Ultracur3D® 3D ST 45 by BASF

elongation at break


HDT of Ultracur3D® 3D ST 45 by BASF


61° C

Tensile Yield Strength of Ultracur3D® 3D ST 45 by BASF


60 MPa

Tensile Modulus of Ultracur3D® 3D ST 45 by BASF

tensile modulus

2000 MPa

IZOD Impact of Ultracur3D® 3D ST 45 by BASF

izod impact (notched)

20 J/m

Case Studies and data sheets

Download Stratasys Origin One Camera Housing Case Study

Origin® One features several integrated cameras for computer vision and capturing temperature data in the IR range; additional sensors measure other environmental conditions during the print process.


Download Ultracur3D ST 45 Material Processing Guide

This material processing guide provides information about support tips, printing, part removal, cleaning, postcure, and general material best practices for Ultracur3D ST 45 by BASF material.


Download Stratasys Origin One ST 45 Material Technical Data Sheets

Technical Data Sheets

Ultracur 3D ST 45 by BASF is a multi-purpose resin with optimum toughness and processing speed. Download the technical data sheets for Clear, Black, and Medical for a better understanding of this material’s properties.



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