DuPont™ Crastin® SC193 PBT-SAN is a polybutylene  terephthalate/styrene acrylonitrile resin blend with 30 percent  glass fiber reinforcement. This high-performance, injection  moldable material delivers high stiffness and creep resistance  for enhanced dimensional stability under static loads and over  an extended period of time. The addition of SAN, together with  glass fiber, creates a more homogeneous shrinking pattern  across the part for reduced warpage, while minimizing overall  shrinkage.  

As a healthcare material, DuPontTM Crastin® SC193 resin has  been tested in accordance with relevant medical standards and  is suitable for a broad range of sterilization methods.  

Potential applications include self-administered drug  delivery devices like auto injectors, especially those used  for highly viscous biologics, which require higher injection  force. DuPontTM Crastin® SC193 resin can also replace  metal in surgical, dental and laboratory tools—particularly  miniaturized tools like scalpels, drills or clamps that experience  concentrated pressure and stress.

Features

• High strength—tensile strength of 130 Megapascals  (MPa) • High stiffness—tensile modulus of 9,500 MPa  • Excellent creep resistance  • Homogeneous, minimal shrinkage • Custom colorable and printable 

Benefits 

 • High performance for demanding applications  involving significant load, injection stress and other  forces • Minimal deflection of spring-loaded parts • Low warpage for dimensionally stable parts • High strength-to-weight ratio to reduce operational  strain on patients and surgeons  • Expanded design freedom vs. metal • System cost reduction through high-volume injection  molding • Attractive finish for visual parts