How to convert files from Unigraphics
to SAT?

Unigraphics is a former name for Siemens NX, an advanced CAD/CAM/CAE software application suite. However, veterans are still using the Unigraphics name.

In 2002, the new version of Siemens Unigraphics, merged with I-DEAS software, was released and called NX, which means "Next Generation". In fact, it was the last version of the software released under the Unigraphics name. All further releases became known as NX. So the addition of I-DEAS functionality to the core code of the Unigraphics has become the basis of the existing NX product line.

Siemens NX / Unigraphics use a .prt extension, which contains 3D CAD parts.

A SAT file is a 3D model used in ACIS CAD modeling software by Spatial Corporation.

The format's name stands for Standard ACIS Text, since the content of a SAT file is stored as ASCII text. In ACIS, the same data can also be saved in binary form with SAB extension.

SAT files are used to communicate 3D data across different 3D CAD tools, such as Spatial 3D ACIS Modeler, Autodesk AutoCAD 2017, IMSI TurboCAD Pro 2016, Dassault Systèmes SOLIDWORKS, etc.