Convert IAM to CGR

Understanding IAM and CGR file formats

IAM files are Autodesk Inventor Assembly files, used to store 3D assembly data in Autodesk Inventor. These files contain references to multiple part files (IPT) and define how these parts fit and work together in a 3D environment.

CGR files are CATIA Graphical Representation files, a lightweight 3D visualization format used by Dassault Systèmes CATIA. CGR files are optimized for fast loading and sharing of 3D models without exposing full design data.

Why convert IAM to CGR?

Converting IAM to CGR is common when sharing 3D assemblies with CATIA users or for visualization purposes, as CGR files are much smaller and protect intellectual property by not including full model details.

How to convert IAM to CGR

Direct conversion from IAM to CGR is not natively supported in most CAD software. The typical workflow involves exporting the IAM assembly to a neutral 3D format (such as STEP or IGES), then importing that file into CATIA and saving it as a CGR file.

Recommended software for conversion

• Autodesk Inventor: Export your IAM file to STEP or IGES via File → Export → CAD Format.
• CATIA: Import the STEP/IGES file using File → Open, then save as CGR with File → Save As and select CGR as the format.
• Autodesk Inventor and CATIA both require valid licenses for this workflow.

Best practices and tips

• Check assembly references in IAM before export to ensure all parts are included.
• After importing to CATIA, verify geometry and assembly structure before saving as CGR.
• For batch conversions or automation, consider third-party tools like Autodesk Inventor Server or 3DTransVidia.