Autodesk Inventor has the support for IGES/IGS format so it should be pretty easy to convert iam to iges using that. You can also probably find some dedicated CAD converters that will help you with this iam to igs conversion.
Home > Search converters: iam to igs
Conversion of iam file format to igs file format beta
Search for iam to igs converter or software able to handle these file types.
Convert Autodesk Inventor assembly data to IGES 3D exchange format.
We have found 8 software records in our database eligible for .iam to .igs file format conversion.
Microsoft Windows software 
- convert iam to igs on Windows
CrossManager
A CAD converter with huge format support
File extension | Convert | Open | Save | Edit | Create | Import | Export | Extract |
|---|---|---|---|---|---|---|---|---|
Convert from iam file | No | No | No | No | No | Yes | No | No |
to igs file | No | No | No | No | No | Yes | Yes | No |
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned iam to igs. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
3ds Max (3D Studio Max)
A widely-used 3D animation application from Autodesk
PolyTrans|CAD+DCC
A 3D CAD translation software
TransMagic
A dedicated CAD converter
Autodesk Inventor
Autodesk Inventor is modeling application used to create 3D digital prototypes
EnSuite
A CAD visualizaton, analyzation and translating system
3D-Tool
A CAD viewer program with conversion capabilities
On-line services software 
- convert iam to igs on web
Online CAD converter
A commercial online CAD converter
Additional links: Open iam file, Open igs file
IAM
Files with iam file suffix may be usually found as assembly files created and saved in the Autodesk Inventor program.
IGS
Files with igs extension can be found as 3D graphics models saved in International Graphics Exchange Standard (IGES) format used for data exchange.
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