To Export Selected Objects to an IGES file
Click
Application menu
Export
Other Formats
.
In the Export Data dialog box, in the Files of type box, select IGES (*.igs, *.iges).
In the File Name box, specify the name of the IGES file.
Click Save.
Select the objects to export and press ENTER to begin the export process.
When export is finished, a notification bubble is displayed.