I couldn't add aluminium sigma profile in inventor 2017. May someone help to me ?
sample photo from; http://chennai.all.biz/aluminium-extrusion-profile-45mm-g605165
You can create an iPart for the profile with the parameters table and select then.
or you can use the sample files from Autodesk Inventor official website .
one of the assemblies I think has the sigma profile part