The only rvm to step conversion we know of, would be a conversion (or export) of AVEVA PDMS projects (.rvm) to ISO STEP product data file (.stp, .step). For this conversion, you probably need to use some of the 3rd party converter, for example 3D Object Converter.
Convert AVEVA PDMS project to ISO-10303 STEP product data.
We found one software available in the database for this conversion.
Microsoft Windows software - convert rvm to step on Windows
3D viewer and converter with huge file type support
Convert from rvm file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.