No, I can't help you.  Since EN has chosen to not use UNS numbers (liked they promised to years ago) it is tricky.  You are basically forced to redesign things.
You can look up product forms and alloys in ASTM.  Then you look for similar alloys in EN tables, find out what specs cover them, and look for a spec that addresses the same product form that you need.
They are doing their job trying to obstruct international trade.

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Try a web search using the applicable standards and the characters "UNS".  Often you can get a cross reference to UNS this way.  If you know the EN or ASTM, do the same with the known standard and just the "ASTM" or "EN" ssearching for information that cross references.

Thank's for the useful tip, JLSeagull. I found it on the web finally... I was in a hurry at the moment...

EdStainless: Why do you have to redesign things? Just curious...

Some specs only apply to specific product forms, or the spec minimum mechanical properties are slightly diffrerent.  There is no direct equivalent, so in order to protect your company you have to find the closest match and then push the numbers to show that it will work fine.

= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm