Me and Alex have completed working on PREN data of Magna Products based on your suggested new equation PREN/PREM = %Cr + 3.3 X % Mo + 30 N - Mn.
However we are working on other areas you have given in the chart like AWS filler metal compositions and Ni Alloy base metal compositions where we are finding some differences in your compositions and Normally used compositions of these base metal alloys specially for types Alloy 825 , 800 , 625. We are planning to give you 3 charts separately - 1. For Magna Products , 2 - For AWS fillers , 3 - For Ni Alloys with some suggestions from our side . Just give us 1 or 2 days more to properly complete the charts and rechecking the values before sending it to you.
If we can finish the charts by today , we will send it by to night or tomorrow morning.