Hi Steph100,
I take it you are referring to Weir Materials?
The problem is a number of multi national oil&gas end users are recently stating that material must be from Zeron100 as there is a lot of poor quality UNS32760 in the market failing with sigma phase and corrosion testing.
As far as I am aware Weir is the only supplier of Zeron100.
Can you use UNS32760 to Norsok M630, if so, this is readily available in the UK. Go into google and type Super duplex in sheffield. This will give you a good list and quality is on par with Zeron100.