You are correct, in fact. I just noticed that the original information regarding their being forged on the main website has changed.
I am still volunteering to have these analysed to put this to an end. Anyone care to donate a broken (or whole) ej257 piston? I have already contacted a consulting materials engineer in the area who is willing to provide an affadavit regarding their construction process for a relatively modest fee. www.materialsengineer.com