BS EN 3666:2020 pdf free.Aerosnace series一Heat resisting alloy. BS EN 3666 This document specifles the requirements relating to: Heat resisting alloy NI-PH2601 Solution treated and cold worked Bar for forged fasteners Ds50mm 1 550 MPas Rm≤1 830 MPa for aerospace applications.2 Normative references The following documents are referred to in the text in such a way that some or all...