BS Standards BS EN 3666:2020 pdf download BS EN 3666:2020,Aerospace series - Heat resisting alloy NI-PH2601 - Solution treated and cold worked - Bar for forged fasteners - D ≤ 50 mm - 1 550 MPa ≤ Rm ≤ 1 830 MPa.BS EN 3666:2020... 09-09 Read More