This standard ( Part 1 ) prescribes the method for carrying out the blue fracture test for determining the macroscopic streaks of non-metallic inclusions in wrought steels.
IS 10138 Pt.1-1992 history
1992IS 10138 Pt.1-1992 Method for macroscopic determination of non-metallic inclusion content in forged steels Part 1 Blue fracture test method