(Solved): 7.24 The lower yield point for an iron that has an average grain diameter of 5 x 102 mm is 135 MPa ( ...
7.24 The lower yield point for an iron that has an average grain diameter of 5 x 102 mm is 135 MPa (19,500 psi). At a grain diameter of 8 x 10³ mm, the yield point increases to 260 MPa (37,500 psi). At what grain diameter will the lower yield point be 205 MPa (30,000 psi)? The data pertaining to this problem may be tabulated as follows: Ty 135 MPa 260 MPa d (mm) 5 x 10-2 8 × 10-3 1/2 (mm)-1/2 4.47 11.18
7.24 The lower yield poin for an iron that has an average grain diameter of 5×102mm is 135MPa(19.500 p5i). At a grain diameter of 8×103mm, the yield point increases 10260MPa(37,500psi). At what grain diameter will the lower yield point be 205MPa(30,000 psi)? The data pertaining to this problem may be tabulated as follows: