Active Standard: E1921 - 13
Modifications to Sections 1.8 and 9.3 are proposed and a new Section 5.3 has been added to address material inhomogeneity. Modifications to 1.8 clarifies the assumption within E1921 that the material is homogeneous, identifies that additional inaccuracies are associated with inhomogeneous materials, and references procedures that the user can employ if inhomogeneity is suspected. New Section 5.3 recommends separate metallographic analysis, mechanical testing, and toughness testing of possible nonuniform regions. Additionally, in Section 9.3, the use of the outlier evaluation to eliminate possible inhomogeneous material using current Equation 18 is proposed to be deleted. Guidance on interpreting outliers to identify possible inhomogeneities and then quantitatively assessing this inhomogeneity is also proposed.
Ballot Item Approved as E1921-2013A and Pending Publication