Work Item
ASTM WK76140

Revision of E399-20a Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness of Metallic Materials


The purpose of this work item is to make additional changes to E399 based on comments that were received during the revision process resulting in E399-20a but that were unrelated to the proposed changes or required significant additional work to formulate a well thought out proposal. The proposed changes include: (1) Expanding the allowed stress ratio for fatigue precracking in Annex E8; (2) Modify the requirements for compression preloading; (3) adding notes on warm prestressing effects; (4) modifying Note 8 and para. 5.1.6 on residual stress influence; and (5) modifying para. 8.3 to provide guidance on machine control modes.


Developed by Subcommittee: E08.07

Committee: E08

Staff Manager: Brian Milewski

Work Item Status

Date Initiated: 03-03-2021

Technical Contact: Gary Bray