Keywords

Rationale

Currently, E3039 is applicable to pipe steels according to the title of E3039-18. However, the basic methodology of E3039 should be applicable to structural steels in general. E3039 has recently been successfully applied to two common tank car Steels (TC128B and A516-70) during an investigation of large-scale ductile puncture fractures. Detailed experiments and results of crack-tip opening angle (CTOA) of these steels were presented at the E08.07.07 Task Group meeting during the ASTM May 2019 Committee Meetings. Further discussions on the proposed changes were held during the ASTM November 2019 Committee Meeting. The proposed modifications of pipe steels to ferritic steels are to broaden the application of E3039 from pipe steels to structural ferritic steels. The proposed modifications will use the same terminology of ferritic steels as used in E436 (Test Method for Drop-Weight Tear Tests of Ferritic Steels).