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Impact Test Direction: ASME Section VIII, Div. 1

Impact Test Direction: ASME Section VIII, Div. 1

Impact Test Direction: ASME Section VIII, Div. 1

(OP)
Does ASME Section VIII, Div 1 mention a specific direction i.e. longitudinal or transverse, for carrying out the impact test on the material? It mentions the required impact energy but I was unable to find the direction in which it should be tested. As a reference, API 650 & 620 provide different impact test values for transverse and longitudinal directions.

RE: Impact Test Direction: ASME Section VIII, Div. 1

I think ASME refers to ASTM A370 for impact testing preceedure.  I don't have a copy in hand to check A370 as far as orientation of the specimen.  I do know that some material specs call for testing in the trnsverse direction rather than the more typical longitudinal direction.

Joe Tank

RE: Impact Test Direction: ASME Section VIII, Div. 1

You should review the material specification (ASTM/ASME) for specific requirements concerning orientation of CVN impact specimens. The requirements in Section VIII, Div 1 provide rules for exemptions of impact testing based on thickness and material product form and heat treatment.

RE: Impact Test Direction: ASME Section VIII, Div. 1

Joetank is correct SA370 gives the test requirements and also states:
22.1.1 "Test location and orientation should be addressed by the specification. If not, for wrought products, the test location shal be the same as that for the tensile specimen and the orientation shall be longitudinal with the notch perpendicular to the major surface of the product being tested."
Applicable specs listed in table UG84.3 (2007 ASME Sec VIII Div.1)
hope this helps.

RE: Impact Test Direction: ASME Section VIII, Div. 1

(OP)
Thanks all for your guidance.

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