As per B31.3 Impact test acceptance

Gokul Vijay · Feb 25, 2022

As per B31.3 Impact test acceptance criteria, what should be minimum absorbed energy for Duplex SS , it’s given there only lateral expansion values. What about energy min energy to be absorbed?

DVWE · Feb 25, 2022

There is no requirement as indicated in the document. Toughness is measured in this manner for these materials.

Test labs will still report absorbed energy if requested.

The devil is in the details; she also wears prada.

OZWelder · Apr 29, 2022

There is no requirement for energy values only lateral expansion. how ever I have had clients (one any way) that only would accept energy absorbed, there acceptance was 45J single and 50J average. This was for S31803 duplex.

SJones · Apr 29, 2022

A lot of users ( I certainly am) are now overlaying ISO 17781. QL II can be considered as a bit lenient. Quality duplex should have no problem hitting QL I

Steve Jones
Corrosion Management Consultant

http://www.linkedin.com/in/drstevejones

All answers are personal opinions only and are in no way connected with any employer.

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As per B31.3 Impact test acceptance

Gokul Vijay

Mechanical

DVWE

Petroleum

OZWelder

Mechanical

SJones

Petroleum

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