fracture toughness Kc of martensitic stainless steel X5CrNi13-4 2

[cbrn]

Hi,
excuse me if this question has already been asked,

I'm looking for the fracture toughness "Kc" of the martensitic stainless steel X5CrNi13-4 (forged), possibly for several different field types (e.g. "center cracked plate in tension", "single-edge crack in tension", and so on).
Any good sources? Sources where to find data for the Paris law of this material?

Thanks in advance,

Regards

 

[metengr]

cbrn;
Why do you need this very specific information? Here are some hits from Google;

http://www.google.com/search?hl=en&q=fracture+toughness+data+for+X5CrNi13-4&btnG=Google+Search

 

[arunmrao]

Alternately your alloy is very close to CA6NM and lot of data is available for this alloy. You may refer

SFSA Castings Handbook Supplement 8, High Alloy Data Sheets Corrosion Series.

http://www.sfsa.org/sfsa/pubs/hbk/s8.pdf

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[cbrn]

Hi,
thank you very much for your kind help!
The info is needed in order to determine the critical defect length in a zone of a part subjected to very high stresses, in order to check if the radiographic + ultrasonic controls can detect such kind of defects. On the other side, I have to determine the crack growth speed of a crack having a length equal to the minimum which can be revealed by the tests. The part is subjected to "Class 1" acceptability criteria.

I already googled with no good results, but probably my search-keys were different. The idea of looking for CA6NM is very valuable, thanks!

Regards