5456 H111 Critical Stress Intensity

[boo1]

What is/where 5456 H111 critical stress intensity, Kic ?

We have sensitized 20 year old 5456 H111 exposed to marine environment. Both 1 inch and 3/8 inch think extrusions with multiple cracks. I am trying to calculate the allowable surface crack length, Ac (assuming 18ksi, semi circular crack)

 

[metengr]

Where? Possibly

http://www.asminternational.org/doc...tter.pdf/17ca9c4d-5da2-4e6d-be6c-15cd656c4da9

NORSOK STANDARD ALUMINIUM STRUCTURAL MATERIAL M-121

 

[boo1]

Fracture Resistance of Aluminum Alloys does not have 5456 H111 critical stress intensity, Kic data. Any other ideas?

 

[EdStainless]

Is it listed in MMPDS? I don't have a copy handy, but i know that alloy is covered, just not sure which properties.

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P.E. Metallurgy, Plymouth Tube

 

[boo1]

I checked MMPDS, and did not find Kic

 

[Maui]

Keep in mind that the orientation relative to the rolling direction can have a substantial influence on the Kic values in aluminum alloys. Not only do you need to specify the alloy, but the orientation too.

Maui

 

[boo1]

5456 H111 S-L