AMS 5596K and AMS 5663. What is the equivalent of ISO 15156 for aerospace application?
The differences are in the degree of "mismatch". In the case of aerospace, normally a higher degree of "perfect" material is needed, so no segregations, equal grain size and the chemistry is often more limited to get a purer material.
Hi Jasmin. Thank you for your answer. Would you mind to elaborate more on what do you mean by "perfect" or "purer" material? Do you mean that there would be less impurities or undesirable phase? And what would contribute to the degree of "mismatch", aren't they supposed to be prepared according to the standards/specifications, thus having same/similar microstructure?
Mismatch cool be impurities, lattice mismatch, different grain sizes or also some stringers in the microstructure.
I thought of "perfect" in the kind of the crystal lattice (excluding impurities in a first step). so the material should have a better quality for aerospace application than the standard material.
E.g. it is known, that for In718 the aerospace material is not that sentitive to hydrogen embrittlement than the "normal" commercial one. So the quality of this material is better.
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