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…that the material property data published in this report is not applicable when the
material is not procured to NMS 532/6. NMS 532/6 is a free, publicly available, nonproprietary aerospace industry material specification.
The data in this report is intended for general distribution to the public, either freely or at
a price that does not exceed the cost …
https://www.wichita.edu/industry_and_defense/NIAR/Research/cytec-5320-1/T650-3k-PW-2.pdf