This specification covers a titanium alloy in the forms of investment castings having four grades of permissible discontinuities. AMS4991D has been revised to change the governing heat treat process control specification, add new provisions for certification and serialization, introduce purchaser allowance to use ASTM E 1320 radiographic standards, and results from a Five Year Review and update of this specification


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    Title :

    Titanium Alloy Castings, Investment 6Al - 4V Hot Isostatic Pressed, Anneal Optional


    Publication date :

    2010-04-19



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English