Blue etch (Titanium Alloy)
Blue Etch (blue attack) is an anodizing process performed in a bath of trisodium phosphate followed by a controlled pickling operation to remove the oxide layer formed during this phase of anodizing.
Scope of application
The purpose of the process is to highlight the structure and detect visible indications on the surface such as:
This instruction applies to titanium and titanium alloy parts in all states of machining or rough from the forge if our customer requests a Blue anodic attack or "Blue Etch".
This instruction can be supplemented by specific instructions on the inspection range specific to the exhibit after our customer’s agreement.
DMC 0326 /AMS 2642 (SAFRAN), P3TF25 S12 (GE Aviation) and EIM code 3 (Pratt & Whitney) specifications
Sectors concerned: Aerospace, Medical, energy, etc.
This process is not affected by ELV, RoHS or REACH regulations.