Description / Abstract:
This recommended practice establishes a test procedure for
determining the propensity of aircraft turbine engine cleaning and
maintenance materials for causing stress-corrosion cracking of
titanium alloy parts.
The evaluation is conducted on representative titanium alloys by
determining the effect of contact with cleaning and maintenance
materials on tendency of pre-stressed titanium alloys to crack when
subsequently heated to elevated temperatures.
Test conditions are based upon manufacturer's maximum
recommended operating solution concentration.
Chemical solutions and compounds used for pre-inspection
cleaning or for preservation of titanium alloy aircraft turbine
engine parts shall be subject to qualification requirements of this
test practice.
The test does not give consideration to cleaning or
corrosion-preventive properties of the compounds.