Pitting corrosion, or pitting, is a form of extremely localised corrosion that leads to the random creation of small holes in metal extending from the metals surface. End Grain Pitting is specific to corrosion emanating from exposed end grain.

Jan 19, 2023 · This test procedure is used to detect and measure intergranular attack or pitting depth caused by aircraft maintenance chemical processes, hence, this test procedure is useful in selecting a process that will not cause intergranular attack or end grain pitting on aircraft alloys.

Measuring Intergranular Attack or End Grain Pitting on Metals Caused by Aircraft Chemical Processes 1 This standard is issued under the fixed designation F2111; the number immediately following the designation indicates the year of

The American Society for Testing and Materials developed the ASTM F2111 standard as an outline and resource for experts measuring the end grain pitting and intergranular attack (IGA) that occurs within aircraft alloys and metals exposed to production and maintenance chemicals.

The ASTM A262 specification covers the standard practices for detecting susceptibility to intergranular attack in austenitic stainless steels. The etch structure types used to classify the specimens are: step structure, dual structure, ditch structure, isolated ferrite, interdendritic ditches, end-grain pitting I, and end-grain pitting II.

EGP (End Grain Pitting) is localised corrosion resulting in a cavity or pit extending from the surface into the metal. IGA (Inter Granular Attack) and EGP (End grain Pitting) can occur during various stages of processing.

Nov 10, 2001 · Standard Practice for Measuring Intergranular Attack or End Grain Pitting on Metals Caused by Aircraft Chemical Processes

Dec 1, 2022 · This practice covers the procedures for testing and measuring intergranular attack (IGA) and end grain pitting on aircraft metals and alloys caused by maintenance or production chemicals.

This test procedure is used to detect and measure intergranular attack or pitting depth caused by aircraft maintenance chemical processes, hence, this test procedure is useful in selecting a process that will not cause intergranular attack or end grain pitting on aircraft alloys.

The etch structure types used to classify the specimens are: step structure, dual structure, ditch structure, isolated ferrite, interdendritic ditches, end-grain pitting I, and end-grain pitting II. 1. Scope.