ASTM F2111-01a

Standard Practice for Measuring Intergranular Attack or End Grain Pitting on Metals Caused by Aircraft Chemical Processes

SCOPE
1.1 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.
1.2 The standard does not purport to address all qualification testing parameters, methods, critical testing, or criteria for aircraft production or maintenance chemical qualifications. Specific requirements and acceptance testing along with associated acceptance criteria may be found where applicable in procurement specifications, materials specifications, or appropriate process specifications.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Nov-2001
• ICS: 19.040 - Environmental testing
• ICS: 49.025.01 - Materials for aerospace construction in general
• Technical Committee: F07 - Aerospace and Aircraft
• Drafting Committee: F07.07 - Qualification Testing of Aircraft Cleaning Materials

Relations

• Replaces: ASTM F2111-01 - Standard Practice for Measuring Intergranular Attack or End Grain Pitting on Metals Caused by Aircraft Chemical Processes
• Effective Date: 10-Nov-2001
• Replaced By: ASTM F2111-01a(2005)e1 - Standard Practice for Measuring Intergranular Attack or End Grain Pitting on Metals Caused by Aircraft Chemical Processes
• Effective Date: 01-Sep-2005

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F2111–01a
Standard Practice for
Measuring Intergranular Attack or End Grain Pitting on
1
Metals Caused by Aircraft Chemical Processes
This standard is issued under the fixed designation F 2111; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 long transverse (LT)—the longest dimension perpen-
dicular to the rolling or extruded direction of the extrusion in
1.1 This practice covers the procedures for testing and
the original shape.
measuring intergranular attack (IGA) and end grain pitting on
3.1.2 pit—a depression or cavity with a width to depth ratio
aircraft metals and alloys caused by maintenance or production
of <6 to 1.
chemicals.
3.1.3 short transverse (ST)—the shortest dimension perpen-
1.2 The standard does not purport to address all qualifica-
dicular to the rolling or extruded direction of the extrusion in
tion testing parameters, methods, critical testing, or criteria for
the original shape.
aircraft production or maintenance chemical qualifications.
3.1.4 surface roughness (R )—filtered mean line µin. (µm)
Specific requirements and acceptance testing along with asso- a
as defined in ASME B46.1, Surface Texture.
ciated acceptance criteria shall be found where applicable in
procurement specifications, materials specifications, appropri-
4. Significance and Use
ate process specifications, or previously agreed upon specifi-
4.1 If not properly qualified, chemicals and chemical pro-
cations.
cesses can attack metals used during aircraft maintenance and
1.3 This standard does not purport to address all of the
production. It is important to qualify only processes and
safety concerns, if any, associated with its use. It is the
chemical formulas that do not have any deleterious effects on
responsibility of the user of this standard to establish appro-
aircraft metallic skins, fittings, components, and structures.
priate safety and health practices and determine the applica-
This test procedure is used to detect and measure intergranular
bility of regulatory limitations prior to use.
attackorpittingdepthcausedbyaircraftmaintenancechemical
2. Referenced Documents processes, hence, this test procedure is useful in selecting a
process that will not cause intergranular attack or end grain
2.1 ASTM Standards:
2
pitting on aircraft alloys.
E 3 Practice for Preparation of Metallographic Specimens
4.2 The purpose of this practice is to aid in the qualification
G 1 Practice for Preparing, Cleaning, and Evaluating Cor-
3
or process conformance testing or production of maintenance
rosion Test Specimens
chemicals for use on aircraft.
G 15 Terminology Relating to Corrosion and Corrosion
3
4.2.1 Actual aircraft processes in the production environ-
Testing
ment shall give the most representative results; however, the
G 46 Guide for Examination and Evaluation of Pitting
3
test results cannot be completely evaluated with respect to
Corrosion
ambient conditions which normally vary from day to day.
2.2 ASME Standard:
Additionally, when testing chemicals requiring dilutions, water
B46.1 Surface Texture (Surface Roughness, Waviness, and
4 quality and composition can play a role in the corrosion rates
Lay)
and mechanism affecting the results.
3. Terminology 4.2.2 Some examples of maintenance and production
chemicals include: organic solvents, paint strippers, cleaners,
3.1 Definitions of Terms Specific to This Standard:
deoxidizers, water-based or semi-aqueous cleaners, or etching
solutions and chemical milling solutions.
1
This practice is under the jurisdiction of ASTM Committee F07 on Aerospace
and Aircraft and is the direct responsibility of Subcommittee F07.07 on Qualifica- 5. Apparatus and Materials
tion Testing of Aircraft Cleaning Materials.
5.1 Metallurgical Microscope, capable of 5003 or greater
Current edition approved Nov. 10, 2001. Published January 2002. Originally
magnification with scaled filar units in microscope eyepiece.
published as F 2111 - 01. Last previous edition F 2111 - 01.
2
Annual Book of ASTM Standards, Vol 03.01.
5.2 Metallurgical Polishing Wheel, capable of polishing test
3
Annual Book of ASTM Standards, Vol 03.02.
specimen to a surface finish of 5-µin. R or finer.
4 a
Available from American Society of Mechanical Engineers, Headquarters,
Three Park Ave., New York, NY 10016-5990.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
F 2111
5.3 Noncorrosive Metallurgical Quality Polishing Media or should remove only corrosion products and not result in the
Compo
...