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ASTM F945-22

(Test Method)

Standard Test Method for Stress-Corrosion of Titanium Alloys by Aircraft Engine Cleaning Materials

Standard Test Method for Stress-Corrosion of Titanium Alloys by Aircraft Engine Cleaning Materials

SIGNIFICANCE AND USE
3.1 Because of the tendency of prestressed titanium alloy parts to crack if heated while in contact with certain chemical reagents, it is necessary to ensure that cleaning and maintenance materials will not initiate stress corrosion of titanium alloys under controlled conditions. For test specimens, two common titanium alloys are selected, one that is very susceptible (AMS 4916 or AMS 4919) and one that is not very susceptible (AMS 4911) to stress corrosion cracking.
SCOPE
1.1 This test method 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.  
1.2 The evaluation is conducted on representative titanium alloys by determining the effect of contact with cleaning and maintenance materials on tendency of prestressed titanium alloys to crack when subsequently heated to elevated temperatures.  
1.3 Test conditions are based upon manufacturer's maximum recommended operating solution concentration.  
1.4 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see 5.3 and 5.6.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
31-Aug-2022
ICS
49.025.30 - Titanium
Technical Committee
F07 - Aerospace and Aircraft
Drafting Committee
F07.07 - Qualification Testing of Aircraft Cleaning Materials
Current Stage
Ref Project

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Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F945 − 22
Standard Test Method for
Stress-Corrosion of Titanium Alloys by Aircraft Engine
1
Cleaning Materials
ThisstandardisissuedunderthefixeddesignationF945;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
INTRODUCTION
Chemical solutions and compounds used for preinspection cleaning or for preservation of titanium
alloy aircraft turbine engine parts shall be subject to qualification requirements of this test method.
1. Scope mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This test method establishes a test procedure for deter-
mining the propensity of aircraft turbine engine cleaning and
2. Referenced Documents
maintenance materials for causing stress corrosion cracking of
2
2.1 ASTM Standards:
titanium alloy parts.
D740 Specification for Methyl Ethyl Ketone
1.2 The evaluation is conducted on representative titanium
D841 Specification for Nitration Grade Toluene
alloys by determining the effect of contact with cleaning and
D1193 Specification for Reagent Water
3
maintenance materials on tendency of prestressed titanium
2.2 SAE Aerospace Material Specifications:
alloys to crack when subsequently heated to elevated tempera-
AMS 4911 Sheet, Strip and Plate-6AL-4VAnnealed 0.050”
tures.
Thick
AMS 4916 Sheet, Strip, and Plate-8AL 1MO 1V, Duplex
1.3 Test conditions are based upon manufacturer’s maxi-
Annealed 0.050” Thick
mum recommended operating solution concentration.
AMS 4919 Sheet, Strip, and Plate-6AL 2 Sn, 4 Zr, 2 Mo,
1.4 Units—The values stated in inch-pound units are to be
Duplex Annealed 0.050” Thick
regarded as standard. The values given in parentheses are
mathematical conversions to SI units that are provided for
3. Significance and Use
information only and are not considered standard.
3.1 Because of the tendency of prestressed titanium alloy
1.5 This standard does not purport to address all of the
parts to crack if heated while in contact with certain chemical
safety concerns, if any, associated with its use. It is the
reagents, it is necessary to ensure that cleaning and mainte-
responsibility of the user of this standard to establish appro-
nance materials will not initiate stress corrosion of titanium
priate safety, health, and environmental practices and deter-
alloys under controlled conditions. For test specimens, two
mine the applicability of regulatory limitations prior to use.
common titanium alloys are selected, one that is very suscep-
For specific precautionary statements, see 5.3 and 5.6.
tible (AMS 4916 or AMS 4919) and one that is not very
1.6 This international standard was developed in accor-
susceptible (AMS 4911) to stress corrosion cracking.
dance with internationally recognized principles on standard-
4. Apparatus
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
4.1 Measuring Devicecapableoflinearmeasurementwitha
60.01 in. (60.25 mm) tolerance.
1 2
This test method is under the jurisdiction of ASTM Committee F07 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Aerospace and Aircraft and is the direct responsibility of Subcommittee F07.07 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Qualification Testing of Aircraft Cleaning Materials. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Sept. 1, 2022. Published September 2022. Originally the ASTM website.
3
approvedin1985.Lastpreviouseditionapprovedin2019asF945 – 12(2019).DOI: Available from Society of Automotive Engineers, 400 Commonwealth Dr.,
10.1520/F0945-22. Warrendale, PA 15096.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F945 − 22
4 5
4.2 Press Forming Apparatus with 0.56 in. (14 mm) diam- where such specifications are available. Other grades may be
eter mandrel capable of producing approximately 65° bends in used, provided it is first ascertained that the reagent is of
0.050 in. (1.25 mm) titanium alloy sheet specimens. sufficiently high purity to permit its use without lessening the
accuracy of analysis.
4.3 Beakers or Small Tanks for containment of cleaning,
rinsing, and test solutions, appropriately lined to prevent
5.2 Purity
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F945 − 12 (Reapproved 2019) F945 − 22
Standard Test Method for
Stress-Corrosion of Titanium Alloys by Aircraft Engine
1
Cleaning Materials
This standard is issued under the fixed designation F945; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
INTRODUCTION
Chemical solutions and compounds used for preinspection cleaning or for preservation of titanium
alloy aircraft turbine engine parts shall be subject to qualification requirements of this test method.
1. Scope
1.1 This test method 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.
1.2 The evaluation is conducted on representative titanium alloys by determining the effect of contact with cleaning and
maintenance materials on tendency of prestressed titanium alloys to crack when subsequently heated to elevated temperatures.
1.3 Test conditions are based upon manufacturer’s maximum recommended operating solution concentration.
1.4 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.5 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use. For specific precautionary statements, see 5.3 and 5.6.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D740 Specification for Methyl Ethyl Ketone
D841 Specification for Nitration Grade Toluene
D1193 Specification for Reagent Water
1
This test method is under the jurisdiction of ASTM Committee F07 on Aerospace and Aircraft and is the direct responsibility of Subcommittee F07.07 on Qualification
Testing of Aircraft Cleaning Materials.
Current edition approved May 1, 2019Sept. 1, 2022. Published June 2019September 2022. Originally approved in 1985. Last previous edition approved in 20122019 as
F945 – 12.F945 – 12(2019). DOI: 10.1520/F0945-12R19.10.1520/F0945-22.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F945 − 22
3
2.2 SAE Aerospace Material Specifications:
AMS 4911 Sheet, Strip and Plate-6AL-4V Annealed 0.050” Thick
AMS 4916 Sheet, Strip, and Plate-8AL 1MO 1V, Duplex Annealed 0.050” Thick
AMS 4919 Sheet, Strip, and Plate-6AL 2 Sn, 4 Zr, 2 Mo, Duplex Annealed 0.050” Thick
3. Significance and Use
3.1 Because of the tendency of prestressed titanium alloy parts to crack if heated while in contact with certain chemical reagents,
it is necessary to ensure that cleaning and maintenance materials will not initiate stress corrosion of titanium alloys under
controlled conditions. For test specimens, two common titanium alloys are selected, one that is very susceptible (AMS 4916) 4916
or AMS 4919) and one that is not very susceptible (AMS 4911) to stress corrosion cracking.
4. Apparatus
4.1 Measuring Device capable of linear measurement with a 60.01-in. (60.25-mm)60.01 in. (60.25 mm) tolerance.
4
4.2 Press Forming Apparatus with 0.56-in. (14-mm)0.56 in. (14 mm) diameter mandrel capable of producing approximately 65°
bends in 0.050-in. (1.25-mm)0.050 in. (1.25 mm) titanium alloy sheet specimens.
4.3 Beakers or Small Tanks for containment of cleaning, rinsing, and test solutions, appropriately lined to prevent contamination
of the solutions
...

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5.1 This test method is designed to determine the temperature at which the Wet Blue or Wet White specimen experiences shrinkage. In this test method, shrinkage occurs as a result of hydrothermal denaturation of the collagen protein molecules which make up the fiber structure of the Wet Blue or Wet White. The shrinkage temperature of Wet Blue or Wet White is influenced by many different factors, most of which appear to affect the number and nature of crosslinking interactions between adjacent polypeptide chains of the collagen protein molecules. The value of the shrinkage temperature of Wet Blue or Wet White is commonly used as an indicator of the type of tannage or the degree of tannage, or both, of that particular Wet Blue or Wet White (especially for the more hydrothermally stable tannages such as chrome tannage).
SCOPE
1.1 This test method covers the determination of the shrinkage temperature of all types of Wet Blue and Wet White. The heating medium is water when the shrinkage temperature is at or below 98 °C. The heating medium is a glycerine-water solution when the shrinkage temperature is above 98 °C.  
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM D8530/D8530M-23(Guide)
Standard Guide for the Selection and Use of Waterstops

SIGNIFICANCE AND USE
4.1 This guide is intended to be used in the selection and installation of waterstops in cast-in-place concrete construction. This guide is intended to assist the building owner, owner’s representative, architect, engineer, contractor, and/or authorized inspector during the specification and installation of waterstops.  
4.2 This guide is applicable to cast-in-place concrete construction. The use of this guide may not be appropriate for installation of waterstops in other types of concrete construction, including but not limited to, pneumatically applied (that is, shotcrete) and precast concrete construction.
SCOPE
1.1 This guide covers the use of waterstops within cast-in-place concrete construction. Waterstops are generally placed within static, non-moving construction joints in concrete to close off the joint to water, which may be under significant hydrostatic pressure. They are used as part of the overall waterproofing strategy for a building or other structure. Expansion and other types of moving joints may require the use of waterstops, which can accommodate the anticipated movement of the structure and are beyond the scope of this guide.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents: therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM E2956-23(Guide)
Standard Guide for Monitoring the Neutron Exposure of LWR Reactor Pressure Vessels

SIGNIFICANCE AND USE
4.1 Regulatory Requirements—The USA Code of Federal Regulations (10CFR Part 50, Appendix H) requires the implementation of a reactor vessel materials surveillance program for all operating LWRs. Other countries have similar regulations. The purpose of the program is to (1) monitor changes in the fracture toughness properties of ferritic materials in the reactor vessel beltline6 resulting from exposure to neutron irradiation and the thermal environment, and (2) make use of the data obtained from surveillance programs to determine the conditions under which the vessel can be operated with adequate margins of safety throughout its service life. Practice E185, derived mechanical property data, and (r, θ, z) physics-dosimetry data (derived from the calculations and reactor cavity and surveillance capsule measurements (1) using physics-dosimetry standards) can be used together with information in Guide E900 and Refs. 4, 11-18 to provide a relation between property degradation and neutron exposure, commonly called a “trend curve.” To obtain this trend curve at all points in the pressure vessel wall requires that the selected trend curve be used together with the appropriate (r, θ, z) neutron field information derived by use of this guide to accomplish the necessary interpolations and extrapolations in space and time.  
4.2 Neutron Field Characterization—The tasks required to satisfy the second part of the objective of 4.1 are complex and are summarized in Practice E853. In doing this, it is necessary to describe the neutron field at selected (r, θ, z) points within the pressure vessel wall. The description can be either time dependent or time averaged over the reactor service period of interest. This description can best be obtained by combining neutron transport calculations with plant measurements such as reactor cavity (ex-vessel) and surveillance capsule or RPV cladding (in-vessel) measurements, benchmark irradiations of dosimeter sensor materials, and knowledge of th...
SCOPE
1.1 This guide establishes the means and frequency of monitoring the neutron exposure of the LWR reactor pressure vessel throughout its operating life.  
1.2 The physics-dosimetry relationships determined from this guide may be used to estimate reactor pressure vessel damage through the application of Practice E693 and Guide E900, using fast neutron fluence (E > 1.0 MeV and E > 0.1 MeV), displacements per atom (dpa), or damage-function-correlated exposure parameters as independent exposure variables. Supporting the application of these standards are the E853, E944, E1005, and E1018 standards, identified in 2.1.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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    12 pages
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  • Guide
    12 pages
    English language
    sale 15% off