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  • ASTM
    F945-12 Standard Test Method for Stress-Corrosion of Titanium Alloys by Aircraft Engine Cleaning Materials
    Edition: 2012
    $93.60
    Unlimited Users per year

Description of ASTM-F945 2012

ASTM F945 - 12

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

Active Standard ASTM F945 | Developed by Subcommittee: F07.07

Book of Standards Volume: 15.03




ASTM F945

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 ) and one that is not very susceptible (AMS 4911 ) to stress corrosion cracking.

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 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see 5.3 and 5.6 .


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D740 Specification for Methyl Ethyl Ketone

D841 Specification for Nitration Grade Toluene

D1193 Specification for Reagent Water

SAE Aerospace Material Specifications

AMS4916 Sheet, Strip, and Plate-8AL 1MO 1V, Duplex Annealed

Keywords

controlled temperature conditions; engine cleaners; maximum operating concentration; metallographic inspection; prestressed titanium alloys; stress-corrosion cracking (SCC);


ICS Code

ICS Number Code 49.025.30 (Titanium)


DOI: 10.1520/F0945-12

ASTM International is a member of CrossRef.

ASTM F945

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.

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