ASTM D2512-17
(Test Method)Standard Test Method for Compatibility of Materials with Liquid Oxygen (Impact Sensitivity Threshold and Pass-Fail Techniques) (Withdrawn 2023)
Standard Test Method for Compatibility of Materials with Liquid Oxygen (Impact Sensitivity Threshold and Pass-Fail Techniques) (Withdrawn 2023)
SIGNIFICANCE AND USE
4.1 When this test method is used to measure the threshold impact sensitivity of a material, a relative sensitivity assessment is obtained which permits the ranking of materials.
4.2 This test method may also be used for acceptance-testing materials for use in liquid oxygen systems. Twenty separate samples of the material submerged in liquid oxygen are subjected to 98 J (72 ft·lbf) or as specified. Impact energy delivered through a 12.7-mm (1/2-in.) diameter contact. More than one indication of sensitivity is cause for immediate rejection. A single explosion, flash, or other indication of sensitivity during the initial series of 20 tests requires that an additional 40 samples be tested without incident to ensure acceptability of the material.
4.3 The threshold values are determined by this test method at ambient pressure. The sensitivity of materials to mechanical impact is known to increase with increasing pressure. Since most liquid oxygen systems operate at pressures above ambient condition, some consideration should be given to increased sensitivity and reactivity of materials at higher pressure when selecting materials for use in pressurized system.
SCOPE
1.1 This method2,3,4 covers the determination of compatibility and relative sensitivity of materials with liquid oxygen under impact energy using the Army Ballistic Missile Agency (ABMA)-type impact tester. Materials that are impact-sensitive with liquid oxygen are generally also sensitive to reaction by other forms of energy in the presence of oxygen.
1.2 This standard should be used to measure and describe the properties of materials, products, or assemblies in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use.
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.
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.
WITHDRAWN RATIONALE
This method covered the determination of compatibility and relative sensitivity of materials with liquid oxygen under impact energy using the Army Ballistic Missile Agency (ABMA)-type impact tester. Materials that are impact-sensitive with liquid oxygen are generally also sensitive to reaction by other forms of energy in the presence of oxygen.
Formerly under the jurisdiction of Committee G04 on Compatibility and Sensitivity of Materials in Oxygen Enriched Atmospheres, this test method was withdrawn in July 2023 and replaced by Test Method G86 for Determining Ignition Sensitivity of Materials to Mechanical Impact in Ambient Liquid Oxygen and Pressurized Liquid and Gaseous Oxygen Environments.1
General Information
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: D2512 − 17
Standard Test Method for
Compatibility of Materials with Liquid Oxygen (Impact
1
Sensitivity Threshold and Pass-Fail Techniques)
This standard is issued under the fixed designation D2512; 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.
1. Scope 2. Referenced Documents
2,3,4 5
1.1 This method covers the determination of compatibil- 2.1 ASTM Standards:
ity and relative sensitivity of materials with liquid oxygen C145 Specification for Solid Load-Bearing Concrete Ma-
6
under impact energy using the Army Ballistic Missile Agency sonry Units (Withdrawn 1992)
(ABMA)-type impact tester. Materials that are impact-sensitive D1193 Specification for Reagent Water
with liquid oxygen are generally also sensitive to reaction by
2.2 Military Standards:
other forms of energy in the presence of oxygen.
MIL-D-16791G Detergent, General Purpose (Liquid, Non-
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1.2 This standard should be used to measure and describe ionic)
7
MIL-P-27401C Propellant Pressurizing Agent, Nitrogen
the properties of materials, products, or assemblies in response
7
to heat and flame under controlled laboratory conditions and MIL-PRF-25508F Propellant, Oxygen
MIL-T-27602B Trichloroethylene, Oxygen Propellant Com-
should not be used to describe or appraise the fire hazard or
8
fire risk of materials, products, or assemblies under actual fire patible
MIL-C-81302D Cleaning Compound, Solvent, Trichlorotri-
conditions. However, results of this test may be used as
7
elements of a fire risk assessment which takes into account all fluorocarbon
of the factors which are pertinent to an assessment of the fire
2.3 ASTM Adjuncts:
hazard of a particular end use.
Type Impact Tester and Anvil Region Assembly, 38 Draw-
1.3 This standard does not purport to address all of the
ings
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3. Summary of Test Method
priate safety and health practices and determine the applica-
3.1 A sample of the test material is placed in a specimen
bility of regulatory limitations prior to use.
cup, precooled and covered with liquid oxygen, and placed in
1.4 This international standard was developed in accor-
the cup holder located in the anvil region assembly of the
dance with internationally recognized principles on standard-
impact tester. A precooled striker pin is then centered in the
ization established in the Decision on Principles for the
cup. The plummet is dropped from selected heights onto the
Development of International Standards, Guides and Recom-
pin, which transmits the energy to the test specimen. Observa-
mendations issued by the World Trade Organization Technical
tion for any reaction is made and the liquid oxygen impact
Barriers to Trade (TBT) Committee.
sensitivity of the test material is noted. Drop tests are continued
using a fresh specimen cup and striker pin for each drop, until
1
This test method is under the jurisdiction of ASTM Committee G04 on
Compatibility and Sensitivity of Materials in Oxygen Enriched Atmospheres and is
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the direct responsibility of Subcommittee G04.01 on Test Methods. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved July 1, 2017. Published July 2017. Originally approved contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
ε1
in 1966. Last previous edition approved in 2002 as D2512 – 95 (2002) which was Standards volume information, refer to the standard’s Document Summary page on
withdrawn January 2017 and reinstated in July 2017. DOI: 10.1520/D2512-17. the ASTM website.
2 6
NASA Handbook 8060. 1B, Ambient LOX Mechanical Impact Screening Test, The last approved version of this historical standard is referenced on
September 1981, pp. 4-53 through 4-71. “Oxygen Systems.” George C. Marshall www.astm.org.
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Space Flight Center, National Aeronautics and Space Administration. Specification Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
MSFC 106B. September 1981. Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
3
“Lubrication and Related Research and Test Method Development for Aviation dodssp.daps.dla.mil.
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Propulsion Systems.” Technical Report No. 59-726. Wright Air Development Cancelled in 1983. Previously available from Standardization Documents
Division, January 1960. Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA
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“General Safety Precautions for Missile Liquid Prope
...
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