ASTM G114-06
(Practice)Standard Practices for Evaluating the Age Resistance of Polymeric Materials Used in Oxygen Service
Standard Practices for Evaluating the Age Resistance of Polymeric Materials Used in Oxygen Service
SCOPE
1.1 These practices describe several procedures that are used to determine the age resistance of plastic, thermosetting, and elastomeric materials exposed to oxygen-containing media.
1.2 These practices address both established methods that have a foundation of experience and potential methods that have yet to be validated. The latter are included to promote research and later elaboration in this practice as methods of the former type.
1.3 The results of these practices may not give exact correlation with service performance since service conditions vary widely and may involve multiple factors. This practice may be used to evaluate materials on a laboratory comparison basis.
1.4 Three procedures are described for evaluating the age resistance of polymeric materials depending on application and information sought.
1.4.1 Procedure A: Natural AgingThis procedure is used to simulate the effect(s) of one or more service stressors on a materials oxygen resistance, and is suitable for evaluating materials that experience continuous or intermittent exposure to elevated temperature during service.
1.4.2 Procedure B: Accelerated Aging Comparative Oxygen ResistanceThis procedure is suitable for evaluating materials that are used in ambient temperature service, or at a temperature that is otherwise lower than the aging temperature, and is useful for developing oxygen compatibility rankings on a laboratory comparison basis.
1.4.3 Procedure C: Accelerated Aging Lifetime PredictionThis procedure is used to determine the relationship between aging temperature and predefined level property change, thereby allowing predictions to be made about the effect of prolonged service on oxidative degradation.
1.5 The values stated in SI units are to be regarded as the standard, however, all numerical values must also be cited in the systems in which they were actually measured.
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. Specific precautionary statements are given in Section 10.
General Information
Relations
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:G114–06
Standard Practices for
Evaluating the Age Resistance of Polymeric Materials Used
1
in Oxygen Service
This standard is issued under the fixed designation G 114; 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 1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 These practices describe several procedures that are
responsibility of the user of this standard to establish appro-
used to determine the age resistance of plastic, thermosetting,
priate safety and health practices and determine the applica-
and elastomeric materials exposed to oxygen-containing me-
bility of regulatory limitations prior to use. Specific precau-
dia.
tionary statements are given in Section 10.
1.2 These practices address both established methods that
have a foundation of experience and potential methods that
2. Referenced Documents
have yet to be validated. The latter are included to promote
2
2.1 ASTM Standards:
research and later elaboration in this practice as methods of the
D 395 Test Methods for Rubber Property—Compression
former type.
Set
1.3 The results of these practices may not give exact
D 412 Test Methods for Vulcanized Rubber and Thermo-
correlation with service performance since service conditions
plastic Elastomers—Tension
vary widely and may involve multiple factors. This practice
D 573 Test Method for Rubber—Deterioration in an Air
may be used to evaluate materials on a laboratory comparison
Oven
basis.
D 638 Test Method for Tensile Properties of Plastics
1.4 Three procedures are described for evaluating the age
D 1349 Practice for Rubber—Standard Temperatures for
resistanceofpolymericmaterialsdependingonapplicationand
Testing
information sought.
D 1708 Test Method for Tensile Properties of Plastics by
1.4.1 Procedure A: Natural Aging—This procedure is used
Use of Microtensile Specimens
to simulate the effect(s) of one or more service stressors on a
D 2240 Test Method for Rubber Property—Durometer
material’s oxygen resistance, and is suitable for evaluating
Hardness
materials that experience continuous or intermittent exposure
D 2512 Test Method for Compatibility of Materials with
to elevated temperature during service.
Liquid Oxygen (Impact Sensitivity Threshold and Pass-
1.4.2 Procedure B: Accelerated Aging Comparative Oxygen
Fail Techniques)
Resistance—Thisprocedureissuitableforevaluatingmaterials
D 3045 Practice for Heat Aging of Plastics Without Load
that are used in ambient temperature service, or at a tempera-
D 4809 Test Method for Heat of Combustion of Liquid
ture that is otherwise lower than the aging temperature, and is
Hydrocarbon Fuels by Bomb Calorimeter (Precision
useful for developing oxygen compatibility rankings on a
Method)
laboratory comparison basis.
D 5510 Practice for Heat Aging of Oxidatively Degradable
1.4.3 Procedure C: Accelerated Aging Lifetime
Plastics
Prediction—This procedure is used to determine the relation-
G63 Guide for Evaluating Nonmetallic Materials for Oxy-
ship between aging temperature and predefined level property
gen Service
change, thereby allowing predictions to be made about the
G72 Test Method for Autogenous Ignition Temperature of
effect of prolonged service on oxidative degradation.
Liquids and Solids in a High-Pressure Oxygen-Enriched
1.5 The values stated in SI units are to be regarded as the
Environment
standard, however, all numerical values must also be cited in
G74 Test Method for Ignition Sensitivity of Materials to
the systems in which they were actually measured.
Gaseous Fluid Impact
1
These practices are under the jurisdiction of ASTM Committee G04 on
2
Compatibility and Sensitivity of Materials in Oxygen EnrichedAtmospheres and is For referenced ASTM standards, visit the ASTM website, www.astm.org, or
the direct responsibility of Subcommittee G04.02 on Recommended Practices. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved June 15, 2006. Published August 2006. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 1993. Last previous edition approved in 1998 as G 114 – 98. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
G114–06
G86 Test Method for Determining Ignition Sensitivity of 3.1.8 natural aging—aging that occurs during normal ser-
Materials to Mechanical Impact in Ambient Liquid Oxy- vice which is a function
...








Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.