American National Standards Institute eStandards Store Home page Shopping Cart Alert me My account Download Frequently asked questions Terms Of Use Help
ANSI Standards Store ANSI Standards Store
AAMI - Medical Device Standards SIA - Scaffold Standards NEMA - Electrical Standards BSI - British Standards Institution ASTM International Standards DIN - German Institute for Standardization ISO Environmental Management Standards
Browse Standards

Browse ISO Standards
Browse IEC Standards

View all publishers

 

View All Standards Packages

Bookmark and Share
 
ANSI Blog    Follow ANSI on Twitter    Follow ANSI on Youtube
Follow ANSI on LinkedIn    Follow ANSI on Google Plus    Follow ANSI on Facebook
Get Adobe Acrobat Reader
Get File Open Plug-In


ASTM D1149-07(2012)

     

Standard Test Methods for Rubber Deterioration—Cracking in an Ozone Controlled Environment

1.1 These test methods are used to estimate the effect of exposure, under surface tensile strain conditions, either dynamic or static, in an atmosphere containing specified levels of ozone concentration, expressed as partial pressure (refer to Note 1), on vulcanized rubber, rubber compounds, molded or extruded soft rubber, and other specified materials, or as may be determined empirically. The effect of naturally occurring sunlight or light from artificial sources is excluded.

1.2 Previously published ASTM documents Test Method D518 and Test Methods D3395 have been included in these test methods, D1149, in 2007. Please refer to Note 2.

1.2.1 Test Method D518 and Test Methods D3395 have henceforth been withdrawn and superseded by Test Methods D1149. When Test Methods D1149 is cited, or otherwise referenced, a notation shall be included to this effect. Please refer to section 3.2 for the appropriate references.

1.3 The specified conditions of exposure to ozone in the controlled environments are accelerated in comparison to outdoor exposure. These accelerated ozone test methods may not give results which correlate with outdoor exposure tests or service performance.

1.4 All materials, instruments, or equipment used for the determination of mass, force, dimension, ozone concentration, partial pressure, temperature, velocity, and gas exchange rate shall have direct traceability to the National Institute for Standards and Technology, or other internationally recognized organization parallel in nature.

1.5 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. Many of the stated SI units are direct conversions from the U.S. Customary System to accommodate the instrumentation, practices, and procedures that existed prior to the Metric Conversion Act of 1975.

1.6 This standard involves hazardous materials, specifically ozone. It may also involve hazardous operations and equipment. 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.

Note 1—A discussion and explanation regarding the measurement of ozone concentrations based upon parts of ozone per unit of air versus partial pressure is provided in Test Methods D4575, specifically Appendices X1 and X2. Test Methods D4575 is also recommended as a source of background information regarding standards involving materials exposed to ozone.

#
Price: $48.00
 
Learn more about Site Licenses


Would you like to Email to a friend? If you would like to Email a friend a link to this item please Login Questions?

  Find
 
GlobalSpec - The Engineering Search Engine

 

ANSI Copyright
eStandards Store home page Cart Alert Account Download Frequently Asked Questions Privacy Policy Contact Us Help