SAE J322 pdf download
SAE J322 pdf download.Nonmetallic Trim Materials-Test Method for Determining the Staining Resistance to Hydrogen Sulfide Gas.
1. This SAE Recommended Practice is designed to reveal discoloration which may occur when nonmetallic materials used for trimming automobiles are exposed for a limited time to an atmosphere containing hydrogen sulfide.
NOTE 1—CAUTION-Hydrogen sulfide gas is extremely hazardous. Use of this substance may be fatal if proper piecautions are not taken. This test method does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this document to establish appropnate safety and health practices and determine the applicability of regulatory limitations prior to use.
NOTE 2—A fume hood arid adequate ventilation should be provided at all times during testing.
2. References
2.1 Related Publications—The following publications are provided for information purposes only and are not a required part of this document.
2 1.1 AATCC PuicATIONS—Available from American Association of Textile Chemists 8 Colorists. 1 Davis Drive, P0. Box 12215, Research Triangle Park, NC 27709-2215, 919-549•8141, Fax 919-549-8933.
AATCC Evaluation Procedure 1 Gray Scale for Color Change
2.1.2 GLoBAL ENGINEERING DOCUMENTS—Available from Global Engineering, 15 Inverness Way East. Englewood CO 80112, Email:[email protected].
SO 1 05-A02—Textaes-Tests for Colour Fastness-Part A02: Grey Scale for Assessing Change in Colour
3. Materials and Equipment Required
3.1 Hydrogen sulfide cylinder with valve.
3.2 Two test tubes approximately 38 x 200 mm.
3.3 Two two-hole stoppers to fit the test tubes.
5.4 Remove pinch damp from exhaust hose of tube B and cautiously open the valve on the hydrogen sulfide cylinder. Adjust the valve so hydrogen sulfide gas bubbles through the system at a uniform and controlled rate, with a steady flow of bubbles at 5 bubbles/second,
5.5 Allow the system to purge for 1.5 imn, then close the valve and immediately replace the pinch damp on the exhaust hose of tube B.
5.6 Allow the system to remaan in the closed position for an additional 2 rein.
5.7 Remove the stopper of tube B and take out the test specimen,
5.8 Coniare the test specimen with an unexposed specimen of the same material and report any discoloration which has occurred using as a reference staining grey scale, (Grey Scale for Color Change. AATTC Evuation Procedure 1. similar to ISO 105•A02.)
6. Notes
6.1 MargInal lnddcla—The change bar (I) located in the left margin is for the convenience of the user in locating areas where technical revisions have been made to the previous Issue of the report. An (R) symbol to the left of the document title indicates a complete revision of the report.
