ASTM D6396-99(R2020) pdf free download

ASTM D6396-99(R2020) pdf free download.Standard Test Method for Testing of Pipe Thread Sealants on Pipe Tees
1. Scope
1.1 This test method covers procedures used to assemble, evaluate and test pipe thread sealants. 1.2 Test procedures included in this test method are cure speed versus temperature, primer cure, instant seal/sealability, heat aging, solvent resistance, hot strength, steam resistance, and specimen preparation for high pressure testing. 1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 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 appro- priate safety, health, and environmental practices and deter- mine the applicability ofregulatory limitations prior to use. 1.5 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
4. Summary of Test Method
4.1 Pipe tee and plug fittings, assembled with the sealant under test, are subjected to a variety of conditions and tested for sealability and removal torque, 1 ⁄ 2 in. cap, coupling and nipple assemblies are prepared with the sealant under test for high pressure testing (typically 10 000 psi).
5. Significance and Use
5.1 Many of the tests that have been employed in the past to evaluate thread sealant products have not consistently targeted the most significant product features of a thread sealant. For instance, one of a thread sealant’s primary performance fea- tures is its ability to maintain a seal under a range of conditions. The procedures in this test method assess the important characteristic properties of a thread sealant. 5.2 Because of the variability of the test specimens and the techniques employed by each operator, the assembly and test procedures and the testing apparatus have been designed to reduce the variability of the test results.
6. Apparatus
6.1 Torque Testing Device, of suitable capacity, for testing assemblies. N OTE 1—Using automated torque testers to test the assemblies gener- ally produces more reproducible results. 6.2 Torque Wrench, of suitable capacity, for providing installation torque. 6.3 Pipe Tee Assembly Block, 3 ⁄ 8 in. (10 mm), as shown in Fig. 1, or equivalent. 6.4 Pipe Tee Torque Test Block, 3 ⁄ 8 in. (10 mm), as shown in Fig. 2, or equivalent. N OTE 2—The pipe tee torque test block is designed to fit an automated torque tester, but it can also be used in a vise with a torque wrench. 6.5 Pipe Tee Sealability Test Clamp, as shown in Fig. 3. 6.6 Temperature Chamber. 6.7 Pressurized Pots, for solvent resistance and steam resis- tance testing.
8. Assembly
8.1 Assemble not less than three assemblies for each test. 8.2 Degrease all pipe tees and plugs. Allow specimens to cool to room temperature prior to sealant application. 8.3 Apply sealant as follows: 8.3.1 Apply sealant uniformly to the second through the sixth threads of the male fitting for each test joint. 8.3.2 Ensure that the average height of the sealant reaches the thread crown (major diameter), and that the sealant completely wets the thread roots. 8.3.3 Note any separation or visible defects with the prod- ucts. Also note any problems with wettability or excessive running due to low viscosity or a low thixotropy level. 8.4 Assemble test specimens as follows: 8.4.1 Using a torque wrench and the pipe tee assembly block fixture, install two sealant coated pipe plugs for each pipe tee. Install with the application of 240 in.–lb (27.1 N·m) of torque. 8.4.2 Remove excess sealant to avoid excess specimen weight loss that may be caused by charred sealant flaking off during initial heat exposure and in steam resistance tests.