ASTM D1710 PDF

A number in parentheses indicates the year of last reapproval. This standard has been approved for use by agencies of the U. Department of Defense. These materials must be made wholly from PTFE andproduced in accordance with good commercial ram extrusionpractices.

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A number in parentheses indicates the year of last reapproval. This standard has been approved for use by agencies of the U. Department of Defense. These materials must be made wholly from PTFE andproduced in accordance with good commercial ram extrusionpractices.

Material that can be certified to Specification D may besubstituted for Specification D, however the reverse in not true. The inch-pound unitsgiven in parentheses are provided for information only.

It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.

Referenced Documents2. Current edition approved Sept. Published September Originallyapproved in Last previous edition approved in as D - United States PTFE is the acronym for polytetrafluo-roethylene.

They are as follows A comma is used as the separatorbetween the standard number and the type. Separators are notneeded between the type, grade, and class. A provision forspecial notes is included so that other information can beprovided when required. An example would be to specify thedimension tolerances for each size of rod, heavy-walled tubing,or basic shape. When special notes are used, they shall bepreceded by a comma.

Materials and Manufacture5. General Requirements6. The heavy-walled tubing covered by thisspecification shall meet the mechanical and electrical require-ments in Table 2 when tested by the methods given in Section Dimensions, Mass, and Permissible Variations7.

Tolerances forsizes of rod ARod Diameter, in. Diameter 0. A1 in. BThis requirement applies only to rod of Classes B and D that is under Values for larger sizes shall be as agreed upon by manufacture andbuyer or manufacture stating material was stress relieved after manufacture of extruded rod. Workmanship, Finish, and Appearance8. The examination for internal defects shall be made in accor-dance with Guide E Number of Tests and Retests When the number oftest specimens is not stated in the test method, single determi-nation shall be made.

If more than single determinations onseparate portions of the same sample are made, the results shallbe averaged. The single or average result shall conform to therequirements prescribed in this specification.

Test Conditions Since the rodor heavy-walled tubing does not absorb water, the maintenanceof constant humidity during testing is not important. Test Methods Two drops of wetting agent shall be addedto the water in order to reduce the surface tension and ensurecomplete wetting of the specimens. Test two specimens repre-sentative of the cross section of the rod or heavy-walled tubingand average the results. Tolerance,Bmm in. BThe tolerance is plus for outside diameters and minus for inside diameters.

Prepare the micro tensile specimens from1. Slit this sleeve using a utility knife cutparallel to direction of extrusion to open up and lay flat thistubing. Using steel rule diameter as described in SpecificationD stamp samples around perimeter of the tubing. Sample thickness shall be 1 6 0. Test five specimens in oil and averageresults.

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More D Covered here are three types of PTFE fluorocarbon materials as follows: Type I premium , materials having maximum physical and electrical properties to meet rigid requirements; Type II general purpose , materials having properties required of general electrical, mechanical, and chemical applications; and Type III, materials for noncritical chemical, electrical, and mechanical applications. These types are further subdivided into two grades, and even further into four classes as appropriate. Sampled specimens shall be appropriately tested on the following: workmanship and appearance color, finish, and internal defects ; specific gravity; tensile strength and elongation; dielectric strength; dimensional stability; and melting point. This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.

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