ASTM D1248 PDF

Buy ASTM D SPECIFICATION FOR POLYETHYLENE PLASTICS EXTRUSION MATERIALS FOR WIRE AND CABLE from SAI. This standard is issued under the fixed designation D ; the 1 This specification is under the jurisdiction of ASTM Committee D20 on. ASTM D Standard Specification for Polyethylene Plastics Extrusion Materials for Wire and Cable.

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If necessary, level of contamination may be agreed upon between the seller and the purchaser.

ASTM D1248 Polyethylene Plastics Extrusion for Wire and Cable | Test Equipment

Committee D20 has identi? It is not the function of this speci? Renumbered all subsequent sections accordingly.

However, the non-irradiance control machine can still be used for relative weatherability comparison among different materials weathered at the same time.

G Dissipation factor and dielectric constant must not exceed the limits speci? Cuts test specimens from stock material Available for a wide variety of ISO and ASTM standards Consistent specimens for d1284 results Manufactured with tool steel to resist damage and wear over time. For information regarding plastic pipe materials, see Specification D Note 3—See Guide D and 3.

March 1, 1 Revised For information regarding molding and extrusion materials, see Speci? J4 19 [] —75 This standard does not purport to address all of the safety concerns, if any, associated with its use. Prepare the specimens in accordance with Test Methods D for physical tests of insulations and jackets. D128 12 [] —75 Perform the tests in accordance with Practices GGand D using the asfm exposure conditions: Link to Active This link will always route to the current Active version of the standard.

D — 05 This standard does not purport to address all of the safety concerns, if any, d248 with its use. Adequate statistical sampling prior to packaging shall be considered an acceptable alternative.

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It is not the function of this specification to provide specific engineering data for design purposes. Therefore, the effects of the exposures described in The initial distance between the bench marks or extensometer grips shall 6 be NOTE 4—It is recognized that some high-density polyethylene plastics of very high molecular weight may have densities slightly less than 0.

Contact your supplier for additional information regarding this issue. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

A superscript epsilon e indicates an editorial change since the last revision or reapproval. E7 17 [] — Bench marks or a high range extensometer shall be used for the determination of elongation at break. F Dielectric constant is a function of density; hence, the nominal value will be different for each type. Work Item s – proposed revisions of awtm standard.

The exposure cycle consists of a light asstm of 10 h with 18 minutes water spray on the front surface during each 2 h period followed by a dark period of 2 h with continuous water spray on awtm back surface.

NOTE 15—Longer periods of exposure will be required for older xenon-arc machines operated at irradiance of 0. The extrusion materials for wire and cable shall be as uniform in composition and size and as free of contamination as can be achieved by good manufacturing practice.

Make duplicate determinations from a sample of the material in the form of powder, granules, or pellets. Deleted the existing paragraphs Sampling for inspection and testing shall be carried out in accordance with the recommendations of Practice D NOTE 17—It should be noted that the irradiation spectra from different sources including carbon arc, xenon arc, and UV? However, the degradation rate of polyethylene has been found to be more variable than in the irradiance controlled unit and may be as little as 1?

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ASTM D Polyethylene Plastics Extrusion for Wire and Cable | Test Equipment

Changed the title of paragraph By means of our testing expertise and modular product design, we will help find the solution that is right for you. Renumbered existing Xstm 11 to Section The melt viscosity of polyethylene plastics, in common with that of most high polymers, is non-Newtonian, that is, dependent on the rate of shear. After being milled as prescribed, the material shall meet the dielectric requirements prescribed in Table 3.

The tests involved in this specification are intended to provide information for identifying materials according to the 1d248, classes, categories, and grades covered.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. For information regarding plastic pipe materials, see Specification D The tests involved in this speci?

Based on published information, the nominal values for the? Its purpose is to establish that a suitable antioxidant is present in adequate quantity. The following additional instructions and the precautions of Note 12 shall be observed: Category 1,Category 2, Category 3,Category 4, and Category 5.

The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard. NOTE 8—Tables 4 and 5, are included to correspond with the grades speci? Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.