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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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J3 12 [] —75 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. It is not the function of this specification to provide specific engineering data for design purposes. The following additional instructions and the precautions of Note 12 shall be observed: Work Item s – proposed revisions of this standard.

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

NOTE 17—It should be noted that the irradiation spectra from different sources including carbon arc, xenon arc, and UV? 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.

Committee D20 has identi? Additional characterization of the sample can be obtained if other conditions are used. These specimens are compression molded thermoplastic specimens. NOTE 12—If it is known or suspected that the material contains moisture, the d128 should be dried prior to being tested, but otherwise no conditioning is required.

Link to Active This link will always route to the current Active version of the standard. For information regarding plastic pipe materials, see Specification D NOTE 13—Test specimens, particularly those molded of compounds containing carbon black, should be tested immediately after conditioning and their storage under humid conditions should be avoided.

Irradiance at the control point shall be maintained at 0. However, because this test is lengthy, it need not be performed on every lot of material. For routine inspection, only those tests necessary to identify the material to the satisfaction of the purchaser shall be required. Last previous edition approved in as D – d128 However, the degradation rate of polyethylene has been found to be more dd1248 than in the irradiance controlled unit and may be as little as 1?

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D — 05 This specification provides for the identification of polyethylene plastics extrusion materials for wire and cable in such a manner that the seller and the purchaser can agree on the acceptability of different commercial lots or shipments. However, no information is available on the relation between exposure times and service life under use conditions for wire and cable.

For such materials, the milling procedure described in For information regarding molding and extrusion materials, see Specification D Give our test engineers a call today for help configuring the best test machine and accessories according to your standard.

Make duplicate determinations using two separate portions of the same molding or from two moldings. We are confident that we have what you are looking for. Contact your astj for additional information regarding this issue.

For information regarding molding and extrusion materials, see Specification D Renumbered all subsequent sections accordingly. NOTE 8—Tables 4 and 5, are included to correspond with the grades speci?

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

D12248 12 d248 —75 The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.

Specimens shall be either die cut or machined to the speci? E8 19 [] —75 48 96 E9 19 [] —75 48 96 E10 22 [] —75 48 0. A Samples shall be drawn from the required number of units, and pooled for preparation of molded samples for mechanical properties evaluation. The former is the criterion for assignment as to type, the latter for designation as to category.

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Other grades may be added as necessary by revision of this speci? Test specimens, 7 mm or under in thickness, shall be conditioned for a minimum of 40 h immediately prior to testing. Other attributes important for certain applications are covered by three general classes and by specifying in greater detail, by grades, a minimum number of key characteristics covered too broadly or not at all by the type, class, and category designations.

ASTM D refers to a number of ASTM mechanical testing standards to determine physical characteristics of polyethylene plastic extrusion wire and cable. Cuts test specimens from stock material Available for a wide variety of ISO and ASTM standards Consistent specimens for d11248 results Manufactured with tool steel to resist damage and wear over time.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Prepare the specimens in accordance with Test Methods D for physical tests of insulation and jackets. Sstm 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.

This is discussed in Practice D The tests involved in this specification are intended to provide information for identifying materials according to the types, classes, categories, and grades covered.

Each of five types and categories is subdivided into four classes according to composition and use as follows: The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.

D — 05 Standard Speci? No conditioning is required. Perform the tests in accordance with Practices DG and G using?