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ASTM D5948-05e1

Current Revision

Standard Specification for Molding Compounds, Thermosetting

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1.1 This specification covers the basic properties of thermoset molding compounds and the test methods used to establish the properties.

1.2 ClassificationMolding thermosetting plastic compounds shall be of the following resins and are covered by the individual specification sheets (see 5.1 and Annex A1-Annex A8).

ResinPhenolic, cellulose filledPhenolic, mineral/glass filledMelaminePolyesterDiallyl iso-phthalateDiallyl ortho-phthalateSiliconeEpoxy

Note 1—There is no equivalent ISO standard.

1.3 Order of PrecedenceIn the event of a conflict between the text of this specification and the references cited in Section (except for related specification sheets), the text of this specification takes precedence. Nothing in this specification, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

1.4 The values stated in SI units are to be considered standard.


This specification covers the basic properties of thermoset molding plastic compounds and the test methods used to establish the properties. The plastic compounds shall be a resin, cellulose-filled or mineral/glass-filled phenolic, melamine, polyester, diallyl iso-phthalate, diallyl ortho-phthalate, silicone, or epoxy. Standard test specimens shall be in the as-received condition or shall be conditioned before testing by humidity, immersion, or temperature conditioning. The specimens shall undergo mechanical or physical qualification tests which shall conform to the following properties: compressive strength; dimensional stability; flexural strength; heat deflection temperature; heat resistance; impact strength; tensile strength; and water absorption. Electrical qualification tests shall be conducted; wherein, the specimens shall comply with the following requirements: arc resistance; dielectric breakdown; dielectric constant; dielectric strength; dissipation factor; surface resistance; comparative track index; volume resistance; and water extract conductance. Tests for combustion qualification shall also be performed to determine the flame resistance ignition time, burning time, flammability, and toxicity requirements. Batch acceptance tests shall be conducted as well to ensure the quality conformance of the specimens.


SDO ASTM: ASTM International
Document Number D5948
Publication Date March 1, 2005
Language en - English
Page Count 18
Revision Level 05e1
Supercedes
Committee D20.16
Publish Date Document Id Type View
March 1, 2005 D5948-05E01 Revision
March 1, 2005 D5948-05 Revision
Dec. 1, 2020 D5948-05R20 Reaffirmation
Oct. 1, 2012 D5948-05R12 Reaffirmation
Nov. 10, 2002 D5948-96R02E01 Reaffirmation