ASTM D2647-94

Standard Specification for Crosslinkable Ethylene Plastics

SCOPE
1.1 This specification covers a general classification system for crosslinkable ethylene plastics compounds (Note 1). The requirements specified herein are not necessarily applicable for use as criteria in determining suitability for the end use of a fabricated product.
Note 1--It is to be noted that this specification describes materials that are available commercially in their uncrosslinked form. Therefore, they are crosslinkable compounds despite the fact that measurement of the parameters used for their classification and specification will usually be carried out after curing has been effected.
1.2 Two types of compounds are covered, namely, mechanical types in which mechanical strength properties are of prime importance in applications, and electrical types in which electrical insulating or conducting properties also are of prime importance in applications.
1.3 The parameters used to classify and specify the mechanical types are ultimate elongation, elongation retention after aging, apparent modulus of rigidity, and brittleness temperature.
1.4 The parameters used to classify and specify the electrical types are ultimate elongation, elongation retention after aging, apparent modulus of rigidity, brittleness temperature, dielectric constant, dissipation factor, and volume resistivity.
1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.6 The following safety hazards caveat pertains only to the test methods portion, Section 7, of this specification: 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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Note 2--There is no similiar or equivalent ISO standard.

General Information

• Status: Historical
• Publication Date: 31-Dec-1999
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.15 - Thermoplastic Materials

Relations

• Replaced By: ASTM D2647-94(2000)e1 - Standard Specification for Crosslinkable Ethylene Plastics
• Effective Date: 01-Jan-2000
• Referred By: ASTM D3004-08(2020) - Standard Specification for Crosslinked and Thermoplastic Extruded Semi-Conducting, Conductor, and Insulation Shielding Materials
• Effective Date: 01-Jan-2000

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 2647 – 94 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Crosslinkable Ethylene Plastics
This standard is issued under the fixed designation D 2647; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope Permittivity (Dielectric Constant) of Solid Electrical Insu-
lating Materials
1.1 This specification covers a general classification system
D 257 Test Methods for D-C Resistance or Conductance of
for crosslinkable ethylene plastics compounds (Note 1). The
Insulating Materials
requirements specified herein are not necessarily applicable for
D 573 Test Method for Rubber—Deterioration in an Air
use as criteria in determining suitability for the end use of a
Oven
fabricated product.
D 618 Practice for Conditioning Plastics and Electrical
NOTE 1—It is to be noted that this specification describes materials that 4
Insulating Materials for Testing
are available commercially in their uncrosslinked form. Therefore, they
D 638 Test Method for Tensile Properties of Plastics
are crosslinkable compounds despite the fact that measurement of the
D 746 Test Method for Brittleness Temperature of Plastics
parameters used for their classification and specification will usually be
and Elastomers by Impact
carried out after curing has been effected.
D 883 Terminology Relating to Plastics
1.2 Two types of compounds are covered, namely, mechani-
D 991 Test Method for Rubber Property—Volume Resistiv-
cal types in which mechanical strength properties are of prime
ity of Electrically Conductive and Antistatic Products
importance in applications, and electrical types in which
D 1043 Test Method for Stiffness Properties of Plastics as a
electrical insulating or conducting properties also are of prime
Function of Temperature by Means of a Torsion Test
importance in applications.
D 1898 Practice for Sampling of Plastics
1.3 The parameters used to classify and specify the me-
D 2765 Test Methods for Determination of Gel Content and
chanical types are ultimate elongation, elongation retention
Swell Ratio of Crosslinked Ethylene Plastics
after aging, apparent modulus of rigidity, and brittleness
D 3892 Practice for Packaging/Packing of Plastics
temperature.
E 380 Practice for the Use of the International System of
1.4 The parameters used to classify and specify the electri-
Units (SI) (The Modernized Metric System)
cal types are ultimate elongation, elongation retention after
2.2 Military Standard:
aging, apparent modulus of rigidity, brittleness temperature,
MIL-STD-105 Sampling Procedures and Tables for Inspec-
dielectric constant, dissipation factor, and volume resistivity.
tion by Attributes
1.5 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
3. Terminology
only.
3.1 Definitions: For definitions of plastics terms used in this
1.6 The following safety hazards caveat pertains only to the
specification, see Terminology D 883.
test methods portion, Section 7, of this specification: This
3.2 Units, Symbols, and Abbreviations—For units, symbols,
standard does not purport to address all of the safety concerns,
and abbreviations used in this specification see Practice E 380.
if any, associated with its use. It is the responsibility of the user
of this standard to establish appropriate safety and health
4. Classification
practices and determine the applicability of regulatory limita-
4.1 Classification System—Table 1 and Table 2 provide a
tions prior to use.
classification system for these compounds so that the relations
NOTE 2—There is no similiar or equivalent ISO standard. among them may be delineated and those that are commer-
cially available may be specified readily. It is not the intent to
2. Referenced Documents
indicate that all the combinations of properties possible are
2.1 ASTM Standards:
represented by commercial products or that they are technically
D 150 Test Methods for A-C Loss Characteristics and
Annual Book of ASTM Standards, Vol 10.01.
Annual Book of ASTM Standards, Vol 09.01.
Annual Book of ASTM Standards, Vol 08.01.
1 5
This specification is under the jurisdiction of ASTM Committee D-20 on Annual Book of ASTM Standards, Vol 08.02.
Plastics and is the direct responsibility of Subcommittee D20.12 on Olefin Plastics. Annual Book of ASTM Standards, Vol 14.02.
Current edition approved Feb. 15, 1994. Published April 1994. Originally Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
e1
published as D 2647 – 67 T. Last previous edition D 2647 – 80 (1987) . Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
D 2647
TABLE 1 Type I, Mechanical Compound Requirements
Cell Limits
Designation
Property
Order No.
01 2 3 4 5
1 Ultimate elongation, % unspecified <25 25 to 150 151 to 250 251 to 450 >450
2 Minimum of 75 % retention of unspecified 121 (250) 150 (302)
elongation after aging at the
specified temperature for 168 h,
°C (°F)
3 Apparent modulus of rigidity, unspecified <70 70 to 275 >275
MPa (psi) (10 000) (10 000 to 40 000) (40 000)
4 Brittleness temperature, °C (°F) unspecified <−75 −54 (−65) to −40 (−40) to −29 (−20)
(−103) −75 (−103) −53 (−63) to
−39 (−38)
5 Percent extract (measure of unspecified <10 <20 <30 $30
degree of cross-linking)
TABLE 2 Type II, Electrical Compound Requirements
Designation Cell Limits
Property
Order No.
0 123 4 5
1 Ultimate elongation, % unspecified <25 25 to 150 151 to 250 251 to 450 >450
2 Minimum of 75 % retention of unspecified 121 (250) 150 (302)
elongation after aging at the
specified temperature for 168
h, °C (°F)
3 Apparent modulus of rigidity, unspecified <70 70 to 275 >275
MPa (psi) (10 000) (10 000 to (40 000)
40 000)
4 Brittleness temperature,° C (°F) unspecified <−75 (−103) −54 (−65) to −40 (−40) to −29 (−20) to
−75 (−103) −53 (−63) −39 (−38)
5 Percent extract (measure of unspecified <10 <20 <30 $30
degree of cross-linking)
6 Dielectric constant unspecified 2.50 max 3.50 max 6.00 max 8.00 max >8.00
7 Di
...