ASTM B869-07(2018)
(Specification)Standard Specification for Copper-Clad Steel Electrical Conductor for CATV Drop Wire
Standard Specification for Copper-Clad Steel Electrical Conductor for CATV Drop Wire
ABSTRACT
This specification covers hard-drawn round copper-clad steel electrical conductor for CATV drop wire (coaxial cable center conductor). The wire shall be composed of a steel core with a substantially uniform and continuous copper cladding thoroughly bonded to it throughout. The size shall be expressed as the diameter of the wire. The steel wire shall conform to the prescribed tensile strength, elongation, and breaking strength. Requirements for (1) tension and torsion tests, (2) method of determining the electrical resistance, (3) cladding uniformity in terms of thickness, and (4) joint construction are detailed. The prescribed density of the wire to be taken for calculating mass/unit length, cross section, and so forth is given.
SCOPE
1.1 This specification covers 21 % conductivity hard-drawn round copper-clad steel wire for coaxial cable center conductors (Note 1).
Note 1: Wire ordered to this specification is not intended for redrawing since it is furnished in the hard-drawn temper. If wire is desired for the purpose, the manufacturer should be consulted.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Buy Standard
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:B869 −07 (Reapproved 2018)
Standard Specification for
Copper-Clad Steel Electrical Conductor for CATV Drop Wire
This standard is issued under the fixed designation B869; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Ordering Information
1.1 This specification covers 21 % conductivity hard-drawn 3.1 Orders for material under this specification shall include
round copper-clad steel wire for coaxial cable center conduc- the following information:
3.1.1 Quantity of each size;
tors (Note 1).
3.1.2 Wire size: diameter in inches (see 5.1 and Table 1);
NOTE 1—Wire ordered to this specification is not intended for redraw-
3.1.3 Package size (see 15.1);
ing since it is furnished in the hard-drawn temper. If wire is desired for the
3.1.4 Specialpackagemarking,ifrequired(Section15);and
purpose, the manufacturer should be consulted.
3.1.5 Place of inspection (13.2).
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
4. Material
conversions to SI units that are provided for information only
4.1 The wire shall be composed of a steel core with a
and are not considered standard.
substantially uniform and continuous copper cladding thor-
1.3 This international standard was developed in accor-
oughly bonded to it throughout.
dance with internationally recognized principles on standard-
4.2 The finished copper-clad steel wire shall conform to the
ization established in the Decision on Principles for the
requirements in this specification.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5. Dimensions and Permissible Variations
Barriers to Trade (TBT) Committee.
5.1 The size shall be expressed as the diameter of the wire
2. Referenced Documents
in decimal fractions of an inch, using four places of decimals,
that is, in tenths of a mil (Note 2).
2.1 The following documents, of the issue in effect on the
date of material purchase, form a part of this specification to
NOTE 2—The values of wire diameters in Table 1 and Table 2 are given
the extent referenced herein.
tothenearest0.0001in.(0.0025mm)andcorrespondtothestandardsizes
given in Specification B258. In specifying diameters of wire or inspecting
2.2 ASTM Standards:
wire, the diameter should also be expressed to the fourth decimal place.
B193 Test Method for Resistivity of Electrical Conductor
An excellent discussion of wire gages and related subjects is contained in
Materials NBS Handbook 100.
B258 Specification for Standard Nominal Diameters and
5.2 Within the range of diameters included in Table 1, the
Cross-Sectional Areas of AWG Sizes of Solid Round
wire shall not vary from the specified diameter by more than
Wires Used as Electrical Conductors
61 %, expressed to the nearest 0.0001 in. (0.0025 mm).
2.3 NIST Document:
5.3 Ten percent, but not less than five reels (or all, if the lot
NBS Handbook 100 —Copper Wire Tables
is less than five), from any lot of wire shall be gaged.All reels
shall be gaged if any of the selected reels fail to conform to the
requirements for diameter.
This specification is under the jurisdiction of ASTM Committee B01 on
Electrical Conductors and is the direct responsibility of Subcommittee B01.06 on
6. Workmanship, Finish, and Appearance
Bi-Metallic Conductors.
6.1 The surface of the wire shall be free from imperfections
Current edition approved Oct. 1, 2018. Published October 2018. Originally
approved in 1996. Last previous edition approved in 2013 as B869 – 07 (2013).
and be consistent with good commercial practice.
DOI: 10.1520/B0869-07R18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7. Tensile and Elongation Properties
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
7.1 The wire shall conform to a minimum tensile require-
the ASTM website.
ment of 120 000 psi (827 MPa) and a minimum elongation
Available from National Institute of Standards and Technology (NIST), 100
Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov. requirement of 1.0 %.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B869−07 (2018)
TABLE 1 Properties of Hard-Drawn 21% Conductivity Copper-
8. Torsion Test
Clad Steel Wire
8.1 The wire shall withstand, without fracture, not less than
Nominal Maximum
Permissible Minimum Copper
20 torsions in a length equivalent to 100 times the nominal
Diameter, Resistance /1000 ft
A A
Variations Thickness, in.
A
in. at 20°C
diameter of the specimen. In the twist test, the rate of applying
0.0641 ±0.0006 in. 12.249 0.00096 the twists shall be approximately 15/min.
0.0571 ±0.0006 in. 15.472 0.00086
8.2 Specimens shall be twisted to destruction and shall not
0.0508 ±0.0005 in. 19.521 0.00076
0.0453 ±0.0005 in. 24.608 0.00068
reveal under testing any seams, pits, slivers, or surface imper-
0.0403 ±0.0004 in. 31.024 0.00060
fections of sufficient magnitude to indicate inherent defects or
0.0320 ±0.0003 in. 49.150 0.00048
imperfections in the wire.
0.0285 ±0.0003 in. 62.107 0.00043
A
8.2.1 Examination of the wire at the break shall show no
Metric equivalents: 1 in. = 25.4 mm.
separation of copper from the steel.
9. Resistance
TABLE 2 Approximate Properties (Information Only)
9.1 The electrical resistance of the wire (Note 4) shall be
Rated
Area
Nominal
Breaking Mass Mass
determined by resistance measurements, and maximum resis-
Diameter,
Strength, (lb/1000 ft) (lb/mile)
A
2A
in. tance shall be based on the minimum diameter of the wire and
cmil in.
min, lb
resistivity value at 20°C Ω cmil/ft of 49.39. This is to
0.0641 4108 0.003227 387 11.10 58.60
correspond to a minimum conductivity of 21 % IACS.
0.0571 3260 0.002560 307 9.05 47.78
0.0508 2580 0.002026 243 6.99 36.90
NOTE 4—Electrical resistance is calculated by the following equation:
0.0453 2052 0.001611 193 5.56 29.36
0.0403 1624 0.001276 153 4.51 23.81
resistivity,Ω 3circular mil/ft
0.0320 1024
...
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B869 − 07 (Reapproved 2018)
Standard Specification for
Copper-Clad Steel Electrical Conductor for CATV Drop Wire
This standard is issued under the fixed designation B869; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Ordering Information
3.1 Orders for material under this specification shall include
1.1 This specification covers 21 % conductivity hard-drawn
the following information:
round copper-clad steel wire for coaxial cable center conduc-
tors (Note 1). 3.1.1 Quantity of each size;
3.1.2 Wire size: diameter in inches (see 5.1 and Table 1);
NOTE 1—Wire ordered to this specification is not intended for redraw-
3.1.3 Package size (see 15.1);
ing since it is furnished in the hard-drawn temper. If wire is desired for the
3.1.4 Special package marking, if required (Section 15); and
purpose, the manufacturer should be consulted.
3.1.5 Place of inspection (13.2).
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
4. Material
conversions to SI units that are provided for information only
4.1 The wire shall be composed of a steel core with a
and are not considered standard.
substantially uniform and continuous copper cladding thor-
1.3 This international standard was developed in accor-
oughly bonded to it throughout.
dance with internationally recognized principles on standard-
4.2 The finished copper-clad steel wire shall conform to the
ization established in the Decision on Principles for the
requirements in this specification.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5. Dimensions and Permissible Variations
Barriers to Trade (TBT) Committee.
5.1 The size shall be expressed as the diameter of the wire
2. Referenced Documents
in decimal fractions of an inch, using four places of decimals,
that is, in tenths of a mil (Note 2).
2.1 The following documents, of the issue in effect on the
date of material purchase, form a part of this specification to
NOTE 2—The values of wire diameters in Table 1 and Table 2 are given
the extent referenced herein.
to the nearest 0.0001 in. (0.0025 mm) and correspond to the standard sizes
given in Specification B258. In specifying diameters of wire or inspecting
2.2 ASTM Standards:
wire, the diameter should also be expressed to the fourth decimal place.
B193 Test Method for Resistivity of Electrical Conductor
An excellent discussion of wire gages and related subjects is contained in
Materials NBS Handbook 100.
B258 Specification for Standard Nominal Diameters and
5.2 Within the range of diameters included in Table 1, the
Cross-Sectional Areas of AWG Sizes of Solid Round
wire shall not vary from the specified diameter by more than
Wires Used as Electrical Conductors
61 %, expressed to the nearest 0.0001 in. (0.0025 mm).
2.3 NIST Document:
5.3 Ten percent, but not less than five reels (or all, if the lot
NBS Handbook 100 —Copper Wire Tables
is less than five), from any lot of wire shall be gaged. All reels
shall be gaged if any of the selected reels fail to conform to the
requirements for diameter.
This specification is under the jurisdiction of ASTM Committee B01 on
Electrical Conductors and is the direct responsibility of Subcommittee B01.06 on
6. Workmanship, Finish, and Appearance
Bi-Metallic Conductors.
6.1 The surface of the wire shall be free from imperfections
Current edition approved Oct. 1, 2018. Published October 2018. Originally
approved in 1996. Last previous edition approved in 2013 as B869 – 07 (2013).
and be consistent with good commercial practice.
DOI: 10.1520/B0869-07R18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7. Tensile and Elongation Properties
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
7.1 The wire shall conform to a minimum tensile require-
the ASTM website.
3 ment of 120 000 psi (827 MPa) and a minimum elongation
Available from National Institute of Standards and Technology (NIST), 100
Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov. requirement of 1.0 %.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B869 − 07 (2018)
TABLE 1 Properties of Hard-Drawn 21 % Conductivity Copper-
8. Torsion Test
Clad Steel Wire
8.1 The wire shall withstand, without fracture, not less than
Nominal Maximum
Permissible Minimum Copper
20 torsions in a length equivalent to 100 times the nominal
Diameter, Resistance /1000 ft
A A
Variations Thickness, in.
A
in. at 20°C diameter of the specimen. In the twist test, the rate of applying
0.0641 ±0.0006 in. 12.249 0.00096
the twists shall be approximately 15/min.
0.0571 ±0.0006 in. 15.472 0.00086
8.2 Specimens shall be twisted to destruction and shall not
0.0508 ±0.0005 in. 19.521 0.00076
0.0453 ±0.0005 in. 24.608 0.00068
reveal under testing any seams, pits, slivers, or surface imper-
0.0403 ±0.0004 in. 31.024 0.00060
fections of sufficient magnitude to indicate inherent defects or
0.0320 ±0.0003 in. 49.150 0.00048
imperfections in the wire.
0.0285 ±0.0003 in. 62.107 0.00043
A 8.2.1 Examination of the wire at the break shall show no
Metric equivalents: 1 in. = 25.4 mm.
separation of copper from the steel.
9. Resistance
TABLE 2 Approximate Properties (Information Only)
9.1 The electrical resistance of the wire (Note 4) shall be
Rated
Nominal Area
Breaking Mass Mass
determined by resistance measurements, and maximum resis-
Diameter,
Strength, (lb/1000 ft) (lb/mile)
A
2A
in.
cmil in. tance shall be based on the minimum diameter of the wire and
min, lb
resistivity value at 20°C Ω cmil/ft of 49.39. This is to
0.0641 4108 0.003227 387 11.10 58.60
correspond to a minimum conductivity of 21 % IACS.
0.0571 3260 0.002560 307 9.05 47.78
0.0508 2580 0.002026 243 6.99 36.90
NOTE 4—Electrical resistance is calculated by the following equation:
0.0453 2052 0.001611 193 5.56 29.36
0.0403 1624 0.001276 153 4.51 23.81
resistivity, Ω 3 circular mil/ft
0.0320 1024 0.000804 96 2.77 14.65
maximum resistance Ω/ft 5
~ !
0.0285 812 0.000637 75 2.25 11.88
minimum
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B869 − 07 (Reapproved 2013) B869 − 07 (Reapproved 2018)
Standard Specification for
Copper-Clad Steel Electrical Conductor for CATV Drop Wire
This standard is issued under the fixed designation B869; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers 21 % conductivity hard-drawn round copper-clad steel wire for coaxial cable center conductors
(Note 1).
NOTE 1—Wire ordered to this specification is not intended for redrawing since it is furnished in the hard-drawn temper. If wire is desired for the
purpose, the manufacturer should be consulted.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 The following documents, of the issue in effect on the date of material purchase, form a part of this specification to the extent
referenced herein.
2.2 ASTM Standards:
B193 Test Method for Resistivity of Electrical Conductor Materials
B258 Specification for Standard Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as
Electrical Conductors
2.3 NIST Document:
NBS Handbook 100 Handbook 100—Copper —Copper Wire Tables
3. Ordering Information
3.1 Orders for material under this specification shall include the following information:
3.1.1 Quantity of each size;
3.1.2 Wire size: diameter in inches (see 5.1 and Table 1);
3.1.3 Package size (see 15.1);
3.1.4 Special package marking, if required (Section 15); and
3.1.5 Place of inspection (13.2).
4. Material
4.1 The wire shall be composed of a steel core with a substantially uniform and continuous copper cladding thoroughly bonded
to it throughout.
4.2 The finished copper-clad steel wire shall conform to the requirements in this specification.
5. Dimensions and Permissible Variations
5.1 The size shall be expressed as the diameter of the wire in decimal fractions of an inch, using four places of decimals, that
is, in tenths of a mil (Note 2).
This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.06 on Bi-Metallic
Conductors.
Current edition approved April 1, 2013Oct. 1, 2018. Published April 2013October 2018. Originally approved in 1996. Last previous edition approved in 20072013 as
B869 – 07.B869 – 07 (2013). DOI: 10.1520/B0869-07R13.10.1520/B0869-07R18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B869 − 07 (2018)
TABLE 1 Properties of Hard-Drawn 21 % Conductivity Copper-
Clad Steel Wire
Nominal Maximum
Permissible Minimum Copper
Diameter, Resistance /1000 ft
A A
Variations Thickness, in.
A
in. at 20°C
0.0641 ±0.0006 in. 12.249 0.00096
0.0571 ±0.0006 in. 15.472 0.00086
0.0508 ±0.0005 in. 19.521 0.00076
0.0453 ±0.0005 in. 24.608 0.00068
0.0403 ±0.0004 in. 31.024 0.00060
0.0320 ±0.0003 in. 49.150 0.00048
0.0285 ±0.0003 in. 62.107 0.00043
A
Metric equivalents: 1 in. = 25.4 mm.
NOTE 2—The values of wire diameters in Table 1 and Table 2 are given to the nearest 0.0001 in. (0.0025 mm) and correspond to the standard sizes
given in Specification B258. In specifying diameters of wire or inspecting wire, the diameter should also be expressed to the fourth decimal place. An
excellent discussion of wire gages and related subjects is contained in NBS Handbook 100.
5.2 Within the range of diameters included in Table 1, the wire shall not vary from the specified diameter by more than 61 %,
expressed to the nearest 0.0001 in. (0.0025 mm).
5.3 Ten percent, but not less than five reels (or all, if the lot is less than five), from any lot of wire shall be gaged. All reels shall
be gaged if any of the selected reels fail to conform to the requirements for diameter.
6. Workmanship, Finish, and Appearance
6.1 The surface of the wire shall be free from imperfections and be consistent with good commercial practice.
7. Tensile and Elongation Properties
7.1 The wire shall conform to a minimum tensile requirement of 120 000 psi (827 MPa) and a minimum elongation requirement
of 1.0 %.
7.2 Tension tests shall be made on representative samples. Unless otherwise agreed upon between the manufacturer and the
purchaser, the elongation shall be determined by measurements made between the jaws of the testing machine. The zero length
shall be the distance between the jaws when a load equal to 10 % of the specified tensile strength has been applied, and the final
length shall be the distance between the jaws at the time of rupture. The zero length shall be as near 10 in. (254 mm) as practicable.
The fracture shall be between the jaws of the testing machine and not closer than 1 in. (25.4 mm) to either jaw. The elongation
as thus determined shall not be less than 1.0 %. See Table 2 for related breaking strengths.
7.3 When agreed upon between the manufacturer and the purchaser, the elongation may be measured by means of an
extensometer suitable for measuring elongation in 10 in. (250 mm) and having a vernier reading to 0.01 in. (0.25 mm) attached
to the test specimen at a tension load of approximately 10 % of rated strength. The elongation as thus determined shall not be less
than 1.0 %. If the fracture occurs before the 1.0 % elongation requirement and outside the two attachments of the extensometer
to the specimen, this sample s
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.