ASTM B976-11(2015)

Standard Specification for Fiber Reinforced Aluminum Matrix Composite (AMC) Core Wire for Aluminum Conductors, Composite Reinforced (ACCR)

ABSTRACT
This specification covers fiber reinforced, aluminum matrix composite wire used for mechanical reinforcement in the manufacture of aluminum conductor, composite reinforced (ACCR). This wire consists of continuous filament fibers of aluminum oxide in a matrix of aluminum. The fiber reinforcement shall be continuous tows of aluminum oxide. Before stranding, the composite core wire of any diameter shall conform to the tensile breaking load requirements.
SCOPE
1.1 This specification covers fiber reinforced, aluminum matrix composite core wire used for mechanical reinforcement in the manufacture of aluminum conductor, composite reinforced (ACCR). This wire consists of continuous filament fibers of aluminum oxide in a matrix of aluminum.  
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.  
1.2.1 Exception—Some non-standard SI units provided for information only do not appear in brackets.  
1.3 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.

General Information

• Status: Historical
• Publication Date: 30-Sep-2015
• ICS: 29.060.10 - Wires
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.07 - Conductors of Light Metals

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:B976 −11 (Reapproved 2015)
Standard Specification for
Fiber Reinforced Aluminum Matrix Composite (AMC) Core
Wire for Aluminum Conductors, Composite Reinforced
1
(ACCR)
This standard is issued under the fixed designation B976; 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. Terminology
3.1 Definitions of Terms Specific to This Standard:
1.1 This specification covers fiber reinforced, aluminum
3.1.1 fiber reinforced aluminum matrix composite wire, n—a
matrix composite core wire used for mechanical reinforcement
wire consisting of two constituents: the first a number of
in the manufacture of aluminum conductor, composite rein-
continuousfibersofaluminumoxidealongtheaxisofthewire,
forced (ACCR). This wire consists of continuous filament
which is embedded in the second constituent of aluminum
fibers of aluminum oxide in a matrix of aluminum.
metal, as shown in Fig. 1.
1.2 The values stated in inch-pound units are to be regarded
3.1.2 lot, n—unless otherwise specified in the contract or
as standard. The values given in parentheses are mathematical
order, a lot shall consist of all coils of wire of the same
conversions to SI units that are provided for information only
diameter submitted for inspection at the same time.
and are not considered standard.
3.1.3 production unit, n—a reel, spool, or other package of
1.2.1 Exception—Some non-standard SI units provided for
wire that represents a single usable length.
information only do not appear in brackets.
3.1.4 sample, n—the production unit(s) from which a test
1.3 This standard does not purport to address all of the
specimen(s) has been removed, and which is considered to
safety concerns, if any, associated with its use. It is the
have properties representative of the lot.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 3.1.5 specimen, n—a length of wire removed for test pur-
bility of regulatory limitations prior to use. poses.
3.1.6 tow, n—a bundle, containing multiple fibers.
2. Referenced Documents
3.1.7 AMC, n—Aluminum Matrix Composite, a material
2.1 The following documents of the issue in effect on date
consisting of two constituents: the first a series of continuous
of material purchase form a part of this specification to the fibers of aluminum oxide which is embedded in the second
extent referenced herein.
constituent of aluminum metal.
2
3.1.8 ACCR, n—Aluminum Conductor Composite
2.2 ASTM Standards:
Reinforced, a concentric-lay-stranded conductor made up of
B193 Test Method for Resistivity of Electrical Conductor
outer aluminum strands of hard, heat resistant aluminum wires
Materials
and a core of round, aluminum matrix composite wire(s), for
B830 Specification for Uniform Test Methods and Fre-
use as overhead electrical conductors.
quency
D3552 Test Method for Tensile Properties of Fiber Rein-
4. Ordering Information
forced Metal Matrix Composites
4.1 Orders for material under this specification shall include
the following information:
4.1.1 Quantity of each size,
1
This specification is under the jurisdiction of ASTM Committee B01 on
4.1.2 Wire size (see 8.1),
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on
4.1.3 Place of inspection (see 11.1),
Conductors of Light Metals.
4.1.4 Package size and type (see 12.1),
Current edition approved Oct. 1, 2015. Published October 2015. Originally
approved in 2011. Last previous edition approved in 2011 as B976 – 11. DOI:
4.1.5 Special package marking.
10.1520/B0976-11R15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5. Materials and Manufacture
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.1 The fiber reinforcement shall be continuous tows of
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. aluminum oxide.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B976−11 (2015)
NOTE 1—Dark Phases are fiber viewed end-on and the light phase is aluminum matrix. The equivalent diameter of the fibers is approximately 470 µin.
(12 µm).
FIG. 1Polished Cross-section of an Aluminum Matrix Composite Wire
5.2 The core wires shall be of such quality and purity that 7. Density and Resistivity
the finished product shall have the approximate properties and
7.1 For the purposes of calculating mass per unit length,
characteristics prescribed in this specification, including break-
cross-sec
...

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: B976 − 11 B976 − 11 (Reapproved 2015)
Standard Specification for
Fiber Reinforced Aluminum Matrix Composite (AMC) Core
Wire for Aluminum Conductors, Composite Reinforced
1
(ACCR)
This standard is issued under the fixed designation B976; 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 fiber reinforced, aluminum matrix composite core wire used for mechanical reinforcement in the
manufacture of aluminum conductor, composite reinforced (ACCR). This wire consists of continuous filament fibers of aluminum
oxide in a matrix of aluminum.
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.
1.2.1 Exception—Some non-standard SI units provided for information only do not appear in brackets.
1.3 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.
2. Referenced Documents
2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extent
referenced herein.
2
2.2 ASTM Standards:
B193 Test Method for Resistivity of Electrical Conductor Materials
B830 Specification for Uniform Test Methods and Frequency
D3552 Test Method for Tensile Properties of Fiber Reinforced Metal Matrix Composites
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 fiber reinforced aluminum matrix composite wire, n—a wire consisting of two constituents: the first a number of
continuous fibers of aluminum oxide along the axis of the wire, which is embedded in the second constituent of aluminum metal,
as shown in Fig. 1.
3.1.2 lot, n—unless otherwise specified in the contract or order, a lot shall consist of all coils of wire of the same diameter
submitted for inspection at the same time.
3.1.3 production unit, n—a reel, spool, or other package of wire that represents a single usable length.
3.1.4 sample, n—the production unit(s) from which a test specimen(s) has been removed, and which is considered to have
properties representative of the lot.
3.1.5 specimen, n—a length of wire removed for test purposes.
3.1.6 tow, n—a bundle, containing multiple fibers.
3.1.7 AMC, n—Aluminum Matrix Composite, a material consisting of two constituents: the first a series of continuous fibers
of aluminum oxide which is embedded in the second constituent of aluminum metal.
1
This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on Conductors
of Light Metals.
Current edition approved April 1, 2011Oct. 1, 2015. Published May 2011October 2015. Originally approved in 2011. Last previous edition approved in 2011 as B976 –
11. DOI: 10.1520/B0976-11.10.1520/B0976-11R15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B976 − 11 (2015)
NOTE 1—Dark Phases are fiber viewed end-on and the light phase is aluminum matrix. The equivalent diameter of the fibers is approximately 470 μin.
(12 μm).
FIG. 1 Polished Cross-section of an Aluminum Matrix Composite Wire.Wire
3.1.8 ACCR, n—Aluminum Conductor Composite Reinforced, a concentric-lay-stranded conductor made up of outer aluminum
strands of hard, heat resistant aluminum wires and a core of round, aluminum matrix composite wire(s), for use as overhead
electrical conductors.
4. Ordering Information
4.1 Orders for material under this specification shall include the following information:
4.1.1 Quantity of each size,
4.1.2 Wire size (see 8.1),
4.1.3 Place of inspection (see 11.1),
4.1.4 Package size and type (see 12.1) ),
4.1.5 Special package markingmarking.
5. Materials and Manufacture
...