ASTM B470-02

Standard Specification for Bonded Copper Conductors for Use in Hookup Wires for Electronic Equipment

SCOPE
1.1 This specification covers stranded uninsulated bare, tin, or tin-lead alloy coated copper conductors in which wires in the strand are metallically bonded together by the application of heat or additional tin, or tin-lead alloy for use in hookup wire for electronic equipment.
1.2 The SI values for density and resistivity are to be regarded as standard. For all other properties, the inch-pound values are to be regarded as the standard and the SI units may be approximate.
1.3 The hazard caveat pertains only to Section 6 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.

General Information

• Status: Historical
• Publication Date: 09-Oct-2002
• ICS: 29.060.10 - Wires
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.04 - Conductors of Copper and Copper Alloys

Relations

• Replaces: ASTM B470-95 - Standard Specification for Bonded Copper Conductors for Use in Hookup Wires for Electronic Equipment
• Effective Date: 10-Oct-2002
• Replaced By: ASTM B470-02(2007) - Standard Specification for Bonded Copper Conductors for Use in Hookup Wires for Electronic Equipment
• Effective Date: 15-Mar-2007

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: B 470 – 02
Standard Specification for
Bonded Copper Conductors for Use in Hookup Wires for
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Electronic Equipment
This standard is issued under the fixed designation B 470; 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 4. Conductor Constructions
1.1 This specification covers stranded uninsulated bare, tin, 4.1 Conductor constructions shall conform to the applicable
ortin-leadalloycoatedcopperconductorsinwhichwiresinthe constructionsofSpecificationB 286,exceptthatinadditionthe
strand are metallically bonded together by the application of following bondings may be specified:
heat or additional tin, or tin-lead alloy for use in hookup wire 4.1.1 Type I—Bare copper, stranded, light bonding,
for electronic equipment. 4.1.2 Type II—Tin or tin-lead alloy coated copper, stranded,
1.2 The SI values for density and resistivity are to be light bonding, or
regarded as standard. For all other properties, the inch-pound 4.1.3 Type III—Tin or tin-lead alloy coated copper,
values are to be regarded as the standard and the SI units may stranded, heavy bonding.
be approximate.
5. General Requirements
1.3 The hazard caveat pertains only to Section 6 of this
specification. This standard does not purport to address all of 5.1 The conductors shall consist of tinned copper conform-
ing to the product description, quality and specification re-
the safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- quirements of Specification B 286 and bare copper conforming
to the product description, quality and specification require-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. ments of Specification B 3.
5.2 Flex Life—The average of six flex tests specified in 6.1
2. Referenced Documents
shall meet the minimum requirements of Table 1 for the
2.1 The following documents of the issue in effect at the applicable type and construction.
time of reference form a part of this specification to the extent 5.3 Fraying, Types I and II—After performing the test in
referenced herein: 6.2,noseparationsofstrandsshallbevisibletotheunaidedeye
2.2 ASTM Standards: (normal spectacles excepted), from the cut end to the point of
2
B 3 Specification for Soft or Annealed Copper Wire bend nearest to that cut end.
B 286 Specification for Copper Conductors for Use in 5.4 Mandrel Test, Type III Only (see Explanatory Note
2
Hookup Wire for Electronic Equipment 1)—After performing the test specified in 6.3 no separation of
strands shall be visible to the unaided eye (normal spectacles
3. Ordering Information
excepted).
3.1 Orders for material under this specification shall include
6. Test Methods
the following information:
3.1.1 Quantity of each size, material, construction, and type 6.1 Flex Life—The testing equipment shall be designed and
(see 4.1), set up for operation so that steel mandrels shall be horizontal
3.1.2 Package size (see 8.1), and so positioned that any vertical movement of the specimen
3.1.3 Special package marking if required (Section 8), and is minimized. The conductor as clamped for test shall pass
3.1.4 Place of inspection (Section 7). through the vertical center line between the mandrels.
6.1.1 The conductor shall be bent repeatedly in alternating
directions in an arc of 60° on both sides of the vertical center
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line of the mandrels, at a rate of 24 to 36 cpm, between
This specification is under the jurisdiction of ASTM Committee B01 on
Electrical Conductors and is the direct responsibility of Subcommittee B01.04 on
mandrels of size and spacing specified in Table 2. The
Conductors of Copper and Copper Alloys.
mandrels must be so supported that the specified spacing
Current edition approved Oct. 10, 2002. Published January 2003. Originally
during test is maintained. Mandrel deflection must be avoided.
approved in 1968. Last previous edition approved in 1995 as B 470 – 95.
2
Annual Book of ASTM Standards, Vol 02.03. The conductor shall be clamped at a point not less than 1 in.
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B 470–02
TABLE 1 Flex Life Requirements, Minimum Cycles
the manufacturer and the purchaser at the time of the purchase.
Un- The manufacturer shall afford the inspector representing the
Type I
bonded Type III
purchaser all reasonable facilities to satisfy him that the
and II
Construction (see (Heavy
(Light
material is being furnished in accordance with this sp
...