ASTM B197/B197M-07(2013)

Standard Specification for Copper-Beryllium Alloy Wire

ABSTRACT
This specification establishes the requirements for copper-beryllium alloy (Copper Alloy UNS Nos. C17200 and C173002) wires in coils, spools, or other forms except straight lengths, of any uniform cross section. Products shall be available in the following tempers: solution heat-treated TB00, and cold-worked TD00 to TD04, which shall be precipitation heat treated after forming. Products that are already precipitation heat treated by the manufacturer shall be available in tempers TF00 (AT), and TH01 to TH04. Products shall be sampled and prepared, then tested accordingly to examine their conformance to dimensional (diameter, thickness, length, width, and straightness), mechanical (tensile and bend strength, Rockwell hardness, and elongation), physical (grain size and count), and chemical composition requirements.
SCOPE
1.1 This specification establishes the requirements for copper-beryllium alloy wire in coils, spools, or other than straight lengths, of any uniform cross section. Copper Alloy UNS Nos. C17200 and C173002 are included.  
1.2 Unless otherwise required, Copper Alloy UNS No. C17200 shall be the alloy furnished whenever Specification B197/B197Mis specified without any alloy designation.  
1.3 The values stated in either inch-pounds or SI units are to be regarded separately as the standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.  
1.4 The following safety hazard caveat pertains only to the test methods described in this specification:  
1.4.1 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: 31-Mar-2013
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.02 - Rod, Bar, Wire, Shapes and Forgings

Relations

• Replaces: ASTM B197/B197M-07 - Standard Specification for Copper-Beryllium Alloy Wire
• Effective Date: 01-Apr-2013
• Referred By: ASTM B250/B250M-19 - Standard Specification for General Requirements for Wrought Copper Alloy Wire
• Effective Date: 01-Apr-2013

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:B197/B197M −07 (Reapproved 2013)
Standard Specification for
Copper-Beryllium Alloy Wire
This standard is issued under the fixed designation B197/B197M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* B601 Classification forTemper Designations for Copper and
Copper Alloys—Wrought and Cast
1.1 This specification establishes the requirements for
B846 Terminology for Copper and Copper Alloys
copper-beryllium alloy wire in coils, spools, or other than
E8 Test Methods for Tension Testing of Metallic Materials
straight lengths, of any uniform cross section. Copper Alloy
2 E8M Test Methods forTensionTesting of Metallic Materials
UNS Nos. C17200 and C17300 are included.
[Metric] (Withdrawn 2008)
1.2 Unless otherwise required, Copper Alloy UNS No.
E112 Test Methods for Determining Average Grain Size
C17200 shall be the alloy furnished whenever Specification
E527 Practice for Numbering Metals and Alloys in the
B197/B197Mis specified without any alloy designation.
Unified Numbering System (UNS)
1.3 The values stated in either inch-pounds or SI units are to
3. General Requirements
be regarded separately as the standard. Within the text, the SI
units are shown in brackets. The values stated in each system
3.1 The following sections of Specification B250/B250M
are not exact equivalents; therefore, each system shall be used
constitute a part of this specification:
independently of the other. Combining values from the two
3.1.1 Terminology,
systems may result in nonconformance with the specification.
3.1.2 Material and Manufacturer,
3.1.3 Chemical Composition,
1.4 The following safety hazard caveat pertains only to the
3.1.4 Dimensions and Permissible Variations,
test methods described in this specification:
3.1.5 Workmanship, Finish, and Appearance,
1.4.1 This standard does not purport to address all of the
3.1.6 Sampling,
safety concerns, if any, associated with its use. It is the
3.1.7 Number of Tests and Retests,
responsibility of the user of this standard to establish appro-
3.1.8 Specimen Preparation,
priate safety and health practices and determine the applica-
3.1.9 Test Methods,
bility of regulatory limitations prior to use.
3.1.10 Significance of Numerical Limits,
3.1.11 Inspection,
2. Referenced Documents
3.1.12 Rejection and Rehearing,
2.1 ASTM Standards:
3.1.13 Certification,
B194 Specification for Copper-BerylliumAlloy Plate, Sheet,
3.1.14 Mill Test Report, and
Strip, and Rolled Bar
3.1.15 Packaging and Package Marking.
B250/B250M Specification for General Requirements for
3.2 In addition, when a section with a title identical to that
Wrought Copper Alloy Wire
referenced in 3.1 above, appears in this specification, it
contains additional requirements which supplement those ap-
1 pearing in Specification B250/B250M.
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
and CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod,
Bar, Wire, Shapes and Forgings.
4. Terminology
Current edition approved April 1, 2013. Published April 2013. Originally
4.1 For definitions of terms related to copper and copper
approved in 1945. Last previous edition approved in 2007 as B197/B197M – 07.
DOI: 10.1520/B0197_B0197M-07R13.
alloys, refer to Terminology B846.
The UNS system for copper and copper alloys (see Practice E527) is a simple
4.2 Definitions of Terms Specific to This Standard:
expansion of the former standard designation system accomplished by the addition
of a prefix “C” and a suffix “00.” The suffix can be used to accommodate
4.2.1 grain count—thenumberofgrainsperstockthickness.
composition variations of the base alloy.
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’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B197/B197M−07 (2013)
5. Ordering Information 7. Temper
5.1 Include the following information when placing orders 7.1 The standard tempers available under this specification
for product under this specification, as applicable: and as specified in Practice B601 are TB00 (solution heat
5.1.1 ASTM specification designation and year of issue, treated), or with varying degrees of cold work TD00 to TD04
5.1.2 Copper (Alloy) UNS No. designation, to be precipitation heat treated by the user. Also available are
5.1.3 Temper (Section 7), products already precipitation heat-treated by the
5.1.4 Dimensions, diameter, or distance between parallel manufacturer, tempers TF00 (AT), TH01 to TH04. These
surfaces, and length if applicable, products meet property requirements in Tables 2 and 3 and
5.1.5 Form of material: cross section such as round, generally do not require further heat treatment by the user.
hexagonal, octagonal, oval, trapezoidal, and so forth,
7.2 The pretempered product TL08 shown in Table 4 is
5.1.6 How furnished: coils spools, reels, or bucks, and
prepared by the manufacturer for special applications.
specific lengths with or without ends or stock lengths with or
NOTE 1—Special or nonstandard tempers are subject to negotiation
without ends if applicable, and
between the supplier and the purchaser.
5.1.7 When material is ordered for agencies of the U.S.
Government (see Section 15).
8. Precipitation Heat Treatment
5.2 The following options are available and should be
8.1 The precipitation heat treatment is normally performed
specified in the contract or purchase order when required:
by the purchaser after forming. The heat treatment specified
5.2.1 Type of edge: square corners, round edge, full-
herein is applicable to mill products. Other treatment times and
rounded edge (see the Edge Contours section in the Dimen-
temperatures may be preferable for end products made from
sions and Permissible Variations Section of Specification
this material.
B250/B250M),
8.2 Conformance to the TF00 (AT) through TH04 (HT)
5.2.2 Grain size (Section 9.1),
specification limits shown in Tables 2 and 3 for products
5.2.3 Grain count (Section 9.2),
supplied in the TB00 (A) through TD04 (H) tempers, shall be
5.2.4 Mechanical properties (tensile strength and hardness)
determined by testing test specimens heat-treated at a uniform
(Section 10),
temperature of 600 to 625°F [316 to 329°C] for the times
5.2.5 Bend test (after precipitation heat treatment) (11.1),
shown in Table 5.
5.2.6 Heat identification or traceability details,
8.3 Special combinations of properties such as increased
5.2.7 Special packaging requirements,
ductility, electrical conductivity, dimensional accuracy, endur-
5.2.8 Certification, and
ancelife,andresistancetoelasticdriftandhysteresisinsprings
5.2.9 Mill test report.
may be obtained by special precipitation-hardening heat treat-
6. Chemical Composition
ments. The mechanical requirements of Tables 2 and 3 do not
apply to such special heat treatments.
6.1 The material shall conform to the chemical composition
requirements prescribed in Table 1 for copper alloy UNS No.
9. Physical Property Requirements
designation specified in the ordering information.
9.1 Grain Size—The average grain size of each of two
6.2 These composition limits do not preclude the presence
samples of rectangular other than square wire, in thicknesses
of other elements. Limits for unnamed elements may be
established and analysis required by agreement between the
TABLE 2 Tensile Strength Requirements for Round, Hexagonal,
manufacturer or supplier and purchaser.
Octagonal, and Square Wire After Precipitation Heat Treatment
(See 11.2)
6.3 Copper is customarily given as remainder, but may be
A
Temper Designation Tensile Strength,
taken as the difference between the sum of all elements
B
Standard Former ksi MPa
analyzed and 100 %.
C
TF00 Precipitation 160–200 [1105–1380]
6.4 When all the elements in Table 1 are determined, the
hardened (AT)
C
TH01 ⁄4 hard and 175–210 [1205–1450]
sum of results shall be 99.5 % min.
precipitation heat
treated ( ⁄4 HT)
TH02 ⁄2 hard and 185–215 [1275–1480]
precipitation heat
TABLE 1 Chemical Requirements
treated ( ⁄2 HT)
Composition, %
TH03 ⁄4 hard and 190–230 [1310–1585]
Element
Copper Alloy UNS Copper Alloy UNS precipitation heat
D
treated ( ⁄4 HT)
No. C17200 No. C17300
TH04 Hard and 195–230 [1345–1585]
Beryllium 1.80–2.00 1.80–2.00
precipitation heat
Additive elements:
treated (HT)
Nickel + cobalt, min 0.20 0.20
A
Nickel + cobalt + iron, max 0.6 0.6
These values apply to mill products (see 11.2).
B
Lead . . . 0.20–0.6 ksi = 1000 psi.
C
Aluminum, max 0.20 0.20
Corrected editorially.
D
Silicon, max 0.20 0.20 TH03 ( ⁄4 HT) condition is generally available up to 0.080 in. [2.0 mm], inclusive,
Copper remainder remainder
in diameter or distance between parallel surfaces.
B197/B197M−07 (2013)
A
TABLE 3 Mechanical Property Requirements for Rectangular Other Than Square Wire After Precipitation Heat Treatment (See 11.2)
NOTE 1—Rockwell hardness values apply only to direct determinations, not converted values.
A B
Temper Designation Tensile Strength Rockwell hardness
15N Scale,
C
Standard Former ksi MPa C Scale, min 30N Scale, min
min
TF00 Precipitation hardened (AT) 165–190 [1140–1310] 36 56 78
1 1
TH01 ⁄4 hard and precipitation heat treated ( ⁄4 H) 175–200 [1210–1380] 38 58 79
1 1
TH02 ⁄2 hard and precipitation heat treated ( ⁄2 HT) 185–210 [1280–1450] 39 59 79.5
TH04 Hard and precipitation heat treated (HT) 190–215 [1310–1480] 40 60 80
A
The upper limit in the tensile strength column applies to material thicker than 0.020 in. [0.50 mm].
B
The thickness of material that may be tested in the case of the Rockwell hardness scales is as follows:
C Scale 0.032 i
...