ASTM B98/B98M-97

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Designation: B 98/98M – 97
METRIC
Standard Specification for
Copper-Silicon Alloy Rod, Bar and Shapes
This standard is issued under the fixed designation B 98/98M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope * E 62 Test Methods for Chemical Analysis of Copper and
Copper Alloys (Photometric Method)
1.1 This specification establishes requirements for copper-
E 478 Test Methods for Chemical Analysis of Copper
silicon rod, bar, and shapes for UNS Alloys C65100 (Low
Alloys
Silicon Bronze B), C65500 (High Silicon Bronze A), and
C66100.
3. General Requirements
NOTE 1—Material for hot forging is covered by Specification B 124.
3.1 The following sections of Specification B 249 or
1.2 The values stated in inch-pound units or SI units are to B 249M constitute a part of this specification:
3.1.1 Terminology,
be regarded separately as standard. Within the text, SI units are
shown in brackets. The values in each system are not exact 3.1.2 Materials and Manufacture,
3.1.3 Workmanship, Finish, and Appearance,
equivalents; therefore, each system shall be used independently
of the other. Combining values from the two systems may 3.1.4 Sampling,
3.1.5 Number of Tests and Retests,
result in nonconformance with the specification.
3.1.6 Specimen Preparation,
2. Referenced Documents
3.1.7 Test Methods,
2.1 The following documents of the issue in effect on date 3.1.8 Significance of Numerical Limits,
of material purchase form a part of this specification to the 3.1.9 Inspection,
extent referenced herein: 3.1.10 Rejection and Rehearing,
2.2 ASTM Standards: 3.1.11 Certification,
B 124 Specification for Copper and Copper-Alloy Forging 3.1.12 Test Report (Mill),
Rod, Bar and Shapes 3.1.13 Packaging and Package Marking, and
B 249 Specification for General Requirements for Wrought 3.1.14 Supplemental Requirements.
Copper and Copper-Alloy Rod, Bar, Shapes and Forgings 3.2 In addition, when a section with a title identical to one
B 249M Specification for General Requirements for of those referenced in 3.1 appears in this specification, it
Wrought Copper and Copper-Alloy Rod, Bar, Shapes and contains additional requirements that supplement those which
Forgings [Metric] appear in Specification B 249 or B 249M.
B 601 Practice for Temper Designations for Copper and
3 4. Ordering Information
Copper Alloys—Wrought and Cast
4.1 Orders for product under this specification should in-
E 8 Test Methods for Tension Testing of Metallic Materials
E 8M Test Methods for Tension Testing of Metallic Mate- clude the following information:
4.1.1 ASTM Designation and year of issue,
rials [Metric]
E 54 Test Methods for Chemical Analysis of Special 4.1.2 Copper Alloy UNS No. designation,
4.1.3 Temper designation,
Brasses and Bronzes
4.1.4 Quantity; total weight or length, or number of pieces
of each temper, form, or alloy,
This specification is under the jurisdiction of ASTM Committee B-5 on Copper
4.1.5 Dimensions; diameter or distance between parallel
and Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,
Bar, Wire, Shapes, and Forgings. surfaces,
Current edition approved Feb. 10, 1997. Published October 1997. Originally
4.1.6 Type of edge; edge contours,
published as B 98 – 34T. Last previous edition B 98 – 93.
4.1.7 How furnished; specific lengths with or without ends,
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
and
cation SB-98 in Section II of that code.
Annual Book of ASTM Standards, Vol 02.01.
4.1.8 When material is purchased for agencies of the U.S.
Annual Book of ASTM Standards, Vol 03.01.
Government (see Specifications B 249 or B 249M).
Annual Book of ASTM Standards, Vol 03.05.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
B 98/98M
4.2 The following options are available under this specifi- to the requirements of Table 2, Table 3 when tested in
cation and should be specified in the contract or purchase order accordance with Test Methods E 8 or E 8M.
when required:
9. Dimensions, Mass and Permissible Variations
4.2.1 Certification (Specifications B 249 or B 249M), and
4.2.2 Mill Test Report (Specifications B 249 or B 249M).
9.1 Refer to the appropriate paragraphs in Specification
B 249/B 249M with particular reference to the following
5. Material and Manufacture
tables:
5.1 The starting material shall be cast billets or rods of
9.2 Diameter or Distance Between Parallel Surfaces:
Copper Alloy UNS Numbers C65100, C65500, or C66100, and
9.2.1 Rod: Round, Hexagonal, Octagonal—Refer to Table 1
shall be of such soundness and structure as to enable them to
for Alloy C65100 and to Table 2, Table 3 for Alloys C65500
be processed into the product specified in the contract or
and C66100.
purchase order.
9.2.2 Rod: Round M20 Temper—Refer to Table 6.
5.2 The product shall be manufactured by such hot-
9.2.3 Rod: Round, Hexagonal, Octagonal, M30 Temper—
working, cold-working, straightening, and annealing process-
Refer to Table 5.
ing as to produce a uniform wrought structure and obtain the
9.2.4 Bar: Rectangular and Square—Refer to Table 8 and
required finish properties.
Table 10 for Alloy C65100, and Table 9 and Table 11 for Alloys
6. Chemical Composition
C65500 and C66100.
9.2.5 Bar: M30 Temper—Refer to Table 5 for thickness and
6.1 The product shall conform to the chemical requirements
width tolerances.
specified in Table 1 for the Copper Alloy UNS No. designated
9.3 Shapes—The dimensional tolerance for shapes shall be
in the ordering information.
6.1.1 When all elements listed in Table 1 are determined for as agreed upon between the manufacturer and the purchaser,
and shall be specified in the order.
the designated alloy, the sum of results shall be 99.5 % min.
6.1.2 Copper may be determined as the difference between 9.4 Length:
the sum of results for all elements analyzed an 100 %. 9.4.1 Rod, Bar and Shapes—Refer to Table 13 and Table 15.
6.2 These composition limits do not preclude the presence
9.5 Straightness:
of other elements. Limits may be established and analysis
9.5.1 Rod and Bar—Refer to Table 16.
required for unnamed elements by agreement between the
9.6 Edge Contours:
manufacturer and the purchaser.
9.6.1 Rod and Bar—Refer to the section entitled, “Edge
Contours” and to Figs. 1, 2, and 3.
7. Temper
7.1 Tempers, as defined in Practice B 601, available under
10. Test Methods
this specification are O60 (soft anneal), H01 (quarter-hard),
10.1 Chemical composition shall, in case of disagreement,
H02 (half-hard), H04 (hard), H06 (extra hard)
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