ASTM B534-20

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.
´1
Designation: B534 − 14 B534 − 20
Standard Specification for
Copper-Cobalt-Beryllium Alloy and Copper-Nickel-Beryllium
Alloy Plate, Sheet, Strip, and Rolled Bar
This standard is issued under the fixed designation B534; 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.
ε NOTE—Footnote A in Tables 3 and 4 was corrected editorially in March 2015.
1. Scope*
1.1 This specification establishes the requirements for plate, sheet, strip, and rolled bar. The following alloys are included:
Previously Nominal Composition, %
Copper Alloy Used
UNS No. Designation Beryllium Cobalt Nickel Iron
C17500 Alloy 10 0.6 2.5 . .
C17510 Alloy 3 or 14 0.4 . 1.8 .
C71700 . 0.5 . 31.0 0.70
1.2 Units—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 The following safety hazard caveat pertains only to the test methods described in this specification:
1.4 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 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 ASTM Standards:
B194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
B248 Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar
B248M Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar
(Metric)
B601 Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
B846 Terminology for Copper and Copper Alloys
E8/E8M Test Methods for Tension Testing of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
3. General Requirements
3.1 The following sections of SpecificationSpecifications B248 or B248M constitute a part of this specification:
3.1.1 Terminology,Terminology;
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.01 on Plate,
Sheet, and Strip.
Current edition approved April 1, 2014April 1, 2020. Published May 2014May 2020. Originally approved in 1970. Last previous edition approved in 20122014 as
e1
B534 – 12.B534-14 . DOI: 10.1520/B0534-14E01.10.1520/B0534-20.
The UNS system for copper and copper alloys (see Practice E527) is a simple 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 composition variations of the base alloy.
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’sstandard’s Document Summary page on the ASTM website.
*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
B534 − 20
3.1.2 Materials and Manufacture,Manufacture;
3.1.3 Dimensions and Permissible Variations,Variations;
3.1.4 Workmanship, Finish, and Appearance,Appearance;
3.1.5 Sampling,Sampling;
3.1.6 Number of Tests and Retests,Retests;
3.1.7 Specimen Preparation,Preparation;
3.1.8 Test Methods,Methods;
3.1.9 Significance of Numerical Limits,Limits;
3.1.10 Inspection,Inspection;
3.1.11 Rejection and Rehearing,Rehearing;
3.1.12 Certification,Certification;
3.1.13 Mill Test Report,Report;
3.1.14 Packaging and Package Marking,Marking; and
3.1.15 Heat Identification.
3.2 In addition, when a section with a title identical to that referenced in 3.1, above, appears in this specification, it contains
additional requirements that supplement those appearing in SpecificationSpecifications B248 or B248M.
4. Terminology
4.1 For definitions of terms relating to copper and copper alloys, refer to Terminology B846.
5. Ordering Information
5.1 Include the following information specified choices when placing orders for product under this specification as applicable:
5.1.1 ASTM designation and year of issue,issue;
5.1.2 Quantity,Quantity;
5.1.3 Copper Alloy UNS Number designation (1.1),);
5.1.4 Form of material: plate, sheet, strip, or rolled bar,bar;
5.1.5 Temper (8.1),);
5.1.6 Dimensions: thickness and width, and length if applicable,applicable;
5.1.7 How furnished: rolls, stock lengths with or without ends, specific lengths with or without ends,ends; and
5.1.8 When material is ordered for agencies of the U.S. government.Government.
5.2 The following options are available and should be specified in the contract or purchase available, but may not be included
unless specified at the time of placing the order when required:
5.2.1 Type of edge, if required: slit, sheared, sawed, square corners, rounded corners, rounded edges, or full-rounded edges
(12.6),);
5.2.2 Type of width and straightness tolerances, if required: slit-metal tolerances, square-sheared-metal tolerances, sawed-metal
tolerances, straightened or edge-rolled-metal tolerances (12.5),);
5.2.3 Special thickness tolerances, if required (12.2),);
5.2.4 Tension test or hardness as applicable (Section 10),);
5.2.5 Certification if required (see SpecificationSpecifications B248), or B248M);
5.2.6 Mill Test Report, if required (see SpecificationSpecifications B248), or B248M);
5.2.7 Specification number and year of issue,issue; and
5.2.8 Special tests or exceptions, if any.
6. Materials and Manufacture
6.1 Material:
6.1.1 The material of manufacture shall be Copper Alloy No. UNS Nos. C17500, C17510, or C71700 cast and worked, and of
such purity and soundness as to be suitable for processing into the products prescribed herein.
6.1.2 Heat traceability shall be maintained and reported on the Mill Test Report or Certification.
6.2 Manufacture:
6.2.1 The product shall be produced with a combination of hot working, cold working, and thermal processing to produce a
uniform wrought structure, and the specified temper.
7. Chemical Composition
7.1 The material shall conform to the chemical composition requirements specified in Table 1.
7.2 These specificationcomposition limits do not preclude the presence of other elements. Limits for unnamed elements may
be established by agreement between the manufacturer or supplier and purchaser.
B534 − 20
TABLE 1 Chemical Requirements
Composition, %
Element
Copper Alloy UNS Copper Alloy UNS Copper Alloy UNS
No. C17500 No. C17510 No. C71700
Beryllium 0.4–0.7 0.2–0.6 0.30-0.7
Cobalt 2.4–2.7 0.3 max .
Silicon, max 0.20 0.20 .
Nickel . 1.4–2.2 29.0-33.0 (Incl Co)
Iron 0.10 max 0.10 max 0.40–1.0
Aluminum, max 0.20 0.20 .
Manganese, max . . 1.0
Zinc, max . . 1.0
Copper balance balance balance
7.3 Copper may be given as remainder and may be taken asFor alloys in which copper is listed as “remainder,” copper is the
difference between the sum of results of all elements analyzeddetermined and 100 %.
7.4 When all the elements in Table 1are analyzed, their sum shall be 99.5 % minimum.
8. Temper
8.1 Standard The standard tempers for product described in this specification are given in Tables 2-6. Tempers are TB00
(solution heat treated), or TD02 and TD04 (varying degrees of cold work), TF00 or TH02 and TH04 (precipitation heat treated
from the appropriate tempers), or TM02 and TM04 (mill hardened).
8.1.1 Annealed temper TB00 (solution heat-treated),
8.1.2 Cold rolled tempers TD02 and TD04 (varying degrees of cold work),
8.1.3 Precipitation heat-treated tempers TF00 or TH02 and TH04 (precipitation heat-treated from the appropriate tempers),
8.1.4 Mill hardened tempers TM02 and TM04.
9. Precipitation Heat Treatment Heat-Treatment Requirements
9.1 Solution-heat-treated or solution-heat-treated Solution heat-treated or solution heat-treated and cold-worked material is
normally precipitation hardened by the purchaser after forming or machining. For the purpose of determining conformance to
specified mechanical properties of Table 3, a sample of this material shall be heat treated heat-treated as shown in Table 6. Other
heat-treating temperatures and times may be preferred for end products of this material.
9.2 Special combinations of properties may be obtained by special precipitation heat-treating techniques. Mechanical property
requirements of Table 3 do not apply to material so treated.
10. Mechanical Property Requirements
10.1 Tensile Strength Requirements:
TABLE 2 Mechanical Property Requirements for Material
in the Solution-Heat-Treated or Solution-Heat-TreatedSolution
Heat-Treated or Solution Heat-Treated
and Cold-Worked Condition
Elonga-
Rockwell
Temper Designation Tensile Strength
A
B
tion in
Hardness
2 in. (50
C D E
StandardCodeFormerName ksi MPa B 30T
mm), %
Copper Alloy UNS No. C17500 and C17510
Copper Alloy UNS Nos. C17500 and C17510
TB00 A 35–55 (240–380) 20–35 45 max 45 max
TD02 ⁄2 H 60–75 (415–520) 5–10 65–77 60–68
TD04 H 70–85 (480–585) 2–8 78–88 69–75
Copper Alloy UNS No. C71700
T
...