ASTM B569-19

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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: B569 − 14 B569 − 19
Standard Specification for
Brass Strip in Narrow Widths and Light Gage for Heat-
Exchanger Tubing
This standard is issued under the fixed designation B569; 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 establishes the requirements for brass strip in narrow widths and light gages produced from Copper Alloys
Nos. C23000, C26000, and C26130.
NOTE 1—This product is commonly used for the manufacture of thin-wall tubes for water passages in heat exchangers for internal combustion engines
and other closed system closed-system heat sources.
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, which are provided for information only and are not considered standard.
1.2.1 Exception—Grain size and chemical analysis sampling are stated in SI units.
1.3 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:
B601 Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
B846 Terminology for Copper and Copper Alloys
B950 Guide for Editorial Procedures and Form of Product Specifications for Copper and Copper Alloys
E3 Guide for Preparation of Metallographic Specimens
E8/E8M Test Methods for Tension Testing of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods) (Withdrawn 2010)
E112 Test Methods for Determining Average Grain Size
E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E478 Test Methods for Chemical Analysis of Copper Alloys
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
3. Terminology
3.1 For definitions of terms related to copper and copper alloys, refer to Terminology B846.
4. Ordering Information
4.1 Include the following specified choices when placing orders for products under this specification, as applicable:
4.1.1 ASTM designation and year of issue (for example, B569–XX),–XX);
4.1.2 Copper [Alloy] UNS No. designation (for example, C26000),C26000);
4.1.3 Temper (Section 7),);
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 Sept. 1, 2014April 1, 2019. Published November 2014April 2019. Originally approved in 1972. Last previous edition approved in 20092014 as
B569 – 09.B569–14. DOI: 10.1520/B0569-14.10.1520/B0569–19.
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.
The last approved version of this historical standard is referenced on 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
B569 − 19
4.1.4 Dimensions: thickness, width, length (Section 10),); and
4.1.5 Quantity: total weight each form, temper, and size.
4.2 The following options are available but may not be included unless specified at the time of placing of the order when
required:
4.2.1 Heat identification or traceability details,
4.2.2 Certification, and
4.2.3 Mill test report.Test Report.
5. Materials and Manufacture
5.1 Material:
5.1.1 The material of manufacture shall be a form (cast bar, cake, or slab) of Copper Alloy UNS No. C23000, C26000, or
C26130 of such purity and soundness as to be suitable for processing into the products prescribed herein.
5.1.2 When specified in the contract or purchase order,order that heat identification or traceability is required, the purchaser shall
specify the details desired.
NOTE 2—Due to the discontinuous nature of the processing of castings into wrought products, it is not always practical to identify a specific casting
analysis with a specific quantity of finished material.
5.2 Manufacture:
5.2.1 The product width shall be no greater than 3 in. (76.2 mm), and thickness shall be less than 0.0181 in. (0.460 mm).
5.2.2 The product shall be manufactured by such hot-working, cold-working, hot working, cold working, and annealing
processes as to produce a uniform wrought structure in the finished product.
5.2.2.1 The product shall be hot-hot or cold-worked cold worked to the finished size, and subsequently annealed, when required,
to meet the temper properties specified.
5.2.3 Edges:
5.2.3.1 Slit edges shall be furnished.
6. Chemical Composition
6.1 The material shall conform to the chemical compositional requirements in Table 1 for Copper Alloy UNS No. designation
specified in the ordering information.
6.1.1 These composition limits do not preclude the presence of other elements. By agreement between the manufacturer and
purchaser, limits may be established and analysis required for unnamed elements.
6.2 For alloys in which zinc is listed as “remainder,” copper or zinc is taken as the difference between the sum results of all
elements determined and 100 %.
6.3 When all elements listed in Table 1 are determined for C26000 and C26130 the sum of results shall be 99.7 % min and for
C23000 the sum of results shall be 99.8 % min.
7. Temper
7.1 The standard tempers for products described in this specification are given in Table 2 and Table 3 as defined in Classification
B601.
7.1.1 Cold rolled tempers H01 or H02.
7.1.2 Annealed-to-temper O81 or O82.
NOTE 3—The purchaser should confer with the manufacturer or supplier for the availability of product in a specific temper.
8. Grain Size of Annealed Tempers
8.1 Annealed-to-TemperAnnealed-to-temper (O81 and O82) strip shall have an average grain size of 0.015 mm maximum as
determined by Test Methods E112.
TABLE 1 Chemical Requirements
Copper Composition, %
Alloy UNS Lead, Iron,
Copper Arsenic Zinc
No. max max
A
C23000 84.0–86.0 0.05 0.05 . . . Remainder
B
C26000 68.5–71.5 0.07 0.05 . . . Remainder
B
C26130 68.5–71.5 0.05 0.05 0.02–0.08 Remainder
A
Cu + Sum of Named Elements = 99.8 %.
B
Cu + Sum of Named Elements = 99.7 %.
B569 − 19
TABLE 2 Tensile Strength, Yield Strength, and Elongation Requirements for Rolled-to-Temper Material
A A
Tensile Strength, ksi (MPa ) Yield Strength, ksi (MPa ) % Elongation
Copper Alloy Temper At 0.5 % In 2 in.
At 0.2 % Offset
UNS No. Designation Extension Under Load (50 mm)
Code Name Minimum Maximum Minimum Maximum Minimum Maximum Minimum
C23000 H01 ⁄4 Hard 44 (305) 54 (370) 25 (170) 48 (330) 23 (160) 48 (330) 18
C26000 and C26130 H01 ⁄4 Hard 49 (340) 59 (405) 33 (230) 48 (330) 30 (205) 45 (205) 12
C26000 and C26130 H02 ⁄2 Hard 58 (400) 68 (470) 43 (295) 58 (400) 40 (275) 55 (380) 10
A
See Appendix X1.
TABLE 3 Tensile Strength, Yield Strength, and Elongation Requirements for Annealed-to-Temper Material
A A
Tensile Strength, ksi (MPa ) Yield Strength, ksi (MPa ) % Elongation
Copper Alloy Temper At 0.5 % In 2 in.
At 0.2 % Offset
UNS No. Designation Extension Under Load (50 mm)
Code Minimum Maximum Minimum Maximum Minimum Maximum Minimum
C23000 O81 42 (210) 52 (360) 21 (145) 36 (250) 20 (140) 35 (240) 34
C26000 and C26130 O82 60 (415) 70 (485) 35 (240) 50 (345) 34 (235) 49 (340) 25
A
See Appendix X1.
9. Mechanical Property Requirement
9.1 Tensile Strength Requirement:
9.1.1 Product furnished to this specification shall conform to the tensile strength requirements prescribed in Tables 2 and 3 for
the temper and alloy specified in the ordering information when tested in accordance with Test Methods E8/E8M.
9.2 Yield Strength Requirement:
9.2.1 Product furnished to this specification shall be capable of conforming to the yield strength requirements prescribed in
Tables 2 and 3 for the temper and alloy specified in the ordering information when tested in accordance with Test Methods
E8/E8M. The purchaser must specify at the time of ordering which yield strength method shall be used.
9.3 Elongation Test Requirement:
9.3.1 Product furnished to this specification shall conform to the elongation requirements prescribed in Tables 2 and 3 for the
temper and alloy specified in the ordering information when tested in accordance with Test Methods E8/E8M.
9.4 Acceptance or rejection based upon mechanical properties shall depend only on tensile strength and elongation.
10. Dimensions, Mass, and Permissible Variations
10.1 Unless closer tolerances are specified in the contract or purchase order, the product furnished shall conform to the
following thickness and width tolerances:
10.1.1 Thickness Tolerances—Table 4.
10.1.2 Width Tolerances—Table 5.
10.2 Straightness Tolerances—The maximum edgewise curvature (depth of arc) in any 72-in. (1829-mm) 72 in. (1829 mm)
continuous length shall not exceed ⁄8 in. (3.175 mm).
11. Workmanship, Finish, and Appearance
11.1 The strip shall be free of defects, but blemishes of a nature that do not interfere with normal commercial operations are
acceptable. It shall be well-cleaned well cleaned and free of dirt. A superficial film of residual light lubricant may be present and
is acceptable unless otherwise specified.
TABLE 4 Thickness Tolerances
A,B
Thickness Tolerance, ±in. (mm),
Thickness, in. (mm)
3 in. (7.62 mm) and Under in Width
0.006 (0.152) and under 0.0003 (0.008)
Over 0.006 to 0.009 (0.152 to 0.229) 0.0004 (0.010)
Over 0.009 to 0.018 (0.229 to 0.457) 0.0005 (0.013)
A
When tolerances are specified as all plus or minus, double the values shown.
B
Some applications may require a closer tolerance control within any one coil
even though the overall tolerance between coils or shipments can be to the
tolerance shown. Such special tolerance requirements shall be negotiated be-
tween the manufacturer or supplier and the purchaser at the time the order is
placed.
B569 − 19
TABLE 5 Width Tolerances for Slit Metal
A,B
Width Tolerances, ±in. (mm),
Width, in. (mm) for Thicknesses 0.018 in. (0.457
mm) and Under
1.750 (44.45) and under 0.003 (0.08)
Over 1.750 to 3 (44.5 to 76.2) 0.005 (0.13)
A
When tolerances are specified as all plus or minus, double the values shown.
B
Some applications may require a closer tolerance control within any one coil
even though the overall tolerance between coils or shipments can be to the
tolerance shown. Such special tolerance requirements shall be negotiated be-
tween the manufa
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