ASTM B506-22

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.
Designation: B506 − 16 B506 − 22
Standard Specification for
Copper-Clad Stainless Steel Sheet and Strip for Building
Construction
This standard is issued under the fixed designation B506; 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 rolled copper-clad stainless steel, sheet and strip in flat lengths, coils, or in
rolls in thicknesses for roofing, siding, flashing, rain drainage, windows, doors, curtain wall components, and for other architectural
gutters, downspouts, and general sheet metal work and fabricated products in building and for outside building construction.
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 whichthat are provided for information only and are not considered standard.
1.2.1 Exception—Grain size units are stated in SI units.
1.3 The following safety hazard caveat pertains only to the test method(s) described in this specification.
1.3.1 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4
1.4 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:
A240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and
for General Applications
B152/B152M Specification for Copper Sheet, Strip, Plate, and Rolled Bar
B846 Terminology for Copper and Copper Alloys
E3 Guide for Preparation of Metallographic Specimens
E8/E8M Test Methods for Tension Testing of Metallic Materials
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 July 1, 2016May 1, 2022. Published July 2016May 2022. Originally approved in 1970. Last previous edition approved in 20092016 as
B506-09.-16. DOI: 10.1520/B0506-16.10.1520/B0506-22.
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
B506 − 22
E18 Test Methods for Rockwell Hardness of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E112 Test Methods for Determining Average Grain Size
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 product under this specification, as applicable:
4.1.1 ASTM designation and year of issue,
4.1.2 UNS No. designations of both the copper and stainless steel specified,
4.1.3 Temper (see 7.1),
4.1.4 Dimensions: thickness, width, and length (see 10.2, 10.3, and 10.4),
4.1.5 How Furnished: flat lengths or rolls,
4.1.6 Quantity: total weight or total length or number of pieces of each size, and
4.1.7 Cladding ratio (see 6.3).
4.2 The following options are available but may not be included unless and, when required, shall be specified at the time of placing
of the order when required:order:
4.2.1 Heat identification or traceability details,
4.2.2 Certification, and
4.2.3 Test Report.
5. Materials and Manufacture
5.1 Material:
5.1.1 The material of manufacture shall be a form of sheet or strip 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 that heat identification or traceability is required, the purchaser shall specify
the details desired.
B506 − 22
NOTE 1—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 shall be produced by roll bonding the cladding metals to the specified base metal (core), and subsequently
annealed, when required, to meet the temper properties specified.
6. Chemical Composition
6.1 The cladding shall be, unless otherwise specified, a copper conforming in chemical composition to any of those established
in Specification B152/B152M.
6.2 The core shall be a stainless steel conforming in chemical composition to any of those established by Specification
A240/A240M. Unless otherwise specified, stainless steel UNS Alloy No. S43000 shall be supplied.
6.3 The cladding ratio shall be 10/80/10, copper/stainless steel/copper, unless otherwise specified.
7. Temper
7.1 The standard temper for the product described in this specification is given in Table 1, unless otherwise specified.
7.1.1 Annealed temper O61.
8. Grain Size
8.1 Although no minimum grain size is prescribed for annealed material, it shall be fully recrystallized in both cladding and core.
9. Mechanical Property Requirements
9.1 Tensile Strength Requirements:
9.1.1 Product furnished under this specification shall conform to the tensile requirements prescribed in Table 1 when tested in
accordance with Test Methods E8/E8M.
9.1.2 Acceptance or rejection based upon mechanical properties shall depend only on tensile properties.and yield strength
requirements.
9.1.3 The mechanical properties of material in tempers other than annealed and with cladding ratios other than 10/80/10 shall be
as agreed upon between purchaser and supplier.
9.2 Rockwell Hardness Requirement:
9.2.1 The approximate Rockwell hardness values given in Table 1 are for general information and assistance in testing, and shall
not be used as a basis for product rejection.
9.2.2 Copper should be etched off with a suitable reagent prior to test.
TABLE 1 Mechanical Properties for 10/80/10 Ratio Composite Strip Material with Type 430 Stainless Steel Core
Yield Strength at 0.5 % Extension Approximate
Temper Designation
Tensile Strength
Under Load Rockwell Hardness
A B
ksi (MPa )
A B
ksi (MPa ) (for Information Only)
Code Name
Min Max Min Max 15T
O61 annealed 58 (400) 70 (485) 30 (205) 51 (350) 89 max
A
ksi = 1000 psi
B
See Appendix X1.
B506 − 22
NOTE 2—The Rockwell Hardness test offers a quick and convenient method of checking for general conformity to the specification requirements for
temper and tensile strength.
10. Dimensions and Permissible Variations
10.1 Unless closer tolerances are specified in the contract or purchase order, the product furnished shall conform to the following
appropriate tables:
10.2 Thickness Tolerances—Table 2.
10.3 Width Tolerances—Table 3 for slit metal and Table 4 for square-sheared metal.
10.4 Length Tolerances—Table 5 for stock lengths of flat sheet and strip. Table 6 for square-sheared metal.
10.5 Straightness Tolerances—Table 7 for slit metal. Table 8 for square-sheared metal.
10.6 Cladding Ratio—Cladding ratios shall be within 610 % of nominal; method of test shall be metallurgical microsection of
at least three samples per lot.
11. Workmanship, Finish, and Appearance
11.1 The material shall be free of defects, but blemishes of a nature that do not interfere with the intended application are
acceptable.
12. Sampling
12.1 Sampling—The lot size, portion size, and selection of sample pieces shall be as follows:
12.1.1 Lot Size—An inspection lot shall be 10 000 lb (4550 kg), or less material of the same mill form, alloy, temper, and
thickness, subject to inspection at one time.
12.1.2 Portion Size—A portion shall be four or more pieces selected as to be representative of each lot. If the lot consists of less
than four pieces, a sample shall be taken from each piece.
12.1.2.1 Chemical Analysis—A sample for chemical analysis shall not be taken. The copper sheet or strip that is used as the
cladding for this product was sampled and tested as prescribed in Specification B152/B152M. The stainless steel strip that is used
as the core in this product was sampled and tested as prescribed in Specification A240/A240M.
TABLE 2 Thickness Tolerances
Thickness, in. (mm) Thickness Tolerances, Plus and Minus
For Widths For Widths
For Widths
Over 88 in. to 14 in. Over 1414 in. to 20 in. For Widths
8 in. and Under
(203(203 mm to 356 mm), (356(356 mm to 508 mm), Over 20 in. (508 mm)
(203 mm and Under)
incl incl
in. (mm) in. (mm) in. (mm) in. (mm)
0.012 in. (0.305 mm) to
0.018 in. (0.457 mm), 0.0010 (0.025) 0.0015 (0.038) 0.0020 (0.051) 0.0025 (0.064)
incl
Over 0.018 in. (0.457 mm) to
0.022 in. (0.559 mm), 0.0013 (0.033) 0.0018 (0.04
...