ASTM B69-21

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: B69 − 20 B69 − 21
Standard Specification for
Rolled Zinc
This standard is issued under the fixed designation B69; 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*
1.1 This specification covers two types of commercial rolled zinc as described in 1.2. It should be understood that the specification
is general. Any closer limitations on permissible variations shall be a matter of agreement between the supplier (manufacturer) and
the purchaser.
1.2 Rolled zinc is furnished in two types as follows:
1.2.1 Type A—Coils or sheets cut from strip (ribbon) rolled zinc and
1.2.2 Type B—Zinc plates such as boiler and hull plates produced by any rolling method.
1.3 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.
1.4 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet
(SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental
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 The issue of each of the following reference documents shall be that which is current on the date the purchase order is accepted
by the supplier (manufacturer).
2.2 ASTM Standards:
B899 Terminology Relating to Non-ferrous Metals and Alloys
E8 Test Methods for Tension Testing of Metallic Materials [Metric] E0008_E0008M
E18 Test Methods for Rockwell Hardness of Metallic Materials
This specification is under the jurisdiction of ASTM Committee B02 on Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee B02.04 on Zinc
and Cadmium.
Current edition approved Oct. 1, 2020Nov. 1, 2021. Published October 2020December 2021. Originally approved in 1926. Last previous edition approved in 20162020
as B69 – 16.B69 – 20. DOI: 10.1520/B0069-20.10.1520/B0069-21.
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’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
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B69 − 21
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E55 Practice for Sampling Wrought Nonferrous Metals and Alloys for Determination of Chemical Composition
E60 Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry
E88 Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical Composition
E384 Test Method for Microindentation Hardness of Materials
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E536 Test Methods for Chemical Analysis of Zinc and Zinc Alloys
E634 Practice for Sampling of Zinc and Zinc Alloys for Analysis by Spark Atomic Emission Spectrometry
2.3 ISO Standards:
ISO 3815-1 Zinc and zinc alloys—Part 1: Analysis of solid samples by optical emission spectrometry
ISO 3815-2 Zinc and zinc alloys—Part 2: Analysis by inductively coupled plasma optical emission spectrometry
3. Terminology
3.1 Terms shall be defined in accordance with Terminology B899.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 architectural rolled zinc, Type 1, n—a lower copper composition architectural zinc that exhibits different properties than Type
2.
3.2.2 architectural rolled zinc, Type 2, n—a higher copper composition architectural zinc that exhibits different properties than
Type 1.
3.2.3 coiled sheet, n—sheet coils with either slit or unslit edges.
3.2.4 flat sheet, n—sheet with sheared, slit, or sawed edges that has been flattened or leveled.
3.2.5 plate, n—rolled product, rectangular in cross section and form, or thickness of more than 0.125 in. (3.175 mm) with either
untrimmed, sheared or sawed edges.
3.2.6 rolled zinc, n—wrought zinc or zinc alloy sheet, strip, or plate produced by hot and/or cold rolling.
3.2.7 sheet, n—rolled product, rectangular in cross section and form of thickness of 0.003 in. (0.076 mm) through 0.125 in. (3.175
mm) with sheared, slit, untrimmed or sawed edges.
4. Ordering Information
4.1 Orders for materials under this specification shall include the following information:
4.1.1 ASTM designation and year of issue,
4.1.2 Quantity (weight),
4.1.3 Name of material (rolled zinc),
4.1.4 Type of rolled zinc:
4.1.4.1 Form designated as Type A or Type B,
4.1.4.2 and if an architectural grade identified as Type 1 or Type 2,
4.1.5 Dimensions (thickness, width, length, or coil),
4.1.6 Chemical composition/alloy, and
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
B69 − 21
4.1.7 Others as agreed upon between the purchaser and the supplier.
5. Materials and Manufacture
5.1 The supplier (manufacturer) shall ensure that each rolled zinc product:
(a) conforms to the chemical composition specified in the purchase order,
(b) is free of deleterious inclusions, and
(c) is of satisfactory appearance.
The products covered by this specification shall be produced by casting, rolling, and other processes found in a mill product
plant.
6. Chemical Composition
6.1 Alloys—The material shall conform to the chemical requirements prescribed in Table 1.
7. Mechanical Properties
7.1 The material shall conform to the mechanical property requirements in the longitudinal rolling direction in Table 2.
7.1.1 The testing of wrought zinc for determination of tensile properties shall be conducted in accordance with Test Methods E8,
with the additional recommendation that the rate of separation of the heads during a test be maintained between 0.115 to 0.135
in./in./min (0.115 to 0.135 mm/mm/min) at room temperature (68 to 75°F (20 to 24°C) suggested).
7.1.2 The testing of zinc for hardness shall be made on a Rockwell superficial hardness tester set up for the 15T scale, in
accordance with Test Methods E18, or on a microhardness tester, in accordance with Test Method E384. Zinc is a time dependent
material; therefore, the dwell time of the major load shall be specified between supplier and customer, for example, 4 to 15 s.
8. Dimensions and Permissible Variations
8.1 Thickness—The permissible variations in thickness of rolled zinc shall be as specified in Table 3, along the length of the coil
shall be made within 12 in. (305 mm) of each other, nor shall measurement in any one line across the width of the coil be used
as a basis of rejection.
8.2 Width—The permissible variations in width of all types of rolled zinc shall be as specified in Table 4.
8.3 Length—The permissible variations in length in all types of rolled zinc shall be as follows: sheets, strips, and plates may be
ordered to exact lengths with the following variations in length permitted, 60.125 in. (3.2 mm), or to a tolerance range agreed to
by buyer and seller. For Architectural Rolled Zinc (ZXXXXX), (Z41110 and Z41310), the permissible variation in length is 60.2
in. (65 mm).
8.4 Sidewise Bend and Curvature (Camber)—Type I rolled zinc in lengths over 10 ft (3048 mm) shall not exhibit sidewise bend
or curvature in excess of 1 in. (25.4 mm) in any length of 10 ft, or to a tolerance range agreed to by buyer and seller.
9. Workmanship, Finish, and Appearance
9.1 The material shall be uniform in quality and finish, commercially straight or flat, and free of injurious imperfections.
10. Sampling
10.1 The sampling plan for zinc for purposes of chemical analysis or mechanical property testing shall be designed such that any
lot of finished product may be adequately described by the results of the tests performed on the samples. Lot or portion size shall
be as agreed upon between purchaser and supplier.
11. Chemical Analysis
11.1 Samples for chemical analysis shall be taken in accordance with 10.1 and 11.2, 11.2.1 or 11.2.3 according to the form of zinc
and zinc alloy to be analyzed and the analys
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