ASTM A987/A987M-19
(Practice)Standard Practice for Measuring Shape Characteristics of Tin Mill Products
Standard Practice for Measuring Shape Characteristics of Tin Mill Products
SIGNIFICANCE AND USE
4.1 The definitions and procedures for measuring shape characteristics of tin mill products are provided so that purchasers and suppliers have common measuring procedures and definitions of shape characteristics. These procedures provide definitions and measuring techniques of shape characteristics. The intention of these definitions and measuring practices is not to provide a dimensional specification for shape characteristics, but rather common procedure(s) for quantifying shape anomalies.
SCOPE
1.1 Shape is a significant quality characteristic for tin mill products. Plate-shape is affected by mill process factors plus the temper, thickness, and width of the material supplied. It is the purpose of this practice to define accurately the different plate shape characteristics and to describe the practice(s) most commonly used to measure particular characteristics.
1.2 Quantitative limits are not addressed and should be established on an individual producer and user basis, where appropriate.
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
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, 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.
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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.
Designation: A987/A987M − 19
Standard Practice for
1
Measuring Shape Characteristics of Tin Mill Products
This standard is issued under the fixed designationA987/A987M; 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* A623M Specification for Tin Mill Products, General Re-
quirements [Metric]
1.1 Shape is a significant quality characteristic for tin mill
A624/A624M Specification for Tin Mill Products, Electro-
products. Plate-shape is affected by mill process factors plus
lytic Tin Plate, Single Reduced
the temper, thickness, and width of the material supplied. It is
A625/A625M Specification for Tin Mill Products, Black
the purpose of this practice to define accurately the different
Plate, Single-Reduced
plate shape characteristics and to describe the practice(s) most
A626/A626M Specification for Tin Mill Products, Electro-
commonly used to measure particular characteristics.
lytic Tin Plate, Double Reduced
1.2 Quantitative limits are not addressed and should be
A650/A650M Specification for Tin Mill Products, Black
established on an individual producer and user basis, where
Plate, Double Reduced
appropriate.
A657/A657M Specification for Tin Mill Products, Black
Plate Electrolytic Chromium-Coated, Single and Double
1.3 Units—The values stated in either SI units or inch-
pound units are to be regarded separately as standard. The Reduced
values stated in each system are not necessarily exact equiva-
lents; therefore, to ensure conformance with the standard, each 3. Classification
system shall be used independently of the other, and values
3.1 The substrate shall conform to all the requirements of
from the two systems shall not be combined.
the appropriate specifications as follows: Specifications A623,
1.4 This standard does not purport to address all of the
A623M, A599/A599M, A624/A624M, A625/A625M, A626/
safety concerns, if any, associated with its use. It is the
A626M, A650/A650M, and A657/A657M.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
4. Significance and Use
mine the applicability of regulatory limitations prior to use.
4.1 The definitions and procedures for measuring shape
1.5 This international standard was developed in accor-
characteristics of tin mill products are provided so that pur-
dance with internationally recognized principles on standard-
chasers and suppliers have common measuring procedures and
ization established in the Decision on Principles for the
definitions of shape characteristics. These procedures provide
Development of International Standards, Guides and Recom-
definitions and measuring techniques of shape characteristics.
mendations issued by the World Trade Organization Technical
The intention of these definitions and measuring practices is
Barriers to Trade (TBT) Committee.
not to provide a dimensional specification for shape
2. Referenced Documents characteristics, but rather common procedure(s) for quantify-
ing shape anomalies.
2
2.1 ASTM Standards:
A599/A599M Specification for Tin Mill Products, Electro-
5. Interferences
lytic Tin-Coated, Cold-Rolled Sheet
A623 Specification for Tin Mill Products, General Require-
5.1 Measurementofshapeoftenhasbeensubjective,atbest.
ments Successful measurement of various shape anomalies on quan-
titative terms requires recognition of several factors that can
1
This practice is under the jurisdiction of ASTM Committee A01 on Steel, interfere with accurate measurements.
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
5.1.1 Flat surfaces are required. Measurement of several
A01.20 on Tin Mill Products.
anomalies require laying of the sample on a flat surface. A
Current edition approved Nov. 1, 2019. Published November 2019. Originally
machined flat surface is recommended. Laying a sample on a
approved in 1998. Last previous edition approved in 2014 as A987/
A987M – 09(2014). DOI: 10.1520/A0987_A0987M-19.
floor may introduce error due to areas on a floor that are not
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
flat.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1.2 Several anomalies are measured by hanging the sheet.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Hanging by holding the sample with a hand can introduce error
*A Summary of Changes section appears at the e
...
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: A987/A987M − 09 (Reapproved 2014) A987/A987M − 19
Standard Practice for
1
Measuring Shape Characteristics of Tin Mill Products
This standard is issued under the fixed designation A987/A987M; 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 Shape is a significant quality characteristic for tin mill products. Plate-shape is affected by mill process factors plus the
temper, thickness, and width of the material supplied. It is the purpose of this practice to define accurately the different plate shape
characteristics and to describe the practice(s) most commonly used to measure particular characteristics.
1.2 Quantitative limits are not addressed and should be established on an individual producer and user basis, where appropriate.
1.3 Units—The values stated in either in-pound or SI units or inch-pound units are to be regarded as standard. Within the text,
the SI units are shown in brackets. separately as standard. The values stated in each system must are not necessarily exact
equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other.
Combiningother, and values from the two systems may result in nonconformance with this specification.shall not be combined.
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 to 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
2.1 ASTM Standards:
A599/A599M Specification for Tin Mill Products, Electrolytic Tin-Coated, Cold-Rolled Sheet
A623 Specification for Tin Mill Products, General Requirements
A623M Specification for Tin Mill Products, General Requirements [Metric]
A624/A624M Specification for Tin Mill Products, Electrolytic Tin Plate, Single Reduced
A625/A625M Specification for Tin Mill Products, Black Plate, Single-Reduced
A626/A626M Specification for Tin Mill Products, Electrolytic Tin Plate, Double Reduced
A650/A650M Specification for Tin Mill Products, Black Plate, Double Reduced
A657/A657M Specification for Tin Mill Products, Black Plate Electrolytic Chromium-Coated, Single and Double Reduced
3. Classification
3.1 The substrate shall conform to all the requirements of the appropriate specifications as follows: Specifications A623,
A623M, A599/A599M, A624/A624M, A625/A625M, A626/A626M, A650/A650M, and A657/A657M.
4. Significance and Use
4.1 The definitions and procedures for measuring shape characteristics of tin mill products are provided so that purchasers and
suppliers have common measuring procedures and definitions of shape characteristics. These procedures provide definitions and
measuring techniques of shape characteristics. The intention of these definitions and measuring practices is not to provide a
dimensional specification for shape characteristics, but rather common procedure(s) for quantifying shape anomalies.
1
This practice is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.20
on Tin Mill Products.
Current edition approved Oct. 1, 2014Nov. 1, 2019. Published November 2014November 2019. Originally approved in 1998. Last previous edition approved in 20092014
as A987 - 09.A987/A987M – 09(2014). DOI: 10.1520/A0987_A0987M-09R14.10.1520/A0987_A0987M-19.
2
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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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A987/A987M − 19
5. Interferences
5.
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