ASTM A623M-22

Standard Specification for Tin Mill Products, General Requirements [Metric]

ABSTRACT
This specification covers a group of common requirements which shall apply to tin mill products. The steel shall be made by the open-hearth, electric-furnace, or basic-oxygen process. The steel shall conform to specified chemical composition requirements. Rockwell 30T hardness test shall be done to the plates. This test forms the basis for a system of temper designation. The mechanical properties of continuously annealed plate and batch annealed plate of the same Rockwell 30T temper designation are not identical. It is important to keep in mind, that the Rockwell 30T test does not measure all various factors which contribute to the fabrication characteristics of the plate.
SCOPE
1.1 This specification covers a group of common requirements, which unless otherwise specified in the purchase order or in an individual specification, shall apply to tin mill products.  
1.2 In case of conflict in requirements, the requirements of the purchase order, the individual material specification, and this general specification shall prevail in the sequence named.
Note 1: A complete inch-pound companion to Specification A623M has been developed—Specification A623; therefore, no inch-pound equivalents are presented.  
1.3 The following safety hazards caveat covers Annex A1 through Annex A8 of this specification: 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.  
1.4 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.

General Information

• Status: Published
• Publication Date: 28-Feb-2022
• ICS: 77.140.50 - Flat steel products and semi-products
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.20 - Tin Mill Products

Standards Content (Sample)

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:A623M −22
Standard Specification for
1
Tin Mill Products, General Requirements [Metric]
This standard is issued under the fixed designation A623M; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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.
INTRODUCTION
ThisspecificationisthemetriccounterpartofSpecificationA623.ItisnotintendedtoreplaceA623.
Users of the standard should note several very significant differences in how the product is produced
and marketed.
(1)Themetricproductdoesnotcarrytheoverrunassociatedwithtinmillproductsproducedtocustomaryunits.Metrictinmill
products are produced to ordered size.
2
(2)The metric product is designated in units of 100m called a SITA(System InternationalTinplateArea), rather than in base
boxes.
(3) The metric product is designated by thickness in millimetres rather than by basis weight.
(4) Coating weights are given in grams per square metre, not pounds per base box.
(5)Thickness tolerances are given in absolute figures instead of a 6 percentage.
(6) Each package of metric tin mill products contains 100 sheets, not the 112 of customary unit packages.
All of the above significant differences, as well as others of lesser consequence, should be considered when switching from
Specification A623 to Specification A623M.
1. Scope ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
1.1 This specification covers a group of common
mendations issued by the World Trade Organization Technical
requirements,whichunlessotherwisespecifiedinthepurchase
Barriers to Trade (TBT) Committee.
order or in an individual specification, shall apply to tin mill
products.
2. Referenced Documents
1.2 In case of conflict in requirements, the requirements of
2
2.1 ASTM Standards:
the purchase order, the individual material specification, and
A370Test Methods and Definitions for Mechanical Testing
this general specification shall prevail in the sequence named.
of Steel Products
NOTE 1—A complete inch-pound companion to Specification A623M A623Specification for Tin Mill Products, General Require-
has been developed—Specification A623; therefore, no inch-pound
ments
equivalents are presented.
A700Guide for Packaging, Marking, and Loading Methods
1.3 The following safety hazards caveat covers Annex A1
for Steel Products for Shipment
throughAnnexA8ofthisspecification: This standard does not
A987Practice for Measuring Shape Characteristics of Tin
purport to address all of the safety concerns, if any, associated
Mill Products
with its use. It is the responsibility of the user of this standard
E18Test Methods for Rockwell Hardness of Metallic Ma-
to establish appropriate safety, health, and environmental
terials
practices and determine the applicability of regulatory limita-
E112Test Methods for Determining Average Grain Size
tions prior to use. 3
2.2 Military Standards:
1.4 This international standard was developed in accor-
MIL-STD-129Marking for Shipment and Storage
dance with internationally recognized principles on standard-
1 2
This specification is under the jurisdiction ofASTM Committee A01 on Steel, For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
A01.20 on Tin Mill Products. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved March 1, 2022. Published April 2022. Originally the ASTM website.
3
approved in 1978. Last previous edition approved in 2016 as A623M–16. DOI: AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
10.1520/A0623M-22. Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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A623M−22
MIL-STD-163 SteelMillProducts,PreparationforMarking 3.1.13 electrolytic tin plate, n—light-gage, low-carbon,
and Storage cold-reduced steel on which tin has been electrodeposited by
3 an acid or alkaline process.
2.3 Federal Standard:
2
Fed. Std. No. 123Marking for Shipment (Civil Agencies) 3.1.13.1 J Plate, n—electrolytic tin plate, 5.6/2.8g⁄m or
heavier tin coating, with improved corrosion performance for
3. Terminology some galvanic det
...

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: A623M − 16 A623M − 22
Standard Specification for
1
Tin Mill Products, General Requirements [Metric]
This standard is issued under the fixed designation A623M; 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.
INTRODUCTION
This specification is the metric counterpart of Specification A623. It is not intended to replace A623.
Users of the standard should note several very significant differences in how the product is produced
and marketed.
(1) The metric product does not carry the overrun associated with tin mill products produced to customary units. Metric tin mill
products are produced to ordered size.
2
(2) The metric product is designated in units of 100 m100 m called a SITA (System International Tinplate Area), rather than
in base boxes.
(3) The metric product is designated by thickness in millimetres rather than by basis weight.
(4) Coating weights are given in grams per square metre, not pounds per base box.
(5) Thickness tolerances are given in absolute figures instead of a 6 percentage.
(6) Each package of metric tin mill products contains 100 sheets, not the 112 of customary unit packages.
All of the above significant differences, as well as others of lesser consequence, should be considered when switching from
Specification A623 to Specification A623M.
1. Scope
1.1 This specification covers a group of common requirements, which unless otherwise specified in the purchase order or in an
individual specification, shall apply to tin mill products.
1.2 In case of conflict in requirements, the requirements of the purchase order, the individual material specification, and this
general specification shall prevail in the sequence named.
NOTE 1—A complete inch-pound companion to Specification A623M has been developed—Specification A623; therefore, no inch-pound equivalents are
presented.
1.3 The following safety hazards caveat covers Annex A1 through Annex A8 of this specification: 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.
NOTE 1—A complete inch-pound companion to Specification A623M has been developed—A623; therefore, no inch-pound equivalents are presented.
1
This specification 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 Dec. 1, 2016March 1, 2022. Published December 2016April 2022. Originally approved in 1978. Last previous edition approved in 20112016
as A623M – 11.A623M – 16. DOI: 10.1520/A0623M-16.10.1520/A0623M-22.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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A623M − 22
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
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A623 Specification for Tin Mill Products, General Requirements
A700 Guide for Packaging, Marking, and Loading Methods for Steel Products for Shipment
A987 Practice for Measuring Shape Characteristics of Tin Mill Products
E18 Test Methods for Rockwell Hardness of Metallic Materials
E112 Test Methods for Determining Average Grain Size
3
2.2 Military Standards:
MIL-STD-129 Marking for Shipment and Storage
MIL-STD-163 Steel Mill Products, Preparation for Marking and Storage
3
2.3 Federal Standard:
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
3. Terminology
3.1 Definitions:
3.1.1 black plate, n—light-gage, low-carbon, cold-reduced steel intended for use in the untinned state or for the production of other
tin mill products. It is supplied only in a dry or oiled condition.
3.1.2 box annealing, n—a
...