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

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 The following safety hazards caveat pertains to 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 and health practices and determine the applicability of regulatory limitations prior to use.
Note 1—This metric specification is equivalent to Specification A 623 and is compatible in technical content.

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ASTM A623M-02 - Standard Specification for Tin Mill Products, General Requirements [Metric]
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: A 623M – 02
METRIC
Standard Specification for
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Tin Mill Products, General Requirements [Metric]
This standard is issued under the fixed designation A 623M; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
INTRODUCTION
This specification is the metric counterpart of Specification A 623. It is not intended to replace
A 623. 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.
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(2) The metric product is designated in units of 100 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 A 623 to A 623M.
1. Scope 2. Referenced Documents
1.1 This specification covers a group of common require- 2.1 ASTM Standards:
ments which, unless otherwise specified in the purchase order A 370 Test Methods and Definitions for Mechanical Testing
2
or in an individual specification, shall apply to tin mill of Steel Products
products. A 700 Practices for Packaging, Marking, and Loading
3
1.2 The following safety hazards caveat pertains to Annex Methods for Steel Products for Domestic Shipment
A1 through Annex A8 of this specification: This standard does A 987 Test Method for Measuring Shape Characteristics of
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not purport to address all of the safety concerns, if any, Tin Mill Products
associated with its use. It is the responsibility of the user of this E 18 Test Methods for Rockwell Hardness and Rockwell
5
standard to establish appropriate safety and health practices Superficial Hardness of Metallic Materials
and determine the applicability of regulatory limitations prior E 112 Test Methods for Determining the Average Grain
5
to use. Size
2.2 Military Standards:
NOTE 1—This metric specification is equivalent to Specification A 623
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MIL-STD-129 Marking for Shipment and Storage
and is compatible in technical content.
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Annual Book of ASTM Standards, Vol 01.03.
1 3
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Annual Book of ASTM Standards, Vol 01.05.
4
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee Annual Book of ASTM Standards, Vol 01.06.
5
A01.20 on Tin Mill Products. Annual Book of ASTM Standards, Vol 03.01.
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Current edition approved May 10, 2002. Published July 2002. Originally Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
published as A 623M – 78. Last previous edition A 623M – 00. 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.
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
A 623M
MIL-STD-163 Steel Mill Products, Preparation for Marking A4), Tin Crystal Size (TCS) (see Annex A3). The alloy layer is
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and Storage normally light in color, characteristic of the acid tinning
2.3 Federal Standard: process.
2
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Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
3.1.13.2 K Plate, n—electrolytic tin plate, 5.6/2.8 g/m or
heavier tin coating, with improved corrosion performance for
3. Terminology
some galvanic detinning food products as specified in the
3.1 Definitions:
following table and as measured by the Special Property Tests
3.1.1 black plate, n—light-gage, low-carbon, cold-reduced
for Pickle Lag (PL) (see Annex A2), Iron Solution Value (ISV)
steel intended for use in the untinned state or for the production
(see Annex A4), Tin Crystal Size (TCS) (see Annex A3), Alloy
of other tin mill products. It is supplied only in a dry or oiled
Tin Couple (ATC) (see Annex A5) and Aerated Media Polar-
condition.
ization Test (AMP) (see Annex A8).
3.1.2 box annealing, n—a process involving slow heating o
...

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