Standard Specification for Tin Mill Products, Electrolytic Tin Plate, Double Reduced

ABSTRACT
This specification covers double-reduced electrolytic tin plate produced from low-carbon cold-reduced steel furnished in coils and cut sizes for use predominately in the manufacture of cans. Double-reduced plate is relatively brittle and has very distinct directional properties. The rolling direction shall be specified on cut sizes and will be indicated by underlining the slit (rolling width) dimension. In sampling for tin coating weights [masses], the following procedure shall be used: a test strip shall be taken at random from a representative section of each coil across its width; from one or two coil lots, each coil shall be sampled; and a sheet shall be taken at random from each packages, each taken from different bundles from any one item of a specific shipment. X-ray fluorescence method shall be performed to determine the tin coating weight. Surface appearance shall be bright or matte depending on coating processes and the base metal finish shall have a smooth finish with grit lines. Chemical treatments for tin plate shall be cathodic sodium dichromate (CDC) treatment or sodium dichromate dip (SDCD/SDD) treatment. Electrolytic tin plate is furnished with an oil film applied to both surfaces.
SCOPE
1.1 This specification covers double-reduced electrolytic tin plate produced from low-carbon cold-reduced steel furnished in coils and cut sizes for use predominately in the manufacture of cans. It is furnished in commercially available tin coating weights [masses] and is normally supplied with a trimmed edge.
1.2 This specification is applicable to orders in either inch-pound units (as A 626) which is supplied in thicknesses from 0.0050 to 0.0118 in. or SI units [as A 626M] which is supplied in thicknesses from 0.127 to 0.300 mm.
1.3 The values stated in either inch-pound or SI units are to be regarded as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents. Therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.
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 and health practices and determine the applicability of regulatory limitations prior to use.

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30-Sep-2003
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ASTM A626/A626M-03 - Standard Specification for Tin Mill Products, Electrolytic Tin Plate, Double Reduced
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A 626/A 626M – 03
Standard Specification for
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Tin Mill Products, Electrolytic Tin Plate, Double Reduced
This standard is issued under the fixed designationA 626/A 626M; 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.
1. Scope* 3. Ordering Information
1.1 This specification covers double-reduced electrolytic tin 3.1 Orders for product under this specification shall include
plate produced from low-carbon cold-reduced steel furnished the following information, as required and applicable, to
in coils and cut sizes for use predominately in the manufacture describe adequately the desired product:
of cans. It is furnished in commercially available tin coating 3.1.1 Name of product (double-reduced electrolytic tin
weights [masses] and is normally supplied with a trimmed plate) (Section 1),
edge. 3.1.2 Tincoatingweight[mass]designation,andmarking,if
1.2 This specification is applicable to orders in either any (Section 5, Table 1, and Fig. 1 and Fig. 2),
inch-pound units (as A 626) which is supplied in thicknesses 3.1.3 Surface appearance and finish (Section 6),
from 0.0050 to 0.0118 in. or SI units [as A 626M] which is 3.1.4 Chemical treatment (Section 7),
supplied in thicknesses from 0.127 to 0.300 mm. 3.1.5 Oiling (Section 8),
1.3 The values stated in either inch-pound or SI units are to 3.1.6 Thickness (SpecificationA 623 [A 623M]) (consistent
be regarded as standard.Within the text, the SI units are shown with the intended application),
1
in brackets. The values stated in each system are not exact 3.1.7 Coilwidthorcutsizeinincrementsof ⁄16in.or1mm,
equivalents. Therefore, each system must be used indepen- 3.1.8 Due to the very distinct directional properties, rolling
dently of the other. Combining values from the two systems direction must be specified on cut sizes by underlining the slit
may result in nonconformance with this specification. (rolling width) dimension (Section 4) (consistent with the
1.4 This standard does not purport to address all of the intended application),
safety concerns, if any, associated with its use. It is the 3.1.9 Steel type (Specification A 623 [A 623M]),
responsibility of the user of this standard to establish appro- 3.1.10 Mechanical requirement designation (Specification
priate safety and health practices and determine the applica- A 623 [A 623M]) (consistent with the intended application),
bility of regulatory limitations prior to use. 3.1.11 Intended application,
3.1.12 Quantity in base boxes SITAS (see Note 4),
2. Referenced Documents
3.1.13 On coils, specify minimum or range of acceptable
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2.1 ASTM Standards: inside diameters. The standard inside diameter is approxi-
A 623 SpecificationforTinMillProducts,GeneralRequire-
mately 16 in. if ordered to Specification A 626 [410 mm if
ments ordered to SpecificationA 626M]. Coils should be specified to
A 623M Specification for Tin Mill Products, General Re-
amaximumcoilweightiforderedtoSpecificationA 626[mass
quirements [Metric] if ordered to Specification A 626M] or maximum outside
A 630 Test Methods for Determination of Tin Coating
diameter, or both,
Weights for Hot-Dip and Electrolytic Tin Plate 3.1.14 Packaging,
A 754 Test Method for Coating Thickness by X-Ray Fluo-
3.1.15 Special requirements, where applicable (J = plate or
rescence K = plate), and
B 339 Specification for Pig Tin
3.1.16 ASTM specification number and year of issue.
NOTE 1—Atypical ordering description is as follows: 1000 base boxes,
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double-reduced electrolytic tin plate, D 50/25, melted, CDC, DOS,
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
0.0066-in. thickness, 30 by coil, MR, DR-8 CA, for 307 by 401 welded
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.20 on Tin Mill Products. can bodies in accordance with Specification A 626/A 626M - XX. [250
Current edition approved October 1, 2003. Published December 2003. Originally
SITAS, double-reduced electrolytic tin plate, D 5.6/2.8, melted, CDC,
approved in 1968. Last previous edition approved in 1998 as A 626/A 626M - 98.
DOS, 0.17-mm thickness, 760 by coil, MR, DR-8, for 99 by 105 mm
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
welded can bodies to Specification A 626/A 626M - XX.]
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
NOTE 2—Atypical ordering description for cut sizes is as follows: 500
Standards volume information, refer to the standard’s Document Summary page on
base boxes, single reduced el
...

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