ASTM A599/A599M-07(2012)
(Specification)Standard Specification for Tin Mill Products, Electrolytic Tin-Coated, Cold-Rolled Sheet
Standard Specification for Tin Mill Products, Electrolytic Tin-Coated, Cold-Rolled Sheet
ABSTRACT
This specification covers cold-rolled steel sheet in coils or in cut lengths, tin-coated by electrodeposition. The product is commonly known as electrolytic tin-coated sheet, and is for applications that need good solderability, good surface appearance, and a degree of corrosion resistance. The material shall conform to specified chemical composition requirements. The mechanical property requirements for structural steel, high-strength low-alloy steel with and without improved formability, commercial steel, and deep drawing steel are presented in details. The weight [mass] of coating shall conform to specified requirements fit for individual coating designations. The typical methods for determination of tin coating weights are described.
SCOPE
1.1 This specification covers cold-rolled steel sheet in coils or in cut lengths, tin-coated by electrodeposition. The product is commonly known as electrolytic tin-coated sheet, and is for applications that need good solderability, good surface appearance, and a degree of corrosion resistance. Tin-coated sheet is produced to various designations of tin coating, as outlined in Table 1. TABLE 1 Electrolytic Tin-Coated Sheets Coating Weight [Mass]Note 1—Listed below are the commonly produced coating weights [mass] upon agreement between the producer and the purchaser. Other combinations of coatings may be specified and the appropriate minimum average test valuesA apply.
Designation No.
Nominal Tin Coating
Weight [Mass]
(Each Surface)
lb/base box (g/m2)B
Minimum Average Coating
Weight [Mass]
(Each Surface Test Value)
lb/base box (g/m2)B, C
5 (0.6/0.6)
0.025/0.025 (0.6/0.6)
0.02/0.02 (0.5/0.5)
10 (1.1/1.1)
0.05/0.05 (1.1/1.1)
0.04/0.04 (0.9/0.9)
15 (1.7/1.7)
0.075/0.075 (1.7/1.7)
0.06/0.06 (1.4/1.4)
20 (2.2/2.2)
0.10/0.10 (2.2/2.2)
0.08/0.08 (1.8/1.8)
25 (2.8/2.8)
0.125/0.125 (2.8/2.8)
0.11/0.11 (2.5/2.5)
50 (5.6/5.6)
0.25/0.25 (5.6/5.6)
0.23/0.23 (5.2/5.2)
75 (8.4/8.4)
0.375/0.375 (8.4/8.4)
0.35/0.35 (7.8/7.8)
100 (11.2/11.2)
0.50/0.50 (11.2/11.2)
0.45/0.45 (10.1/10.1) A Refer to Specifications A623 and A623M. B A base box is defined as a unit of area equivalent to 112 sheets 14 in. by 20 in. or 31 360 in.2 (refer to Specification A623). C The minimum single spot value shall not be less than 80 % of the minimum average tin coating weight [mass] (see 8.1 and 8.2).
1.1.1 Electrolytic tin-coated sheet is customarily available as commercial steel (CS); drawing steel (DS); deep drawing steel (DDS); extra deep drawing steel (EDDS), and structural steel (SS). The tin coating is available as unmelted or melted.
1.2 Limitations—This specification is applicable to orders in either inch-pound units (as A599), which is supplied in thicknesses from 0.015 in. to 0.036 in., or SI units [as A599M], which is supplied in thicknesses from 0.381 mm to 0.914 mm. For thicknesses lighter than 0.015 in. [0.381 mm], refer to A624/A624M [A624M].
1.3 Unless the order shows the “M” designation [SI units], the product shall be furnished to inch-pound units. 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.
General Information
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Standards Content (Sample)
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: A599/A599M −07 (Reapproved 2012)
Standard Specification for
Tin Mill Products, Electrolytic Tin-Coated, Cold-Rolled
Sheet
This standard is issued under the fixed designationA599/A599M; 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 A623 Specification for Tin Mill Products, General Require-
ments
1.1 This specification covers cold-rolled steel sheet in coils
A623M Specification for Tin Mill Products, General Re-
or in cut lengths, tin-coated by electrodeposition. The product
quirements [Metric]
is commonly known as electrolytic tin-coated sheet, and is for
A624/A624M Specification for Tin Mill Products, Electro-
applications that need good solderability, good surface
lytic Tin Plate, Single Reduced
appearance, and a degree of corrosion resistance. Tin-coated
A630 Test Methods for Determination of Tin Coating
sheet is produced to various designations of tin coating, as
Weights for Electrolytic Tin Plate
outlined in Table 1.
A700 Practices for Packaging, Marking, and Loading Meth-
1.1.1 Electrolytic tin-coated sheet is customarily available
ods for Steel Products for Shipment
as commercial steel (CS); drawing steel (DS); deep drawing
A1008/A1008M Specification for Steel, Sheet, Cold-Rolled,
steel (DDS); extra deep drawing steel (EDDS), and structural
Carbon, Structural, High-Strength Low-Alloy, High-
steel (SS). The tin coating is available as unmelted or melted.
Strength Low-Alloy with Improved Formability, Solution
1.2 Limitations—This specification is applicable to orders in
Hardened, and Bake Hardenable
either inch-pound units (as A599), which is supplied in
thicknesses from 0.015 in. to 0.036 in., or SI units [as A599M],
3. Terminology
which is supplied in thicknesses from 0.381 mm to 0.914 mm.
3.1 Definitions of Terms Specific to This Standard:
For thicknesses lighter than 0.015 in. [0.381 mm], refer to
3.1.1 chemical treatment—a passivating chemical
A624/A624M [A624M].
treatment, normally applied to the tinned surface to stabilize
1.3 Unless the order shows the “M” designation [SI units],
the surface to control tin oxide formation and growth. Sodium
the product shall be furnished to inch-pound units. The values
dichromate is most commonly used. Without such treatment,
stated in either inch-pound or SI units are to be regarded as
severe tin oxide growth, and its resultant discoloration, is a
standard. Within the text, the SI units are shown in brackets.
hazard. Excessive oxide growth may also cause poor solder-
The values stated in each system are not exact equivalents;
ability and poor adhesion of organic coatings. If a special
therefore,eachsystemmustbeusedindependentlyoftheother.
surface treatment is required, it should be negotiated with the
Combining values from the two systems may result in noncon-
supplier.
formance with this specification.
3.2 Finishes:
2. Referenced Documents
3.2.1 No. 5 Finish—a shot-blasted and/or otherwise textured
2.1 ASTM Standards: roll base metal finish usually employed on unmelted tin-coated
sheet.
A568/A568M Specification for Steel, Sheet, Carbon,
Structural,andHigh-Strength,Low-Alloy,Hot-Rolledand
3.2.2 No. 7 Finish—a ground-roll base metal finish usually
Cold-Rolled, General Requirements for
employed on melted tin-coated sheet.
3.2.2.1 Discussion—It is possible to produce either No. 5 or
No. 7 Finish as unmelted or melted; however, end application
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
is important and should be negotiated with the producer.
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.20 on Tin Mill Products.
3.3 melted tin coating—tin coated by electrodeposition on a
Current edition approved March 1, 2012. Published November 2012. Originally
base steel normally having a ground-roll finish (see 3.2), and
approved in 1969. Last previous edition approved in 2007 as A599/A599M – 07.
DOI: 10.1520/A0599_A0599M-07R12.
then melted to reflow the tin. The resultant coating has a
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
brighter appearance than unmelted tin. An iron-tin alloy layer
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
is developed during the melting operation, thus reducing the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. amount of free tin available. Due to the limitations of the
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A599/A599M − 07 (2012)
TABLE 1 Electrolytic Tin-Coated Sheets Coating Weight [Mass] Unmelted, No. 5 Finish, 0.018 by 26 ⁄16 in. by coil, 60 in. max OD, 16 in.
ID, 18 000 lb max, coil for oil-filter shells. ASTM A599–____ . [Tin-
NOTE 1—Listed below are the commonly produced coating weights
Coated Sheet—Deep Drawing Steel (DDS), Coating Designation 2.8/2.8,
[mass] upon agreement between the producer and the purchaser. Other
Unmelted, No. 5 Finish, 0.50 mm by 668 mm by coil, 1530 mm max OD,
combinations of coatings may be specified and the appropriate minimum
408 mm ID, 8.2 metric tons max, coil for oil-filter shells. ASTM
A
average test values apply.
A599M–____ .]
Nominal Tin Coating Minimum Average Coating
Weight [Mass] Weight [Mass]
5. Manufacture
Designation No.
(Each Surface) (Each Surface Test Value)
2 B 2 B,C
lb/base box (g/m ) lb/base box (g/m )
5.1 Base Metal—The base metal is produced in confor-
5 (0.6/0.6) 0.025/0.025 (0.6/0.6) 0.02/0.02 (0.5/0.5)
mance to that described for cold-rolled sheet in Specification
10 (1.1/1.1) 0.05/0.05 (1.1/1.1) 0.04/0.04 (0.9/0.9)
A568/A568M.
15 (1.7/1.7) 0.075/0.075 (1.7/1.7) 0.06/0.06 (1.4/1.4)
20 (2.2/2.2) 0.10/0.10 (2.2/2.2) 0.08/0.08 (1.8/1.8)
5.2 Coil Preparation—Normal coil inside diameter is 16 in.
25 (2.8/2.8) 0.125/0.125 (2.8/2.8) 0.11/0.11 (2.5/2.5)
[400 mm]; any other should be negotiated. Requirements as to
50 (5.6/5.6) 0.25/0.25 (5.6/5.6) 0.23/0.23 (5.2/5.2)
75 (8.4/8.4) 0.375/0.375 (8.4/8.4) 0.35/0.35 (7.8/7.8) the maximum outside diameter and to the maximum weight
100 (11.2/11.2) 0.50/0.50 (11.2/11.2) 0.45/0.45 (10.1/10.1)
should be indicated. The leading ends of lap welds shall not
A
Refer to Specifications A623 and A623M.
exceed 1 in. [25 mm].
B
A base box is defined as a unit of area equivalent to 112 sheets 14 in. by 20 in.
or 31 360 in. (refer to Specification A623).
C 6. Chemical Requirements
The minimum single spot value shall not be less than 80 % of the minimum
average tin coating weight [mass] (s
...
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