ASTM B852-07
(Specification)Standard Specification for Continuous Galvanizing Grade (CGG) Zinc Alloys for Hot-Dip Galvanizing of Sheet Steel
Standard Specification for Continuous Galvanizing Grade (CGG) Zinc Alloys for Hot-Dip Galvanizing of Sheet Steel
ABSTRACT
This specification covers grades of zinc alloys, commonly known as continuous galvanizing grade (CGG) alloys that contain aluminum, or aluminum and lead and that are used in continuous hot-dip galvanizing of steel sheet. CGG alloy shall be tested and conform to the chemical composition requirements as determined by chemical analysis on samples taken. CGG alloy castings shall be free of undue surface oxide, adhering foreign matter, and any flash that would interfere with handling and use. Samples obtained during casting, drilling or sawing shall be analyzed individually and the average of the individual determinations for the samples from the lot shall be reported as the analysis of the lot.
SCOPE
1.1 This specification covers grades of zinc alloys, commonly known as Continuous Galvanizing Grade (CGG) alloys that contain aluminum, or aluminum and lead and that are used in continuous hot-dip galvanizing of steel sheet. The compositions for CGG grades made from primary zinc are shown in Table 1. Exceptions for grades made from secondary zinc are found in footnote C.
1.2 Other alloy compositions not included in B 852, and as may be agreed upon between the producer and the user, may be used for continuous galvanizing.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.
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Designation: B 852 – 07
Standard Specification for
Continuous Galvanizing Grade (CGG) Zinc Alloys for Hot-
1
Dip Galvanizing of Sheet Steel
This standard is issued under the fixed designation B 852; 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.
TABLE 1 Chemical Requirements
1. Scope*
Composition,%
1.1 This specification covers grades of zinc alloys, com-
A
Grade
B
Nominal Range
monly known as Continuous Galvanizing Grade (CGG) alloys
(UNS)
C
that contain aluminum, or aluminum and lead and that are used
Aluminum Lead Aluminum Lead
in continuous hot-dip galvanizing of steel sheet. The compo-
Z80310 0.25 . 0.22 to 0.28 0.007 max
Z80411 0.35 . 0.31 to 0.39 0.007 max
sitions for CGG grades made from primary zinc are shown in
Z80511 0.45 . 0.40 to 0.50 0.007 max
Table 1. Exceptions for grades made from secondary zinc are
Z80531 0.45 0.02 0.40 to 0.50 0.01 to 0.03
found in footnote C.
Z80610 0.55 . 0.49 to 0.61 0.007 max
Z80710 0.65 . 0.58 to 0.72 0.007 max
1.2 Other alloy compositions not included in B 852, and as
Z80810 0.75 . 0.67 to 0.83 0.007 max
maybeagreeduponbetweentheproducerandtheuser,maybe
Z80910 1.00 . 0.90 to 1.10 0.007 max
used for continuous galvanizing.
C
Impurities, %: Iron 0.0075 max
1.3 The values stated in inch-pound units are to be regarded
Cadmium 0.01 max
as the standard. The values given in parentheses are for
Copper 0.01 max
information only.
Other Elements total of 0.01 max
Zinc: balance by difference
1.4 This standard does not purport to address all of the
A
safety concerns, if any, associated with its use. It is the UNS numbers in conformance with Practice E 527.
B
Forpurposesofdeterminingconformancewiththisspecification,anobserved
responsibility of the user of this standard to become familiar
value obtained from analysis shall be rounded to the nearest unit in the last
with all hazards including those identified in the appropriate
right-hand place of figures used in expressing the limiting value, in accordance
with the rounding method of PracticeE29.
Material Safety Data Sheet (MSDS) for this product/material
C
Lead and Iron levels of 0.01 % max and 0.01 % max respectively are allowed
as provided by the manufacturer, to establish appropriate
for CGG alloys produced from secondary zinc.
safety and health practices, and determine the applicability of
regulatory limitations prior to use.
E88 Practice for Sampling Nonferrous Metals and Alloys
in Cast Form for Determination of Chemical Composition
2. Referenced Documents
E 527 Practice for Numbering Metals and Alloys (UNS)
2
2.1 ASTM Standards:
E 536 TestMethodsforChemicalAnalysisofZincandZinc
B 897 Specification for the Configuration of Zinc and Zinc
Alloys
Alloy Jumbo and Block Ingot
E 634 Practice for Sampling of Zinc and Zinc Alloys for
B 899 Terminology Relating to Non-ferrous Metals and
Optical Emission Spectrometric Analysis
Alloys
3. Terminology
E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
3.1 Terms shall be defined in accordance with Terminology
B 899.
1
This specification is under the jurisdiction of ASTM Committee B02 on 4. Ordering Information
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
4.1 Orders for CGG alloy under this specification shall
B02.04 on Zinc and Cadmium.
include the following information:
Current edition approved May 1, 2007. Published May 2007. Originally
approved in 1994. Last previous edition approved in 2001 as B 852 - 01.
4.1.1 Number of ASTM standard, including year of issue,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.1.2 Quantity (weight),
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4.1.3 Name of material (CGG),
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 4.1.4 Size and shape (Section 7), and
*A Summary of Changes section appears at the end of this standard.
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B852–07
4.1.5 Grade (see Table 1). Adventitious iron with which the sample may have been
contaminated from the drill or the saw shall be removed with
a strong magnet.
5. Materials and Manufacture
9.2.3 Drilling—Two holes shall be drilled, preferably from
5.1 The producer shall use care that each shipment of CGG
the bottom or brand side of each slab, at two points located
alloy be as u
...
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