ASTM B860-07
(Specification)Standard Specification for Zinc Master Alloys for Use in Hot Dip Galvanizing
Standard Specification for Zinc Master Alloys for Use in Hot Dip Galvanizing
ABSTRACT
This specification covers electrical contact components made from copper tungsten by powder metallurgical procedures. The material shall conform to the chemical composition limits as agreed upon between the manufacturer and the user. Qualification tests for determination of physical properties shall be performed on production parts, wherever practical or applicable. The tests shall be determined after consideration of the function of the part.This specification covers zinc master alloys which are used in hot dip galvanizing for the purpose of adjusting the concentration of certain alloying elements in the molten zinc bath. The paper presented the chemical composition of these materials which include six master alloys of zinc aluminium; Type A-1, Type A-2, Type A-3, Type A-4, Type A-5, Type A-6, and one master alloy of zinc-antimony, Type S-1. The material covered by this specification shall be made of uniform quality and shall be free from harmful contamination. The alloys shall be tested and conform to the required chemical composition requirements.
SCOPE
1.1 This specification covers zinc master alloys which are used in hot dip galvanizing for the purpose of adjusting the concentration of certain alloying elements in the molten zinc bath. covers the chemical composition of these materials which include six master alloys of zinc-aluminum (brightener) and one master alloy of zinc-antimony.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
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 860 – 07
Standard Specification for
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Zinc Master Alloys for Use in Hot Dip Galvanizing
This standard is issued under the fixed designation B 860; 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.
1. Scope* B 899 Terminology Relating to Non-ferrous Metals and
Alloys
1.1 This specification covers zinc master alloys which are
E29 Practice for Using Significant Digits in Test Data to
used in hot dip galvanizing for the purpose of adjusting the
Determine Conformance with Specifications
concentration of certain alloying elements in the molten zinc
E47 Test Methods for Chemical Analysis of Zinc Die-
bath. Table 1 covers the chemical composition of these
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Casting Alloys
materials which include six master alloys of zinc-aluminum
E88 Practice for Sampling Nonferrous Metals and Alloys
(brightener) and one master alloy of zinc-antimony.
in Cast Form for Determination of Chemical Composition
ASTM Common UNS
E 527 Practice for Numbering Metals and Alloys (UNS)
Type A-1 90/10 Zn/Al High Purity Z30750
Type A-2 90/10 Zn/Al Low Purity Z31710
E 536 TestMethodsforChemicalAnalysisofZincandZinc
Type A-3 95/5 Zn/Al High Purity Z30503
Alloys
Type A-4 95/5 Zn/Al Low Purity Z31510
Type A-5 96/4 Zn/Al High Purity .
3. Terminology
Type A-6 96/4 Zn/Al Low Purity .
Type S-1 90/10 Zn/Sb Z55710
3.1 Terms defined in Terminology B 899 shall apply unless
defined otherwise in this standard.
1.2 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
4. Ordering Information
each system may not be exact equivalents; therefore, each
4.1 Orders for ingots under this specification shall include
system shall be used independently of the other. Combining
the following information:
values from the two systems may result in non-conformance
4.1.1 Quantity, lb,
with the standard.
4.1.2 Alloy type (see Table 1),
1.3 This standard does not purport to address all of the
4.1.3 Size and type of ingot (jumbo, type 1 block, type 2
safety concerns, if any, associated with its use. It is the
block, slab or other ingot shape), if not manufacturer’s stan-
responsibility of the user of this standard to become familiar
dard,
with all hazards including those identified in the appropriate
4.1.4 Specification number and year date,
Material Safety Data Sheet (MSDS) for this product/material
4.1.5 Source inspection (see Section 8), and
as provided by the manufacturer, to establish appropriate
4.1.6 Marking (see Section 10).
safety and health practices, and determine the applicability of
regulatory limitations prior to use.
5. Materials and Manufacture
2. Referenced Documents
5.1 The material covered by this specification shall be of
uniform quality and shall be free from harmful contamination.
2.1 The following documents of the issue in effect on date
The ingot surface shall contain a minimum of dross and
of order acceptance form a part of this specification to the
adhering foreign matter.
extent referenced herein:
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2.2 ASTM Standards:
6. Chemical Requirements Chemical Requirements
B 897 Specification for the Configuration of Zinc and Zinc
6.1 Limits—The alloys shall conform to the requirements as
Alloy Jumbo and Block Ingot
to chemical composition prescribed in Table 1. Conformance
shall be determined by the producer by analyzing samples
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This specification is under the jurisdiction of ASTM Committee B02 on
taken at the time the ingots are made. If the producer has
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
determined the chemical composition of the metal during the
B02.04 on Zinc and Cadmium.
course of manufacture, he shall not be required to sample and
CurrenteditionapprovedJune1,2007.PublishedJuly2007.Originallyapproved
in 1995. Last previous edition approved in 2005 as B 860 - 05.
analyze the finished product.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
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the ASTM website. Withdrawn.
*A Summary of Changes section appears at the end of this standard.
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B860–07
A
TABLE 1 Chemical Requirements Composition, % (Range or Maximum Value)
Type A-1 90 % Zinc–10 % Aluminum (90/10 Zn/Al) High Purity
Type A-2 90 % Zinc–10 % Aluminum (90/10 Zn/Al) Low Purity
Type A-3 95 % Zinc–5 % Aluminum (95/5 Zn/Al) High Purity
...
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