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ASTM B860-09

(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. Table 1 covers the chemical composition of these materials which include six master alloys of zinc-aluminum (brightener) and one master alloy of zinc-antimony.
   ASTM Common  UNS  Type A-190/10 Zn/Al High PurityZ30750  Type A-290/10 Zn/Al Low PurityZ31710 Type A-395/5 Zn/Al High PurityZ30503  Type A-495/5 Zn/Al Low PurityZ31510 Type A-596/4 Zn/Al High Purity... Type A-696/4 Zn/AlLow Purity... Type S-190/10 Zn/Sb Z55710
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 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.  
TABLE 1 Chemical Requirements Composition, % (Range or Maximum Value)A  Type A-190 % Zinc–10 % Aluminum (90/10 Zn/Al)High Purity Type A-290 % Zinc–10 % Aluminum (90/10 Zn/Al)Low Purity Type A-395 % Zinc–5 % Aluminum (95/5 Zn/Al)High Purity Type A-495 % Zinc–5 % Aluminum (95/5 Zn/Al)Low Purity Type A-596 % Zinc–4 % Aluminum (96/4 Zn/Al)High Purity Type A-696 % Zinc–4 % Aluminum (96/4 Zn/Al)Low Purity Type S-190 % Zinc–10 % Antimony (90/10 Zn/Sb) UNSBType A-1
90/10 Zn/Al
Z30750Type A-2
90/10 Zn/Al
Z31710Type A-3
95/5 Zn/Al
Z30503Type A-4
95/5 Zn/Al
Z31510 Type A-5
96/4 Zn/Al
ZXXXXXType A-6
96/4 Zn/Al
ZXXXXXType S-1
90/10 Zn/Sb
Z55710 Fe0.05 max0.15 max0.05 max0.15 max0.05 max0.15 max0.03 max Pb0.005 max0.4 max0.005 max0.4 max0.0005 max0.4 max0.015 max Cd0.004 max...0.004 max...0.004 max...0.003 max Cu0.035 max0.5 max0.035 max0.5 max0.035 max0.5 max0.003 max Mg............0.06 max0.06 max Sn0.003 max...0.003 max...0.003 max...0.01 max As..................0.015 max Al9.5–10.59.5–10.54.5–5.54.5–5.54.0-4.54.0-4.5... SbC..................9.5–10.5 Others, Total0.01 max0.25 max0.01 max0.25 max0.01 max0.25 max0.03 max ZnDRemainderRemainderRemainderRemainderRemainderRemainderRemainder
A The following applies to all specified limits in this table: For purposes of determining conformance with this specification, an observed value obtained from analysis shall be rounded off to the nearest unit in the last right-hand place of figures used in expressing the limiting value, in accordance with the rounding method of Practice E 29.
B UNS numbers in conformanc...

General Information

Status
Historical
Publication Date
14-Apr-2009
ICS
77.120.60 - Lead, zinc, tin and their alloys
Technical Committee
B02 - Nonferrous Metals and Alloys
Drafting Committee
B02.04 - Zinc and Cadmium
Current Stage
Ref Project

Relations

Replaces
ASTM B860-08 - Standard Specification for Zinc Master Alloys for Use in Hot Dip Galvanizing
Effective Date
15-Apr-2009
Replaced By
ASTM B860-09a - Standard Specification for Zinc Master Alloys for Use in Hot Dip Galvanizing
Effective Date
01-Oct-2009
Referred By
ASTM B997-16(2021) - Standard Specification for Zinc-Aluminum Alloys in Ingot Form for Hot-Dip Coatings
Effective Date
15-Apr-2009
Referred By
ASTM B949-23 - Standard Specification for General Requirements for Zinc and Zinc Alloy Products
Effective Date
15-Apr-2009
Referred By
ASTM B914-21 - Standard Practice for Color Codes on Zinc and Zinc Alloy Ingot for Use in Hot-Dip Galvanizing of Steel
Effective Date
15-Apr-2009

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ASTM B860-09 - Standard Specification for Zinc Master Alloys for Use in Hot Dip Galvanizing
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
Designation: B860 – 09
Standard Specification for
1
Zinc Master Alloys for Use in Hot Dip Galvanizing
This standard is issued under the fixed designation B860; 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 (ϵ) indicates an editorial change since the last revision or reapproval.
1. Scope* B899 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
3
Casting Alloys
materials which include six master alloys of zinc-aluminum
E88 Practice for Sampling Nonferrous Metals andAlloys in
(brightener) and one master alloy of zinc-antimony.
Cast Form for Determination of Chemical Composition
ASTM Common UNS
E527 Practice for Numbering Metals and Alloys in the
Type A-1 90/10 Zn/Al High Purity Z30750
Type A-2 90/10 Zn/Al Low Purity Z31710
Unified Numbering System (UNS)
Type A-3 95/5 Zn/Al High Purity Z30503
E536 Test Methods for ChemicalAnalysis of Zinc and Zinc
Type A-4 95/5 Zn/Al Low Purity Z31510
Alloys
Type A-5 96/4 Zn/Al High Purity .
4
Type A-6 96/4 Zn/Al Low Purity .
2.3 ISO Standards:
Type S-1 90/10 Zn/Sb Z55710
ISO 3815-1 Zincandzincalloys—Part1:Analysisofsolid
1.2 The values stated in inch-pound units are to be regarded samples by optical emission spectrometry
as standard. The values given in parentheses are mathematical ISO 3815-2 Zinc and zinc alloys — Part 2: Analysis by
conversions to SI units that are provided for information only inductively coupled plasma optical emission spectrometry
and are not considered standard.
3. Terminology
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 3.1 Terms defined in Terminology B899 shall apply unless
defined otherwise in this standard.
responsibility of the user of this standard to become familiar
3.2 Definitions of Terms Specific to This Standard:
with all hazards including those identified in the appropriate
Material Safety Data Sheet (MSDS) for this product/material 3.2.1 brightener bar, n—brightener bar is a zinc alloy
containing aluminum which is added to the galvanizing bath to
as provided by the manufacturer, to establish appropriate
safety and health practices, and determine the applicability of adjust the aluminum content of the bath to: suppress the
formation of iron-zinc alloy layers, increase the brightness and
regulatory limitations prior to use.
ductilityofthegalvanizedcoating,andimprovethedrainageof
2. Referenced Documents
zinc from the work as it exits the bath; also called brightener.
2.1 The following documents of the issue in effect on date
4. Ordering Information
of order acceptance form a part of this specification to the
4.1 Orders for ingots under this specification shall include
extent referenced herein:
2
2.2 ASTM Standards: the following information:
4.1.1 Quantity, lb,
B897 Specification for Configuration of Zinc and Zinc
Alloy Jumbo Block and Half Block Ingot 4.1.2 Alloy type (see Table 1),
4.1.3 Size and type of ingot (jumbo, type 1 block, type 2
block, slab or other ingot shape), if not manufacturer’s stan-
1
This specification is under the jurisdiction of ASTM Committee B02 on
dard,
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
4.1.4 Specification number and year date,
B02.04 on Zinc and Cadmium.
4.1.5 Source inspection (see Section 8), and
Current edition approved April 15, 2009. Published June 2009. Originally
approved in 1995. Last previous edition approved in 2008 as B860 - 08. DOI:
10.1520/B0860-09.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Withdrawn.
4
Standards volume information, refer to the standard’s Document Summary page on Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036, http://www.ansi.org.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
B860 – 09
A
TABLE 1 Chemical Requ
...

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ASTM  
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SCOPE
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Standard Specification for Zinc Casting Alloy Ingot for Sheet Metal Forming Dies and Plastic Injection Molds

ABSTRACT
This specification covers the standard requirements for commercial zinc casting alloys in ingot form for use in the manufacture of sheet metal forming dies, sand cast or plaster cast forming dies, and plastic injection molds. Kirksite A alloy (UNS Z35543) is intended for use in the fabrication of dies for sheet metal stamping under drop hammer and hydraulic pressure while Kirksite B alloy (UNS Z35542) is a special purpose alloy of closely controlled composition and is primarily used in the manufacture of plastic injection molds. The alloys may be made by any approved process and shall be of uniform quality and free from dross, slag, or other harmful contamination. Jumbo or block ingots shall conform to the configuration, or to a shape and size previously agreed upon. Conformance with the composition requirements for aluminum, cadmium, copper, iron, lead, magnesium, tin and zinc shall be determined by spectrographic or chemical analysis. The samples for chemical analysis shall be taken from the material by drilling, sawing, milling, turning, or clipping a representative piece or pieces of the ingot.
SCOPE
1.1 This specification covers commercial zinc alloys in ingot form for remelting for the manufacture of dies and molds from the alloys as shown in Table 1.  
1.2 This specification presents requirements for zinc alloys suitable for the production of sand cast or plaster cast forming dies for sheet metal stamping operations and plastic injection molding. Alloy A is intended for use in the fabrication of dies for sheet metal stamping under drop hammer and hydraulic pressure. Alloy B is a special purpose alloy of closely controlled composition and is primarily used in the manufacture of plastic injection molds.  
1.3 This specification covers two zinc alloys which are specified and designated as follows:    
UNS  
ASTM  
Traditional  
Z35543  
Alloy A  
Kirksite A  
Z35542  
Alloy B  
Kirksite B  
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.5 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 Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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