ASTM B750-12

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:B750–09 Designation: B750 – 12
Standard Specification for
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GALFAN (Zinc-5 % Aluminum-Mischmetal) Alloy in Ingot
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Form for Hot-Dip Coatings
This standard is issued under the fixed designation B750; 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*
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1.1 This specification covers GALFAN, zinc-5 % aluminum-mischmetal (Zn-5Al-MM) alloy (UNS Z38510) in ingot form for
remelting for use in the production of hot-dip coatings on steel. Alloy composition is specified in Table 1.
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.
2. Referenced Documents
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2.1 ASTM Standards:
B899 Terminology Relating to Non-ferrous Metals and Alloys
B949 Specification for General Requirements for Zinc and Zinc Alloy Products
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications E88
E88 Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical Composition
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E1277 Test Method for Chemical Analysis of Zinc-5 % Aluminum-Mischmetal Alloys by ICP Emission Spectrometry
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2.2 Other Standard:
GF-1 StandardPracticeforDeterminationofCeriumandLanthanumCompositionsinGALFANAlloy(5 %-0.04 %La-0.04 %
Ce-Bal SHG Zn)
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2.3 ISO Standards:
ISO 3815-1 Zinc and zinc alloys — Part 1: Analysis of solid samples by optical emission spectrometry
ISO 3815-2 Zinc and zinc alloys — Part 2: Analysis by inductively coupled plasma optical emission spectrometry
3. Terminology
3.1 Terms shall be defined in accordance with Terminology B899.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 mischmetal, n—a naturally occurring mixture of rare-earth elements in metallic form, primarily cerium and lanthanum.
3.3 Abbreviations:
3.3.1 MM—mischmetal.
3.3.2 Zn-5Al-MM—zinc-5 % aluminum mischmetal.
4. Ordering Information
4.1Orders for ingot under this specification shall include the following information:
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GALFAN is a registered trademark of the GALFAN Information Center, Inc.
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This specification is under the jurisdiction ofASTM Committee B02 on Nonferrous Metals andAlloys and is the direct responsibility of Subcommittee B02.04 on Zinc
and Cadmium.
Current edition approved Oct.May 1, 2009.2012. Published November 2009.May 2012. Originally approved in 1985. Last previous edition approved in 20082009 as
B750 – 089. DOI: 10.1520/B0750-09.10.1520/B0750-12.
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UNS number in conformance with Practice E527.
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For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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Available from International Lead Zinc Research Organization, 2525 Meridian Parkway, P.O. Box 12036, Research Triangle Park, NC 27709 – 2036, http://
www.ilzro.org.
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Available from American National Standards Institute (ANSI), 25 W. 43rd St., 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.
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B750 – 12
TABLE 1 GALFAN, Zn-5Al-MM Alloy Ingot Chemical
A,B,C,D,E
Requirements
UNS Z38510
Element
Composition,%
F
Aluminum 4.2–6.2
Cerium + lanthanum, total 0.03–0.10
Iron, max 0.075
Silicon, max 0.015
G
Lead , max 0.005
G
Cadmium , max 0.005
G
Tin , max 0.002
H
Others , each, max 0.02
H
Others , total, max 0.04
Zinc Remainder
A
For purposes of acceptance and rejection, the observed value or calculated
value obtained from analysis shou
...