ASTM B997-16
(Specification)Standard Specification for Zinc-Aluminum Alloys in Ingot Form for Hot-Dip Coatings
Standard Specification for Zinc-Aluminum Alloys in Ingot Form for Hot-Dip Coatings
ABSTRACT
This specification covers three types of zinc-aluminum (Zn-Al) alloys in ingot form for re-melting for use in the production of hot-dip coatings on steel: Type 5 (95/5 Zn/Al), Type 10 (90/10 Zn/Al), and Type 15 (85/15 Zn/Al). Requirements prescribed by this specification cover ordering information; chemical, physical, and mechanical requirements; sampling for determination of chemical composition; methods for chemical analysis; material and manufacturing requirements; dimensions, mass, shapes, and sizes; workmanship, finish, and appearance; inspection and certification; product and package marking; and packaging and preparation for delivery.
SCOPE
1.1 This specification covers certain zinc-aluminum (Zn-Al) alloys in ingot form for re-melting for use in the production of hot-dip coatings on steel. Alloy compositions are specified below and in Table 1.
ASTM
Common
UNS
Type 5
95/5 Zn/Al
to be assigned
Type 10
90/10 Zn/Al
to be assigned
Type 15
85/15 Zn/Al
to be assigned
Note 1: The zinc-aluminum alloys in Specification B997 are intended to be used primarily to create a molten zinc-aluminum bath and differ from the master alloys in Specification B860 which are intended primarily to adjust the concentration of certain elements in molten zinc galvanizing baths.
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 establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:B997 −16
Standard Specification for
1
Zinc-Aluminum Alloys in Ingot Form for Hot-Dip Coatings
This standard is issued under the fixed designation B997; 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* B949 Specification for General Requirements for Zinc and
Zinc Alloy Products
1.1 Thisspecificationcoverscertainzinc-aluminum(Zn-Al)
E29 Practice for Using Significant Digits in Test Data to
alloys in ingot form for re-melting for use in the production of
Determine Conformance with Specifications
hot-dip coatings on steel. Alloy compositions are specified
E527 Practice for Numbering Metals and Alloys in the
below and in Table 1.
Unified Numbering System (UNS)
ASTM Common UNS
E536 Test Methods for Chemical Analysis of Zinc and Zinc
Type 5 95/5 Zn/Al to be assigned
Alloys
Type 10 90/10 Zn/Al to be assigned
Type 15 85/15 Zn/Al to be assigned
E1277 Test Method for Analysis of Zinc-5 % Aluminum-
Mischmetal Alloys by ICP Emission Spectrometry
NOTE 1—The zinc-aluminum alloys in Specification B997 are intended
tobeusedprimarilytocreateamoltenzinc-aluminumbathanddifferfrom 3
2.3 ISO Standards:
the master alloys in Specification B860 which are intended primarily to
ISO 3815-1 Zinc and zinc alloys — Part 1:Analysis of solid
adjust the concentration of certain elements in molten zinc galvanizing
samples by optical emission spectrometry
baths.
ISO 3815-2 Zinc and zinc alloys — Part 2: Analysis by
1.2 The values stated in inch-pound units are to be regarded
inductively coupled plasma optical emission spectrometry
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
3. Terminology
and are not considered standard.
3.1 Terminology:
1.3 This standard does not purport to address all of the
3.1.1 Type 5, n—95 % zinc – 5 % aluminum alloy.
safety concerns, if any, associated with its use. It is the
3.1.2 Type 10, n—90 % zinc – 10 % aluminum alloy.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
3.1.3 Type 15, n—85 % zinc – 15 % aluminum alloy.
bility of regulatory limitations prior to use.
3.2 Abbreviations:
3.2.1 95/5 Zn/Al—95 % zinc – 5 % aluminum alloy.
2. Referenced Documents
3.2.2 90/10 Zn/Al—90 % zinc – 10 % aluminum alloy.
2.1 The following documents of the issue in effect on date
of order acceptance form a part of this specification to the
3.2.3 85/15 Zn/Al—85 % zinc – 15 % aluminum alloy.
extent referenced herein:
2 4. Ordering Information
2.2 ASTM Standards:
B750 Specification for GALFAN (Zinc-5 % Aluminum- 4.1 Orders for ingots under this specification shall include
Mischmetal) Alloy in Ingot Form for Hot-Dip Coatings the relevant information as listed in Specification B949.
B860 Specification for Zinc Master Alloys for Use in Hot
Dip Galvanizing 5. Chemical Requirements
B899 Terminology Relating to Non-ferrous Metals and Al-
5.1 Limits—The alloys shall conform to the requirements as
loys
to chemical composition prescribed in Table 1. Conformance
shall be determined by the producer by analyzing samples
1
This specification is under the jurisdiction of ASTM Committee B02 on
taken at the time 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
CurrenteditionapprovedMay1,2016.PublishedJuly2016.Originallyapproved
in 2015. Last previous edition approved in 2015 as B997 – 15. DOI: 10.1520/
analyze the finished product.
B0997-16.
2
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
3
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 ----------------------
B997−16
A,B,C,D,E,F,G
TABLE 1 Zn-Al Alloy Ingot Chemical Requirements formatted for the alloy to be assayed. An experienced chemist, using
suitable and/or traceable standards along with valid quality assurance
Composition, %
techniques, will be able to perform and validate the methods and
F E E
Type 5 Type 10 Type 15
Element
d
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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: B997 − 15 B997 − 16
Standard Specification for
1
Zinc-Aluminum Alloys in Ingot Form for Hot-Dip Coatings
This standard is issued under the fixed designation B997; 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 Scope*
1.1 This specification covers certain zinc-aluminum (Zn-Al) alloys in ingot form for re-melting for use in the production of
hot-dip coatings on steel. Alloy compositions are specified below and in Table 1.
ASTM Common UNS
Type 5 95/5 Zn/Al to be assigned
Type 10 90/10 Zn/Al to be assigned
Type 15 85/15 Zn/Al to be assigned
NOTE 1—The zinc-aluminum alloys in Specification B997 are intended to be used primarily to create a molten zinc-aluminum bath and differ from
the master alloys in Specification B860 which are intended primarily to adjust the concentration of certain elements in molten zinc galvanizing baths.
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 establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2.1 The following documents of the issue in effect on date of order acceptance form a part of this specification to the extent
referenced herein:
2
2.2 ASTM Standards:
B750 Specification for GALFAN
B860 Specification for Zinc Master Alloys for Use in Hot Dip Galvanizing
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
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E536 Test Methods for Chemical Analysis of Zinc and Zinc Alloys
E1277 Test Method for Analysis of Zinc-5 % Aluminum-Mischmetal Alloys by ICP Emission Spectrometry
3
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 Terminology:
3.1.1 Type 5, n—95 % zinc – 5 % aluminum alloy.
3.1.2 Type 10, n—90 % zinc – 10 % aluminum alloy.
3.1.3 Type 15, n—85 % zinc – 15 % aluminum alloy.
1
This specification is under the jurisdiction of ASTM Committee B02 on Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee B02.04 on Zinc
and Cadmium.
Current edition approved June 1, 2015May 1, 2016. Published July 2015July 2016. Originally approved in 2015. Last previous edition approved in 2015 as B997 – 15.
DOI: 10.1520/B0997-15.10.1520/B0997-16.
2
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 the ASTM website.
3
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
1
---------------------- Page: 1 ----------------------
B997 − 16
A,B,C,D,E,F,G
TABLE 1 Zn-Al Alloy Ingot Chemical Requirements
Composition, %
F E E
Type 5 Type 10 Type 15
Element
95/5 Zn/Al 90/10 ZN/Al 85/15 Zn/Al
UNS (to be UNS (to be UNS (to be
assigned) assigned) assigned)
Aluminum 4.2-6.2 9.5-10.5 14.1-15.9
Iron, max 0.075 0.075 0.075
Silicon, max 0.015 0.015 0.015
H
Lead, max 0.005 0.005 0.005
H
Cadmium, max 0.005 0.005 0.005
H
Tin, max 0.002 0.002 0.002
I
Others, each, max 0.02 0.02 0.02
I
Others, total, max 0.04 0.04 0.04
Zinc Remainder Remainder Remainder
A
For purposes of acceptance and rejection, the observed value or calculated
value obtained from analysis should be rounded to the nearest unit in the last
right-hand place of figures, used in expressing the specified limit, in accordance
with the ro
...
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