ASTM B833-20

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: B833 − 13 B833 − 20
Standard Specification for
Zinc and Zinc Alloy Wire for Thermal Spraying (Metallizing)
for the Corrosion Protection of Steel
This standard is issued under the fixed designation B833; 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*
1.1 This specification covers zinc and zinc alloy wire used to deposit zinc coatings by thermal spraying (metallizing) for the
corrosion protection of steel and iron. Zinc and zinc alloy wire provided under this specification is intended for use in oxy-fuel
and electric arc thermal spraying equipment. Additional zinc alloy compositions used in thermal spraying primarily for electronic
applications are found in Specification B943.
1.2 Zinc alloy wire compositions used in thermal spraying primarily for electronic applications are found in Specification B943.
1.3 Zinc alloy wire compositions used as solders are found in Specification B907.
1.4 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
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 Material Safety Data
Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety safety, health, and
healthenvironmental 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.
2. Referenced Documents
2.1 The following ASTM documents of the issue in effect on the date of material purchase form a part of this specification to
the extent referenced herein:
2.2 ASTM Standards:
B6 Specification for Zinc
B899 Terminology Relating to Non-ferrous Metals and Alloys
B907 Specification for Zinc, Tin and Cadmium Base Alloys Used as Solders
B943 Specification for Zinc and Tin Alloy Wire Used in Thermal Spraying for Electronic Applications
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
2.3 ANSI/AWS Standard:
ANSI/AWS A5.33 Specification for Solid and Ceramic Wires and Ceramic Rods for Thermal Spraying
2.4 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
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 Feb. 1, 2013April 1, 2020. Published March 2013April 2020. Originally approved in 1993. Last previous edition approved in 20092013 as B833 –
06.13. DOI: 10.1520/B0833-13.10.1520/B0833-20.
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.
Available from American Welding Society (AWS), 550 NW LeJeune Rd., Miami, FL 33126, http://www.aws.org.
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
B833 − 20
3. Terminology
3.1 Terms shall be defined in accordance with Terminology B899.
4. Ordering Information
4.1 In order to make the application of this specification complete, the purchaser shall supply the following information to the
seller in the purchase order or other governing documents:
4.1.1 Name, designation, and date of issue of this specification,
4.1.2 Quantity (mass(weight) in kilograms (pounds)),
4.1.3 Diameter (see Table 1),
4.1.4 Acceptance tests if other than specified (see Section 10),
4.1.5 Certification (see Section 1114),
4.1.6 Packaging and packing materials (see Section 1215), and
4.1.7 Supplementary requirements, if applicable.
4.2 See Specification B949.
5. Materials and Manufacture
5.1 The zinc used to manufacture the wire shall conform to the requirements for High Grade Zinc (Z15001) or Special High
Grade Zinc (Z13001) as specified in Specification B6.
5.2 See Specification B949.
6. Chemical Composition
6.1 The wire shall conform to the requirements prescribed in Table 2.
6.2 The manufacturer shall perform chemical analyses as directed by Test Methods E536, ISO 3815-1, ISO 3815-2 or by other
methods of at least equal accuracy to confirm that the wire conforms to the requirements of composition. In case of dispute, Test
Method E536 shall be accepted. Analysis of alloy wires not covered by Test Method E536 shall be agreed upon between the
manufacturer and the purchaser.
NOTE 1—Test Method E536 is not directly applicable, in an unmodified form, to alloys 85Zn/15Al or 87Zn/13Al.
NOTE 2—By mutual agreement between supplier and purchaser, analysis may be required and limits established for elements or compounds not
specified in Table 2.
6.2.1 Analysis may be performed on finished wire, on material selected when the wire is cast, or on samples taken from
semi-finished wire.
6.2.2 If analysis is performed on finished wire, the number and selection of samples shall be agreed upon by the buyer and seller.
6.2.3 If the analysis is performed on material selected while the wire is being cast, at least one sample shall be selected for each
source of molten metal.
6.2.4 If the analysis is performed on samples taken from semi-finished product, at least one sample shall be analyzed for each
4500 kg (10 000 lbs) or fraction thereof.
7. Physical Properties and Mechanical Properties
7.1 Appendix X1 shows typical physical properties for zinc and zinc alloy wire and does not constitute a part of this
specification but is provided for informational purposes only.
7.2 Appendix X2 shows typical mechanical properties for zinc and zinc alloy wire and does not constitute a part of this
specification but is provided for informational purposes only.
TABLE 1 Dimensions, Weights, and Permissible Variations
Nominal Wire Diameter Permissible Variation Nominal Weight Per Unit Length
mm (in.) mm (in.) g/m (lb/ft)
4.763 (0.1875) +0.0000 (+0.0000) 123.517-126.493 (0.083-0.085)
-0.0762 (-0.0030)
3.175 (0.125) +0.0000 (+0.0000) 55.062-56.550 (0.037-0.038)
-0.0508 (-0.0020)
2.311 (0.091) +0.0000 (+0.0000) 28.275-29.673 (0.019-0.020)
-0.0381 (-0.0015)
2.000 (0.079) +0.0000 (+0.0000) 20.834-22.322 (0.014-0.015)
-0.0381 (-0.0015)
1.626 (0.064) +0.0000 (+0.0000) 13.393-14.882 (0.009-0.010)
-0.0381 (-0.0015)
1.448 (0.057) +0.0000 (+0.0000) 10.417-11.905 (0.007-0.008)
-0.0381 (-0.0015)
B833 − 20
TABLE 2 Chemical Composition Requirements for Zinc and Zinc Alloy Wires
NOTE 1—The following applies to all specified limits in this table. For the 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 E29.
Composition, %
(Weight percent)
Common Total
Al, max Other,
A
Name (UNS) Cd, Cu, Fe, Pb, Sn, Sb, Ag, Bi, As, Ni, Mg, Mo, Ti, Zn, Non-
unless Total
max max max max max max max max max max max max max min ZN+Al,
noted max
max
B
99.99 Zinc 0.002 0.003 0.005 0.003 0.003 0.001 . . . . . . . . 99.99 . .
(Z13005) . . . . . . . . . . .
B
99.9 Zinc 0.01 0.02 0.02 0.02 0.03 . . . . . . . . . 99.9 . 0.10
(Z15005) . . . . . . . . . . . total
non-Zn
B
85 Zn/15 Al 14.0- 0.005 0.005 0.06 0.005 0.003 0.01 0.015 0.02 0.002 0.005 0.02 . . remain- . 0.05
C
(Z30700)
16.0 der total
non
Zn+Al
99.995 Zinc 0.001 0.003 0.001 0.002 0.003 0.001 . . . . . . . . 99.995 . 0.005
(Z12004)
99.95 Zinc 0.01 0.02 0.001 0.02 0.03 0.001 . . . . . . . . 99.95 . 0.050
(Z14004)
99 Zinc 0.01 0.005 0.7 0.01 0.005 0.001 . . . . . 0.01 0.01 0.18 99 . 1.0
(Z17000)
98Zn/2Al 1.5-2.5 0.005 0.005 0.02 0.005 0.003 0.10 0.015 0.02 0.002 0.005 0.02 . . remain- . .
(Z30402) der
87Zn/13Al 12.0-14.0 0.005 0.005 0.06 0.005 0.003 0.01 0.015 0.02 0.002 0.005 0.02 . . remain- 0.05 .
(Z30701) der
A
UNS designations were established in accordance with Recommended Practice E527.
B
In accordance with ANSI/AWS A5.33.
C
Remainder determined arithmetically by difference.

B833 − 20
7.2.1 Mechanical properties are important so the wire can be fed into a thermal spray gun without breaking or jamming.
7.2.2 Mechanical properties of zinc and zinc alloy wire will vary depending upon
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