Active Standard ASTM B943 | Developed by Subcommittee: B02.04
Book of Standards Volume: 02.04
Historical (view previous versions of standard)
This specification covers zinc and tin alloy wire, including zinc-aluminum, zinc-aluminum-copper, zinc-tin, zinc-tin-copper an dtin-zinc, used as thermal spray wire in the electronics industry. The wire shall conform to the required chemical composition for cadmium, zinc, tin, lead, antimony, copper, aluminum, bismuth, arsenic, iron, nickel, and magnesium. The wire shall be clean and free of corrosion, adhering foreign material, scale, seams, nicks, burrs, and other defects which would interfere with the operation of thermal spraying equipment. The wire shall uncoil readily and be free of bends or kinks that would prevent its passage through the thermal spray gun. Sampling methodology should ensure that the sample slected for testing is representative of the matreial. The diameter of the wire shall be determines at the end and the beginning of each continuous wire.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1.1 Certain alloys specified in this standard are also used as solders for the purpose of joining together two or more metals at temperatures below their melting points, and for other purposes (as noted in Annex A1). Specification B907 covers Zinc, Tin and Cadmium Base Alloys Used as Solders which are used primarily for the purpose of joining together two or more metals at temperatures below their melting points and for other purposes (as noted in the Annex part of Specification B907). Specification B833 covers Zinc and Zinc Alloy Wire for Thermal Spraying (Metallizing) used primarily for the corrosion protection of steel (as noted in the Annex part of Specification B833).
1.1.2 Tin base alloys are included in this specification because their use in the electronics industry is similar to the use of certain zinc alloys but different than the major use of the tin and lead solder compositions specified in Specification B32.
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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B32 Specification for Solder Metal
B527 Test Method for Determination of Tap Density of Metallic Powders and Compounds
B833 Specification for Zinc and Zinc Alloy Wire for Thermal Spraying (Metallizing) for the Corrosion Protection of Steel
B899 Terminology Relating to Non-ferrous Metals and Alloys
B907 Specification for Zinc, Tin and Cadmium Base Alloys Used as Solders
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E46 Test Methods for Chemical Analysis of Lead- and Tin-Base Solder
E51 Method for Spectrographic Analysis of Tin Alloys by the Powder Technique
E87 Methods for Chemical Analysis of Lead, Tin, Antimony and Their Alloys (Photometric Method)
E536 Test Methods for Chemical Analysis of Zinc and Zinc Alloys
Federal StandardFed.Std.No.123 Marking for Shipment (Civil Agencies)
ISO StandardsISO3815-1 Zinc and zinc alloys -- Part 1: Analysis of solid samples by optical emission spectrometry ISO3815-2 Zinc and zinc alloys -- Part 2: Analysis by inductively coupled plasma optical emission spectrometry
Military StandardMIL-STD-129 Marking for Shipment and Storage
ICS Number Code 25.220.20 (Surface treatment)
UNSPSC Code 23281503(Thermal spray machine)