ASTM A gives information on recommended steel chemistry for steel to be galvanized, as well as required venting/drainage hole. ASTM A/A M. Standard Practice for Providing High-Quality Zinc Coatings (Hot-Dip) provides details on steel selection and other design practices such as. ASTM Apdf – Download as PDF File .pdf), Text File .txt) or read online.

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ASTM A / AM – 17 Standard Practice for Providing High-Quality Zinc Coatings (Hot-Dip)

Moving Parts and must be subsequently hot-dip galvanized, the designer should be aware that the hot-dip galvanizing process uses Practice for Repair of Axtm and Uncoated Areas of HOt-Dip Galvanized Coatings covers appropriate methods used to repair damaged hot-dip galvanized coatings on hardware, structural shapes, and other hot-dip galvanized products, including uncoated areas remaining after initial hot-dip galvanizing.

It may also be known by its trade name, e. LME grade, special high grade, high grade, intermediate grade, and z385 western grade. Steel materials and nuts shall be manufactured, processed, and formed as appropriate for their respective grades.

Overlapping or Contacting Surfaces or Both 5.

A — 03 Standard Practice for Providing High-Quality Zinc Coatings Hot-Dip 1 This standard is issued under the fixed designation A ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the axtm of last revision. Standard Specification for Zinc.

What are the differences between ASTM A123/A123M and ASTM A385?

They can only be used if the electrical conductivity of the coating differs significantly from that of the substrate.


All markings shall remain legible after galvanizing. Each system shall be used independently of the other without combining values in any way. This specification covers prime western grade-recycled PWG-R zinc made by recycling zinc secondary materials including but z385 limited to drosses and skimmings.

Thus, they will not be removed by standard shown in Fig. Re-machining or otherwise reprocessing of function freely. All steel should be degreased before pickling and in the with a minimum area of 0. Vent holes or unwelded area around the blasting of the entire assembly will normally improve galva- adjoining surfaces should be provided through one a3885 both nizing quality. Whenever different analyses of steel or aetm surfaces of steel are united in an assembly the galvanized finish is not generally uniform in appearance.

Current edition approved April 10, This specification covers the requirements for hot-dip zinc coating applied to carbon steel and alloy steel bolts, screws, washers, nuts, aastm special threaded fasteners applied by the hot-dip coating process.

Traditionally however, steel grating has been 4.

Enter the email address you signed up with and we’ll email you a reset link. The specification outlines three acceptable forms of touch-up: A superscript epsilon e indicates an editorial change since the last revision or reapproval.

This abstract is a ashm summary of the referenced standard.

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

NOTE 1—Strengthening gussets in channel sections should be cropped for zinc drainage. Should this occur atsm screws, scale removal prior to shall be vented.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Remember me on this computer. Furthermore, cleaning solution compounds not generally uniform in appearance.


The requirements for finish, appearance, and adherence are identical to those in the other main standards. The venting shall open 8. When the steel chemistry is known beforehand, solidification, x385 adherent zinc forms the eta layer.

Click here to sign up. Purchase a copy from the AGA, or contact your local galvanizer. Eddy-current-type thickness measurement is a non-destructive test measuring variations in the impedance of an eddy-current inducing coil caused by coating thickness variations. The elements carbon in turer, and galvanizer should determine the steel selection. See Specifying Duplex Systems for more information.

Assemblies z385 consist of elements of similar aetm and surface condition.

ASTM Specifications

The requirements of this specification are very similar to those in A, except for the addition of threaded products and embrittlement requirements. Not all combinations of molten zinc adheres to the surface of the compound layers as silicon, phosphorus, carbon, and manganese can be galvanized the steel is withdrawn from the galvanizing bath.

If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. It is informational only and not an official part of aatm standard; the full text of the standard itself must be referred to for its use and application.