ASTM A90/A90M(). Standard Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings. ASTM A ZINC PLATING WEIGHT ON STEEL. This test method covers procedures for determining the weight [mass] of coating on iron or steel sheet, wire, and. A. ASTM A90 – Standards Test Method for Weight of Coating on F. ASTM A — Steel Sheet, Zinc Coated (Galvanized) or Zinc-Iron Alloy.

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ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. After stripping, wash the specimens by scrubbing them under running water, dip in hot water, and wipe or blow dry. Historical Version s – view previous versions of standard. Except as otherwise provided, the specimens should have a minimum area of 3 in.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefax asm, or service astm.

As the protection is provided by sacri? 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.

The specimen of wire may be of any length over 12 in. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.


ASTM A90/A90M – 13(2018)

Alternatively, for specimens of uniform thickness of base metal, such as a piece of plate or pipe, determine the average thickness of the stripped specimen to the nearest 0. Since the density of the steel is known 0.

Certain portions of the procedure satm determination of specimen weight [mass] have traditionally been performed in SI units, and corresponding inch-pound units are not included. Originally approved in For very small items, several pieces may have to be stripped to obtain the minimum area.

Link to Active Asmt link will always route to the current Active version of the standard. Therefore, the test should be performed under conditions of adequate ventilation. When it is not possible to determine the area accurately, as in specimens from corrugated sheets, the thickness of the stripped sheet shall be determined to the nearest 0.

It is the responsibility of the user of this standard to establish appropriate safety and health practices and aastm the applicability of regulatory limitations prior to use. 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.

Where a continuous length is not available, shorter lengths totaling over 12 in.

The weight [mass] of coating in grams on a specimen of that area is numerically equal to the weight [mass] of coating in ounces per square foot of sheet. Current edition approved April 1, See Table 1 for a statistical summary of the test results. This standard has been approved for use by agencies of the Department of Defense.


This requires about 15 to 30 s, except in the case of sherardized coatings, which require a somewhat longer time. A coating of zinc on iron or steel articles provides protection against corrosion. Unless otherwise indicated, it is intended asttm all reagents shall conform to the speci? For specific hazards statements see 5. A coating of zinc on iron or steel articles provides protection against corrosion.


Determine the weight [mass] of the specimens again, to the same precision as in the initial determination. Coating weights [masses] on all zinc-coated articles other than sheets are expressed in weight [mass] per unit area of surface.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? A fume hood is recommended for large numbers of samples or where the test is to be carried out frequently over extended periods of time.

Each of ten laboratories tested three replicates of two different materials. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.