ASTM-A › Zinc Coating (Hot-Dip), Assembled Steel Products. ASTM-A – EDITION – SUPERSEDED — See the following: ASTM-. in Specifications A and A This ASTM Standards A47/ A47M 1 This specification is under the jurisdiction of ASTM Committee A05 on. ASTM AAM Standard Specification for Zinc – Standard A and A shall be done using the metric equivalent of the test.
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For a unit of product whose surface area is equal to or less than in. In such cases, the precision and accuracy of the coating thickness measuring technique should be taken into consideration when rejecting such articles for coating thickness below that required by this speci? Part Two Medium Manganese Steels: A number in parentheses indicates the year of last reapproval.
ASTM Standard List: Coated Steels
Practices AAztmand A provide guidance for steel fabrication for optimum hot dip galvanizing and shall be complied with in both design and fabrication. Search Knowledge Base Enter a phrase to search for: NOTE 9—Although some material may be formed after galvanizing, in general the zinc coating on the articles covered by this speci?
Minimum average thickness of coating for any individual specimen is one coating grade less than that required in Table 1.
Current edition approved October 10, The test method for the new sample shall be selected by mutual agreement between the purchaser and galvanizer.
NOTE 7—Items which are prepared for galvanizing by abrasive cleaning will generally develop a thicker coating with a moderately rougher surface. Plain holes of 1? 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.
These tests shall not be required unless strong evidence of embrittlement is present. The thickness of coating thus obtained is the test article coating thickness. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
The thickness of coating thus obtained is the test article coating thickness, or in the case of a specimen removed from a test article, is the specimen average coating thickness.
Marks in the zinc coating caused by tongs or other items used in handling the article during the galvanizing operation shall not be cause for rejection aztm such marks have exposed the base metal and the bare metal areas exceed allowable maximums from 6. Articles Dynamic Strain Aging of Steels: Some higher-than-standard thicknesses may be impractical or unattainable.
While most coating thicknesses will be in excess of those values, some materials in each category may be less reactive for example, because of chemistry or surface condition than other materials of the steel category spectrum. Coatings shall conform to the requirements of Speci? NOTE 8—Depending upon product design or material thickness, or both,? The average of no less than?
ASTM A – Withdrawn Specification for Zinc Coating (Hot-Dip) on Assembled Steel Products
In the case of any such article containing more than one material category or steel thickness range as delineated in Table 1, that article will contain more than one specimen see Fig.
This standard has been approved for use by agencies of the Department of Defense. Introduction to Total Materia 7 th February If a zinc alloy is used as the primary feed to the galvanizing bath, then the base material used to make that alloy shall conform to Speci? Practice A provides guidance on steel selection and discusses the effects of various elements in steel compositions for example, siliconthat in?
The galvanizer has only limited control over this condition. The galvanizing of separate reinforcing steel bars shall be in accordance with Speci?
Surface conditions related to de? Closed Rib Steel Pipe with Diameter of 36 in. Total Materia remains the only tool which will be used for this purpose. ASTM B standard spe The zinc coating on threaded components of articles galvanized under this speci?
If Test Method B is used, the level of sampling shall be agreed upon between the galvanizer and the purchaser at the time the coating order is placed.
Coated steels Standard Number. If a sample is taken as representing the lot for acceptance, the sample shall be taken at random from the lot without regard to the perceived quality or appearance of any individual unit in the lot being sampled.
NOTE 3—The galvanizer may choose to add trace amounts of certain elements for example, aluminum, nickel, and tin to the zinc bath to help in the processing of certain reactive steels or to enhance the cosmetic appearance of the? With Total Materia finding information about a metal standard specification, its current status and the materials it defines is one click away.
Metallic coated carbon steel wire coated at size for mechanical springs Composite ribbed steel pipe, pre-coated and polyethylene lined sewer pipe application Flexible poly vinyl chloride PVC gaskets used in connection of water closets to sanitary drainage system For more information on the ASTM designation system see our related article: Therefore, some articles may have a coating grade at or close to the minimum requirement shown in Table 1.
Except for local excess coating thickness which would interfere with the use of the product, or make it dangerous to handle edge tears or spikesrejection for nonuniform coating shall be made only for plainly visible excess coating not related to design factors such as holes, joints, or special drainage problems see Note 6.