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 ASTM-A – EDITION – SUPERSEDED — See the following: ASTM-.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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ASTM A – Withdrawn Specification for Zinc Coating (Hot-Dip) on Assembled Steel Products
The thickness thus determined is a point value. These designations often apply to asttm products, for example A is applicable to cold-heading quality carbon steel wire for tapping or sheet metal screws.
The thickness of coating thus asstm is the test article coating thickness, or in the case of a specimen removed from a test article, is the specimen average coating thickness. Click here to see more. Likewise, do not use removal of small particles of the coating by paring or whittling to determine failure.
NOTE 5—Inaccessible surface areas are those which cannot be reached for appropriate surface preparation and application of repair materials as described in Practice A ashm The use atm these trace elements is permitted provided that the bulk chemistry of the galvanizing bath is at least 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 unless such marks have exposed the base metal and the bare metal areas exceed allowable maximums from 6.
Inspection, Rejection, and Retest 9. The sample consists of one or more test articles.
ASTM-A | Zinc Coating (Hot-Dip), Assembled Steel Products | Document Center, Inc.
Number of Pieces in Lot 3 or less 4 to to 1 1 to 3 3 to 10 10 and over Number of Specimens all 3 5 8 13 20 NOTE 10—Where a number of identical items are to be galvanized, a statistical sampling plan may be desired. If the lot is found to be nonconforming by the new sample, the galvanizer has the right to sort the lot for conforming articles by individual test, to re-galvanize nonconforming articles, or to renovate the nonconforming articles in accordance with 6.
In the case of an article containing more than one material category or steel thickness range as delineated in Table 1, that article will contain more than one specimen, as appropriate see Fig.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. NOTE 7—Items which are prepared for galvanizing by abrasive cleaning will generally develop a thicker coating with a moderately rougher surface.
Such a plan is contained in Test Method B which addresses sampling procedures for the inspection of electrodeposited metallic coatings and related?
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 a86 being sampled. The mass, shape, and amount adtm cold working of the product being galvanized may 3a86 affect this condition.
The weight of coating per unit area thus determined is converted to equivalent coating thickness values according to Table 2 rounding up or down as appropriate. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Plain holes of 1? Our mission is simple; to make Total Materia the one-stop place and first choice of engineers world wide.
To get started, click on the standard list button in the menu bar. Otherwise, the test specimens shall be selected at random from each lot. The average of no less than? These tests shall not be required unless ast, evidence of embrittlement is present.
Coated steels Standard Number. Part Two Medium Manganese Steels: The weight of coating per unit area thus determined is converted to equivalent coating thickness values in accordance with Table 2 rounding up or down as appropriate.
A specimen must be evaluated for atsm steel category and material thickness within the requirements for each specimen of the test article. The result list consists of over ASTM metal standards.
Each system shall be used independently of the other without combining values in any way. Purchasers desiring a guarantee of heavier coatings than the minimum thicknesses shown herein should use the special requirements see 4. By mutual agreement, the galvanizer is not prohibited from submitting the lot remaining after sorting and removing nonconforming articles without replacement of the nonconforming articles.
Practices AAand A provide guidance for steel fabrication for optimum hot dip galvanizing and awtm be complied with in both design and fabrication. The requirements for malleable iron castings to be galvanized shall be as stated in Speci?
The galvanizer shall afford the inspector all reasonable facilities to satisfy him that the zinc coating is being furnished in accordance with this speci? Total Materia has allowed us to solve in a definite a368 all problems we had for the search of alternate materials in foreign countries.
In the case of orders in SI units, the values in Table 1, shall be applicable as metric units in micrometres. This article contains a list of standards that covers among other a36 The galvanizer has only limited control over this condition. 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.
ASTM Standard List: Coated Steels
Search Knowledge Base Enter a phrase to search for: The elements can be added to the galvanizing bath as part of a pre-alloyed zinc feed, q386 they can be added to the bath by the galvanizer using a master feed alloy. Materials and Manufacture 5. Unless otherwise agreed upon between the galvanizer and the purchaser, or established within this speci? ASTM specifications represent a consensus among producers, specifiers, fabricators, and users of steel mill products.
In this case, the minimum number of specimens from each lot shall be as follows: Total Materia remains the only tool which will be used for this purpose. NOTE 6—The requirements for the? NOTE 1—Each specimen comprises nominally one third of the total surface area of the article. Do not use testing carried out at edges or corners points of lowest coating adhesion to determine adhesion of the coating.
Your comments are invited x386 for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Some higher-than-standard thicknesses may be impractical or unattainable. Introduction to Total Materia 7 th February They do not address the matter of measured coating thickness variations that can be encountered because of different steels or different thicknesses of a given steel being used in an assembly.
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