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 ASTM-A – EDITION – SUPERSEDED — See the following: ASTM-.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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Inspection, Rejection, and Retest 9. Introduction to Total Materia 7 th February ASTM specifications represent a consensus among producers, specifiers, fabricators, and users of steel mill products. NOTE 8—Depending upon product design or material thickness, or both,?
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. For thickness testing purposes, the entire surface area of each unit of product constitutes a specimen. If a sample is taken s386 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.
Minimum average thickness of coating for any individual specimen is one coating grade less than that required in Table 1.
Coatings shall conform to the requirements of Speci? The accuracy of both methods will be in? For magnetic thickness measurements, specimen excludes any area of the surface which is subject to processes such as? Materials and Manufacture 5. 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.
A number in parentheses indicates the year of last reapproval. This shall be achieved by an in-plant inspection program designed 3a86 maintain the coating thickness,? This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? The a38 has only limited control over this condition. Some higher-than-standard thicknesses may be impractical or unattainable.
Surfaces that remain uncoated after galvanizing shall be renovated in accordance with the methods in Practice A unless directed by the purchaser to leave the uncoated areas untreated for subsequent renovation by the purchaser. This standard has been approved for use by agencies of the Department of Defense. To get started, click on the standard list button in the menu bar. Practice A provides guidance on steel selection and discusses the effects of various elements in steel compositions for example, siliconthat in?
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 Articles Dynamic Strain Aging of Steels: 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.
Purchasers astmm a guarantee of heavier coatings than the minimum thicknesses shown herein should use the special requirements see 4. Part Two Medium Manganese Steels: 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.
ASTM Standard List: Coated Steels
Therefore, some articles may have a coating grade at or close to the minimum requirement shown in Table 1. If the lot size is such that the sample size cannot be doubled, then the sample size shall be as previous, but the number of widely dispersed sites at which measurements were made shall be doubled, and these sites will constitute the new sample.
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.
Coated steels Standard Number. Finding ASTM materials and standards from specific designation systems in the Total Materia database With Total Materia finding information about a metal standard specification, its current status and the materials it defines is one click away. ASTM B standard spe Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Search Knowledge Base Enter a phrase to search for: Internal threads are not prohibited from being tapped or retapped after galvanizing. NOTE 1—Each specimen comprises nominally one third of the total surface area of the article. Practices AAand A provide guidance for steel fabrication for optimum hot dip galvanizing and shall be complied with in both design and fabrication.
However, by agreement the purchaser is not prohibited from making tests which govern the acceptance or rejection of the materials in his own laboratory or elsewhere.
Inchpound units and SI units are not necessarily exact equivalents. NOTE 2—The presence in steels and weld metal, in certain percentages, of some elements such as silicon, carbon, and phosphorus tends to accelerate the growth of the zinc-iron alloy layer so that the coating may have a matte?
ASTM Standard List: Coated Steels :: Total Materia Article
The thickness thus determined is a point value. Enter a phrase to search for: Current edition approved October 10, 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. Release DataPLUS, a new module providing corrosion data, material joining information, material dimensions and tolerances and coatings information helps drive even more accurate material selections!
New Developments in Total Materia 10 th January Total Materia remains the only tool which will be used for this purpose.
In the case of orders in SI units, all testing and inspection 1 This speci? With Total Materia finding information about a metal ast, specification, its current status and the materials it defines is one click away. Lumps, projections, globules, or heavy deposits of zinc which will interfere with the intended use of the material will not be permitted.