Astm a 123 pdf

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PDF Drive is your search engine for PDF files. As of today we have 78,, eBooks for you to download for free. No annoying ads, no download limits, enjoy . A/AMSpecification for Zinc (Hot-Dip Galvanized) Coatings on Iron and work are summarized in Table 1 and Table 1A for ASTM A/AM, Table. ASTM AAM Standard Specification for Zinc_能源/化工_工程科技_专业 资料。Standard Specification for Zinc (Hot-Dip Galvanized).


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This standard is issued under the fixed designation A /A M; the number 1 This specification is under the jurisdiction of ASTM Committee A05 on. A / AM Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Standard + Redline PDF Bundle, 18, $, ADD TO CART. Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel. coating (galvanizing) by the hot-dip process on iron and steel shall be done using the metric equivalent of the test or. centrifuged or otherwise handled to remove excess zinc (such ment of Hot-Dip Galvanized Structural Steel.

If Test Method 8. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? PO Box C A minimum of five measurements should be made within the volume of each specimen The galvanizing of separate reinforcing steel bars shall be in accordance with Speci? NOTE 4—The coating thickness grades in Table 1 represent the minimum value obtainable with a high level of con?

Surface conditions related to de? The zinc coating on threaded components of articles galvanized under this speci? 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.

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 Such inaccessible areas, for example, would be the internal surfaces of certain tanks, poles, pipes, tubes, and so forth.

NOTE 6—The requirements for the? 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.

NOTE 7—Items which are prepared for galvanizing by abrasive cleaning will generally develop a thicker coating with a moderately rougher surface. In addition, the purchaser should anticipate the need for test batches or extra preparation steps, or both, such as blasting before galvanizing or other methods, to attempt to reach the higher requirements with consistency. Some higher-than-standard thicknesses may be impractical or unattainable.

Except for local excess coating thickness which would interfere with the use of the product, or make it dangerous to handle edge tears or spikes , rejection 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.

Since surface smoothness is a relative term, minor roughness that does not interfere with the intended use of the product, or roughness that is related to the as-received un-galvanized surface condition, steel chemistry, or steel reactivity to zinc 5 6. Internal threads are not prohibited from being tapped or retapped after galvanizing. Coatings shall conform to the requirements of Speci? Lumps, projections, globules, or heavy deposits of zinc which will interfere with the intended use of the material will not be permitted.

Plain holes of 1? 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. The pieces shall be handled so that after galvanizing they will not freeze together on cooling. NOTE 8—Depending upon product design or material thickness, or both,? NOTE 9—Although some material may be formed after galvanizing, in general the zinc coating on the articles covered by this speci?

Sampling 7. Unless otherwise agreed upon between the galvanizer and the purchaser, or established within this speci? For test by the purchaser after delivery, the lot consists of the single order or the single delivery load, whichever is the smaller, unless the lot identity, established in accordance with the above, is maintained and clearly indicated in the shipment by the galvanizer.

Otherwise, the test specimens shall be selected at random from each lot. In this case, the minimum number of specimens from each lot shall be as follows: 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.

Such a plan is contained in Test Method B which addresses sampling procedures for the inspection of electrodeposited metallic coatings and related? 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. Test Methods 8. The specifying of tests for adhesion and embrittlement shall be subject to mutual agreement between the galvanizer and purchaser.

Visual inspection of the coating shall be made for compliance with the requirements. For each specimen as described in 3. The average of the? A specimen must be evaluated for each steel category and material thickness within the requirements for each specimen of the test article.

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.

123 astm pdf a

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.

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. The thickness of coating thus obtained is the test article coating thickness.

The accuracy of both methods will be in? These tests shall not be required unless strong evidence of embrittlement is present. Inspection, Rejection, and Retest 9.

123 pdf a astm

This shall be achieved by an in-plant inspection program designed to maintain the coating thickness,? The galvanizer shall afford the inspector all reasonable facilities to satisfy him that the zinc coating is being furnished in accordance with this speci?

Pdf astm a 123

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. 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.

In such case, the now-smaller lot shall be treated as a new lot for purposes of inspection and acceptance.

When speci? Keywords The thickness thus determined is a point value. No less than? The average of no less than? 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.

This new sample shall be measured using magnetic thickness gages which have been calibrated for accuracy against reference material thickness standards. 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 non-conforming articles, or to renovate the nonconforming articles in accordance with 6. The test method for the new sample shall be selected by mutual agreement between the purchaser and galvanizer.

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.

The adhesion shall be considered inadequate if the coating? Do not use testing carried out at edges or corners points of lowest coating adhesion to determine adhesion of the coating. Likewise, do not use removal of small particles of the coating by paring or whittling to determine failure.

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. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. The zinc coating on threaded components of articles galva- nized under this specification shall conform to that required in galvanizing or other methods. Surface roughness of articles to be painted or powder coated and the smoothing of the galvanized coating before painting or powder coating shall be mutually determined by the galvanizer and the purchaser.

These zinc skimmings are not cause for rejection as the coating beneath these skimmings is intact and will provide the antici- pated corrosion protection. Except for local excess coating thickness which would interfere with the use of the product.

A minimum of five measurements should be made within the volume of each specimen Some zinc skimmings can be brushed off the surface or will be washed off in the rain or condensation that gathers on the part as it weathers in the atmosphere. Once mined by the galvanizer and the purchaser. Internal threads are not prohibited from being of the uncoated area shall be allowed to exceed 1 in.

Such inaccessible areas. Further preparation the parts have left the galvanizing facility there shall be no of galvanized coatings for painting or powder coating includ- limit on the size of the area subject to renovation. The pieces shall be in the uncoated areas using paints containing zinc dust shall be handled so that after galvanizing they will not freeze together 3.

The size of the uncoated area subject to renova.

ASTM A 123-17

NOTE 9—Although some material may be formed after galvanizing. The minimum thickness of the renovation allowable maximums from 6. Sampling because of different steels or different thicknesses of a given steel being used in an assembly. The total of the uncoated areas interfere with the intended use of the material will not be subject to renovation by one of the methods of A shall also permitted. When uncoated areas requir. They do not address the matter of measured coating thickness variations that can be encountered 7.

Surface roughness of articles to be painted or not exceed 36 in. Marks in the zinc coating caused by tongs or other areas for repairs using zinc metallizing or zinc solder shall be items used in handling the article during the galvanizing the class required by the thickness grade for the appropriate operation shall not be cause for rejection unless such marks steel material category in Table 1 in accordance with the have exposed the base metal and the bare metal areas exceed requirements of 6.

The length and width purchaser. Coatings shall conform to in only one of the two dimensions. If Test Method 8. Unless otherwise agreed upon grades comprising each test article is the average coating between the galvanizer and the purchaser. A specimen must be evaluated for this specification. For test by the purchaser after delivery. The thickness thus determined is specimen is the specimen coating thickness. The weight of accordance with this specification. The specifying of tests for coating per unit area thus determined is converted to equivalent adhesion and embrittlement shall be subject to mutual agree.

In this case. Such a plan is contained in Test article coating thickness. The thickness of coating thus obtained is of the coating shall be made for compliance with the require.. Visual inspection down as appropriate. For each accuracy of both methods will be influenced by the accuracy to which the surface area of the articles tested can be determined..

Test Methods methods described in 8. The methods described in 8.

The first 8. The dance with Test Method B unless the methods described in average of the five or more measurements thus made for each The weight of coating per unit area 1 to 3 8 thus determined is converted to equivalent coating thickness 3 to 10 13 10 and over 20 values in accordance with Table 2 rounding up or down as appropriate.

No less than five such measurements shall be 8. NOTE 11—Both the stripping method and the weighing before and after 8. The galvanizer shall afford the inspector all cannot be doubled. If the lot is found to be nonconforming by the new inspected shall be used for resampling of a sorted lot.

Pdf 123 astm a

If the purchaser is not prohibited from making tests which govern the lot is found to be nonconforming by the new sample. This new sample shall be measured 9. These tests shall not When specified in the purchase order or contract.

ASTM AAM Standard Specification for Zinc_百度文库

By sample. Keywords 9. The adhesion shall regalvanized and again submitted for inspection and test at be considered inadequate if the coating flakes off in the form of which time they shall conform to the requirements of this a layer of the coating so as to expose the base metal in advance specification.

Certification adhesion of the coating.. Do not use testing carried out at edges or corners points of lowest coating adhesion to determine In such case. The average of no less than five such This shall be achieved by an in-plant inspection program measurements is the specimen coating thickness. The test method for the new sample shall conforming articles. The inspector representing the purchaser shall have 8. If the lot size is such that the sample size being performed.

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Astm A123 Books

Users of this standard are expressly advised that determination of the validity of any such patent rights. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. MA PO Box C ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards..

PA Flag for inappropriate content. Related titles. Jump to Page. Search inside document. This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade TBT Committee.

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