Find the most up-to-date version of ASTM B at Engineering Purchase your copy of ASTM B – 70() as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards. ASTM B + REDLINE: STANDARD PRACTICE FOR RATING OF ELECTROPLATED PANELS SUBJECTED TO ATMOSPHERIC EXPOSURE – INCLUDES.
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R is rounded off to the nearest whole number, leading to the tabulation given in Table 1. Print 1 2 3 4 5 page sstarting from page current page.
For example, if a panel rates as low as 4 for protection, it may be difficult to assess any additional appearance defects. Panels shall be assigned separate rating numbers based on the ability of the coating to protect the substrate from corrosion protection ratingand the overall appearance of panels as affected by deterioration of the coating itself appearance rating.
Accordingly, this practice assigns separate ratings to 1 appearance as affected by corrosion of the substrate and 2 appearance as affected by deterioration of the coating itself. This abstract is a brief summary of the referenced standard.
Enter your personal account email address to request a password reset: There were no books found for the applied search filters. A superscript epsilon e indicates an editorial change since the last revision or reapproval. If you like to setup a quick demo, let us know at support madcad. ASTM grants you a license as follows: Panels should be allowed to dry before inspecting them. Although these functions overlap, they can be evaluated separately and it is frequently desirable to do so.
For example, it may be agreed that any panel with a protection rating of 5 is so unacceptable that an appearance rating has no meaning.
NOTE 6—If fractional rating was used for the protection number, this would result in a fractional appearance rating; in that case the fractional appearance rating may be retained, or rounded off to the nearest whole number, provided, however, that the appearance rating may not be higher than the protection rating.
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Difficulties may be encountered in attempting to rate severely corroded panels. Search book title Enter keywords for book title search.
Since corrosion of the substrate also detracts from appearance, the appearance rating can be no higher than the protection rating. Types of Defects 4. These photographs and charts4 are 10 by 15 cm 4 by 6 in. 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.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Original adjunct produced in Such panels may arbitrarily be assigned one of two appearance ratings: Typical decorative g537 exposed to marine atmospheres often tend to fail by crater b5377, whereas in industrial atmospheres, they are more likely to exhibit pinpoint rusting; and the latter atmosphere also tends to be more severe with regard to degradation of the coating system but somewhat less severe with regard to basis metal corrosion.
Current edition approved Oct. A number in parentheses indicates the year of last reapproval. It has been used also for rating similar panels that have been subjected to accelerated tests such as those covered by Practice B, Method B, Test Method B, and Test Method B Content only available by subscription.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Corrosion pits probably not extending through to the basis metal—that is absence of obvious basis metal corrosion products bleeding therefrom.
If dirt, salt deposits, and so forth, make it impractical to inspect them, panels may be sponged with a mild soap solution followed by water rinse; but no pressure should be exerted in this procedure such as would tend to upgrade the rating by, for example, cleaning off rust b573 rust stain. Inspection should be made in the as-is condition, and defects to be taken into account are only those that can be seen with the unaided eye at normal reading distance.
Are you sure you want to empty the cart? This practice covers the recommended method for rating the condition of electroplated test panels subjected to corrosive environments for test purposes. It is not intended for use with anodic sacri? The right to access the asmt files of ASTM Standards is for purposes of viewing for individual use only.
Similarly contact and rack marks, mounting holes, and so forth, should be disregarded. If there are surface defects not accounted for in the protection rating, the appearance rating will be one or more units lower than the protection rating. Please sign into an account with a subscription to this content, or email for help at support madcad. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.
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ASTM B537 – 70(2013)
One point is assessed if the defects can be classi? Remember me for one month. Such procedure shall be con?
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. Link to Active This link will always route to the current Active version of the standard.
The standards represent as nearly as possible the maximum amount of corrosion permissible for a given rating; there is a standard for each rating 1 through 9.
b5537 The electronic file may not be reproduced in any way. Assignment of Appearance Rating 7. Guidelines are given below, but judgment factors inevitably enter into the decision. For example, surface pits that begin to detract from re? Therefore, the appearance rating cannot be assigned with the same degree of precision as can the protection rating.