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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Such panels may arbitrarily be assigned one of two appearance ratings: 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. Assignment of Appearance Rating 7. Remember me for one v537.
Accordingly, rating numbers shall be derived from the type of defect that exists, that is: The electronic file may not be reproduced in any way.
Are you sure you want to empty the cart? One method of facilitating this comparison is to remove individual panels from their racks and place them beside other panels. For this reason, the same standard comparison photographs or charts are not suitable for use at both types of locations; photographs are more helpful in assessing panels exposed zstm marine atmospheres, whereas dot charts can be used for industrial locations Appendix X2.
There were no books found for the applied search filters. Please sign into an account b357 a subscription to this content, or email for help at support madcad. Any modifications needed to adapt the method to rating actual production parts are not considered in this practice. Current edition approved Oct. Link to Active This link will always route to the current Active version of the standard.
It is not intended for use bb537 anodic sacri? 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.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. In that case, an inspection should be made and recorded before the panels are exposed.
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.
ASTM B (Reapproved )e1_图文_百度文库
ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. For example, if a panel rates as low as 4 for protection, it may be difficult to assess any additional appearance defects.
In addition the electronic files may not be downloaded or distributed elsewhere over computer networks or otherwise. ASTM grants you a license as follows: Historical Version s – view previous versions of standard.
The right to access the electronic files of ASTM Standards is for purposes of viewing for individual use only. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Since corrosion of the substrate also detracts from appearance, the appearance rating can be no higher than the protection rating.
A panel worse than the standard for rating 1 would rate 0. Any modifications needed to adapt the method to rating actual production parts are not considered here. 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.
Enter your account email address to request a password reset: 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 One point is assessed if the defects can be classi? No further reproductions authorized.
At the option of the inspector, this difficulty may be handled as follows: 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. Typical decorative deposits exposed to marine atmospheres often tend to fail by crater rusting, 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.
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.
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Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Permanent or massive type of basis metal corrosion such as that in pinholes, bare, or?
This practice covers the recommended method for rating the condition of electroplated test panels subjected to corrosive environments for test purposes. Originally approved in Guidelines are given below, but judgment factors inevitably enter into the decision. 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 or rust stain.
ASTM B537 – 70(2013)
Therefore, the appearance rating cannot be assigned with the same degree of precision as can the protection rating. Rating 10, accordingly, is arbitrarily assigned to a panel with no defects, and the equation operates at ratings 9 and below.
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. Similarly contact and rack marks, mounting holes, and so forth, should be disregarded.
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Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Asym should be allowed to dry before inspecting them.
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. A number in parentheses indicates the year of last reapproval.