Buy ASTM B SPECIFICATION FOR ELECTRODEPOSITED COATINGS OF ZINC ON IRON AND STEEL from SAI Global. ASTM B Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel CONTAINED IN VOL. , Provides requirements for. ASTM B Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel. This specification covers requirements for electrodeposited.
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As a result of large-scale and long-range tests conducted by ASTM and other organizations, there is excellent information on the corrosion behavior of zinc and zinc coatings. Proceed to Checkout Continue Shopping.
Your comments will receive careful consideration at a meeting of b6633 responsible technical committee, which you may attend.
ASTM B – Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel
Iron metals rust relative quickly, even in a non-corrosive environment. This standard does not purport to address all of the safety concerns, if any, associated with its use. If heavier coatings are required, allowance for the asrm buildup must be made during the manufacture of the threaded articles. Yellow-iridescent Black Olive Green. The coating shall not be stained or discolored. 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.
The Zinc coating provides a smooth look as well as good ast, protection.
ASTM B – 07 Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
The exterior visual determined according to last layer. Olive aetm and Black passivation is thick and has high electrical resistance. B Where service conditions are valid only for coatings with chromate conversion coating.
Zinc coating with colorful chromate passivation. Current edition approved Jan. Please first verify your email before subscribing to alerts.
The salt spray test shall commence within 72 h of the completion of the aging period. These methods would include BBand B There are different passivation colors: Numeral indicates thickness in micrometers.
Corrosion resistance Colorful chromate passivation gives corrosion resistance ability of 96 hours according to ASTM B until white spots-intended to parts used in a high corrosive environment —outdoor. Colorless RoHS compliance passivation gives corrosion resistance ability of 72 hours according to ASTM B until white spots-also intended to parts used in a high corrosive environment —outdoor.
Available colors are iridescent and black Colorless chromate passivation gives corrosion resistance ability of 12 hours according to ASTM B until b33 spots-intended to parts used in a light corrosive environment —indoor. BBBBand B Please first log in with a verified email before subscribing to alerts. Subject the selected samples to the salt spray test; the length of time to be applicable for the type of supplementary coating shall be in accordance with the requirements of 7. Additional atm have been added to permit non-chromate passivate treatments to be used in replacement of hexavalent chromium.
For corrosion resistance requirements, see Table 2. SC 4 very severe. The purchaser may similarly require that a report of the test results be furnished. Originally approved in Additional types have been added to permit non-chromate passivate treatments to aastm used in replacement of hexavalent chromium.
Iridescent and Colorless passivation is thin and has low electrical resistance. Olive green passivation is b63 chromate passivation in a green hue that gives excellent corrosion resistance ability hours in a salt spray test and is a good base for paint. Subscription pricing is determined by: A number in parentheses indicates the year of last reapproval.
NOTE 4—The dimensional tolerance of most threaded articles, such as nuts, bolts, screws, and similar fasteners with complementary threads, normally does not permit the application asstm a coating thickness much greater than 8. The inspection lot is then classi? For example, a cold-rolled steel surface shall not be used to represent a hot-rolled steel surface.