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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It is recommended that the following appropriate recommended practices and guides be used: To determine the nature of accuracy or revision level please verify asm data with current releases: High strength steels tensile strength greater than MPa shall not be electroplated. NOTE 1—Surfaces should be activated as soon as possible following baking and handled carefully to avoid contamination and maintain an active ast for post processing.
Olive green and Black passivation is thick and has high electrical 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. This standard has been approved for use by agencies of the Department of Defense.
ASTM B – Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel
B33 Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. Electroplated springs and other parts subject to?
Iridescent and Colorless passivation is thin n633 has low electrical resistance. NOTE 5—Thickness methods that rely on the purity of the zinc deposit may not be sufficiently accurate when evaluating coatings produced from non-cyanide zinc solutions.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Responsibility for Inspection S1.
This standard is not included in any packages. The separate specimens shall be of a basis metal equivalent to that of the articles represented. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM aztm the above address or at phonefaxor service astm.
The type of passivation is determined according to the required characteristics, and is divided into groups:. Add to Alert PDF. Not the least of which is the environmental regulations impact on the future of the selected finish. A number in parentheses indicates the year of last reapproval. Corrosion Resistance Requirements Types.
Additional types have been added to permit non-chromate passivate treatments to be used in replacement of hexavalent chromium.
The purchaser retains the right to perform any of the inspections and tests set forth in this speci? The designer and engineer must take into account several considerations to stay at the forefront of the finish potential. The purchaser astmm similarly require that a report of the test results be furnished.
The black layer has also additional target —prevention of light reflection from the part and is used for optical parts. We have no amendments or corrections for this standard. If these heat treatments are not required, the purchaser shall specify in the ordering information their exception 5. Test Method B provides a default plan if one is not speci?
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
It does not cover zinc-coated wire or sheets. Yellow-iridescent Black Olive Green. Due to astn impracticality of forging or casting separate test specimens, hot-rolled steel specimens may be used to represent forged and cast steel b363.
When such areas are designated, and thus made subject to minimum thickness requirements, the purchaser and the manufacturer shall recognize the necessity for either thicker deposits on other areas or for special racking. Go to main content.
This standard is also available to be included in Standards Subscriptions. Current edition approved Jan. The rust not only harms the aesthetically smooth look, but also its mechanic needs. Test Method B contains several plans and also gives instructions for calculating plans to meet special needs. SC 4 very severe.
Last previous edition approved in as B — 98e1. 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. B Where service conditions are valid only for coatings with chromate conversion coating. As much as the last layer of the passivation is thin the electrical resistivity is low.
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. The Zinc coating on the steel does not last shiny for long, and so a further thick layer coating is added, called passivation.