ASTM B Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel. Buy ASTM B SPECIFICATION FOR ELECTRODEPOSITED COATINGS OF ZINC ON IRON AND STEEL from SAI Global. ASTM B Type II and III zinc chromate plating Q&A’s. In my opinion a Mil-C- [link is to free spec at Defense Logistics Agency, ] plating.

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Zinc Plating: ASTM B Type II vs. III

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.

Hello Claudio and Doug, My compliments for an excellent round of questions! It’s not possible to diagnose a finishing problem or the hazards of an operation via these pages.

This is not considered a decorative finish and will not generate matching parts. I need to specify platings that do not contain Hexavalent Chromium for parts that will be used in the automotive industry.

Yellow-iridescent Black Olive Green. The coating shall not be stained or discolored.

ASTM B-633 Type II vs. III zinc plating

Iron metals rust relative quickly, even in a non-corrosive environment. Does anybody know this info? To minimize your searching efforts and to offer multiple viewpoints, we’ve combined some threads into the dialog you’re viewing.

For corrosion resistance requirements, asmt Table 2. Does plating make that big a difference knowing that it’s going to be painted also? Surfaces to be painted should be ONLY lightly chromated.


Electroplated springs and other parts subject to? It definitely implies Hex Chrome.

Zinc Coating

Did you ever get the answers you were looking for? 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 atsm.

All I need to know is what color the types are. Baked parts shall not crack or fail by fracture when tested in accordance with Any information would be well received. The exterior visual determined according to last layer. It does not cover electrodeposited zinccoated steel wire or sheets see Speci?

The size of the sample and the criteria for compliance asgm determined by the application of statistics. Rest in peace, Ken. BBBBand B For example, a cold-rolled steel surface shall not be used to represent a hot-rolled steel surface.

The values are only relative, since individual studies in various parts of the world have resulted 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. Please forgive any resultant repetition or failures of chronological order. The rust not awtm harms the aesthetically smooth look, but also its mechanic needs. Due to the impracticality of forging or casting separate test specimens, hot-rolled steel specimens may be used to represent forged and cast steel articles.

Olive green passivation is a 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. You can get the same finish only for blue and black hex fere with tri substitutes, but not for yellow or olive as of yet. In this event, the basis metal shall be subjected to such polishing or buffing operations as are necessary to yield deposits with the desired?


Ray Kremer Stellar Solutions, Inc. The Zinc coating on the steel does not last shiny for long, and so a further thick layer coating is added, called passivation.

He passed away May 14, The coating is made according to demand, where the distribution is as follows: The baking treatment shall be done before the application of the supplementary treatments and within 4 h of removal from the last process.

Can fgee give me some direction on how to get the customer to accept b6333 to clear. Zinc coating with colorless V633 compliance passivation. The separate specimens shall be of a basis metal equivalent to that of the articles represented. The chromate, passivate, or supplemental? In 24 years I have only been asked this question once before and I presume it involves phosphating over zinc plating for those heavy phosphating grammage applications, where normal phosphating will not provide enough zinc phosphate that is required in the deposit.

III zinc plating A discussion started in but continuing through Q.