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
The following data, based on worldwide testing, can be used to compare the behavior of electrodeposited coatings of zinc in various atmospheres. The chromate, passivate, or supplemental? That seems a bit discretional to me. Responsibility for Inspection S1. The sampling plan used for the inspection of the quality coated article shall be agreed upon between the purchaser and producer. A light yellow would be better than a clear. Try using an acid zinc chloride bath and see if the casting covers.
Additional types have been added to permit non-chromate passivate treatments to be used in replacement of hexavalent chromium.
The rust not only harms the aesthetically smooth look, but also its mechanic needs. In this event, the basis metal shall be subjected to such polishing or buffing operations as are necessary to yield deposits with the desired?
I am not getting the difference between this. If the purchaser does not specify an exception to heat treatment, then the plater shall use Table 1 in B to determine the appropriate heat treatment for the steel based on its tensile ftee. 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.
He passed away May 14, The baking treatment shall be done before the application of the supplementary treatments and within 4 h of removal from the last process.
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.
Test Method B contains several plans and also gives instructions for calculating plans to meet special needs. The Zinc coating on the steel does not last shiny for long, and so a further thick layer coating is added, called passivation.
Test Method B provides a default plan if one is not speci?
Put the chromate on light. Sorry, but if you need satm particular look, you must go through the ugly process of maintaining sample boards with acceptable vs. Rest in peace, Ken. These methods would include BBand B Going with clear will make it difficult to tell what is clear chromated zinc vs.
Don Penzenik – Elkhart, Indiana. Zinc plating is usually considered a functional coating, not a decorative one. How do you know if it is supposed to be Zinc Yellow or Zinc Clear? B63 test must yield a numeric value and certain statistical requirements must be met.
It would be “bright, blue” — that is, shiny and metallic but with a bluish rather than a yellowish cast. To calculate it is very difficult, as the plating is a few molecules thick.
Decorative charastreistics The exterior visual determined according to last layer. The answer is Yes. All I need to know is what color the types are. Packaging and Packing August 31, A. Properly performed, statisitical process control will assure coated products of satisfactory quality and will assure the amount of acceptance inspection.