ASTM B633-11 PDF
He is asking for more info on the difference between ASTM B [link by ed. to spec at TechStreet] type II and type III. Can anyone give me some direction on. ASTM B Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel. This specification covers requirements for electrodeposited. ASTM B Thickness classes for coatings: KEY: Classification #, Service condition, Thickness Fe/Zn 25, SC4 (very severe), 25um or ″ Fe/Zn 12, SC3.
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Does anybody know this info?
ASTM B-633 Type II vs. III zinc plating
Proceed to Checkout Continue Shopping. The appearance of corrosion products when examined with eyesight at normal reading distance shall be cause for rejection, except that white corrosion b633–11 6 mm or less from the edges of specimens shall not constitute failure. III is colorless and not expected to hold up as long as the colored II.
Test Method 13 contains several asym and also gives instructions for calculating plans lo meet special needs.
We are getting poor coverage on the as-cast surface of some steel castings using a yellow Zinc chromate. Try using an acid zinc chloride bath and see if the casting covers.
Going with clear will make it difficult to tell what is clear chromated zinc vs. Also, I found out that the casting is painted after plating. Hello Claudio and Doug, My compliments for an excellent round of questions! No it does not imply that. Responsibility for Axtm S1. B Where service conditions are valid only for coatings with chromate conversion coating.
How do you know if it is supposed to be Zinc Yellow or Zinc Clear? Not the least of which is the environmental regulations impact on the future of the selected finish.
ASTM B – Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel
Chiginally approved in Fnr thesc reasons a flat test panel should be usai to evaluate the prwess capability and the angle should be controlled to cnsure consistent Ille: Could you explain this? What process variation would produce these different results? Asmt is the responsibility of the user of this standard to establish appropriate safety and astj practices and determine the applicability of regulatory limitations prior to use. Sorry, but if you need one particular look, you must go through the ugly process of maintaining sample boards with acceptable vs.
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B633-111 and Zinc alloys, such as zinc-nickel will surely play a more significant role as metals such as Cadmium are destined for the elements’ Valhalla. As the voice of the U. A superscript epsilon jr indicates astmm editorial change since the last revision or reapproval.
Until a very few years ago chromate conversion coatings were based on hexavalent chromium, and deposited a thick film that was relatively easy to dye. Please first log in with a verified email before subscribing to alerts. Need more than one copy?
ASTM B – 11 Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel
The part is currently being produced in China and my local platers are suggesting a dye to get a blue color. Rejection approximately 1 mm thick.
Numeral indicates thickness in micrometers. When Test Metllods 1 You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. That seems a bit discretional to me.
As asm result of large-scale and long-range tests conducted by ASTM and other organizations, tllere is excellent information on the corrosion behavior of zinc arid zinc coatings.
With Clwses Fern and Ffl,nl3.