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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From beautiful Pine Beach New Jersey: This standard has been approved for use by agencies of the Department of Defense.
Zinc Plating: ASTM B Type II vs. III
Electroplated springs and other parts subject to? Did you ever get the answers you were looking for? Iridescent and Colorless passivation is thin and has low electrical resistance. No it does not imply that. I will be attending the ASTM B8 committee meetings in Philly later this week and will mention this letter to the sub-committee chair responsible for the B spec.
I’ve seen this done less commonly on chromated zinc plating than on chromated aluminum. It does not cover electrodeposited zinccoated steel wire or sheets see Speci? Zinc coating frfe colorless RoHS compliance passivation. To me “bright blue” does not usually literally mean “bright blue” like the sky or a robin’s egg. The revision addresses RoHS concerns and specifically allows non-hexavalent chromate treatments.
Also, I found out that the casting is painted after plating. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
ASTM B-633 Type II vs. III zinc plating
Our Zinc coating is carried out according to: Could you explain this? The part is currently being produced in China and my local platers are suggesting a dye to get a blue color. III is colorless and not expected to hold up as long as the colored II. Current atsm approved Jan. Conditions affecting the electroplating of specimens, including the spacing, plating media, bath agitation, temperature, etc.
Properly performed, statisitical process control will assure coated products of satisfactory quality and will assure the amount of acceptance inspection. To minimize problems of this sort, the speci? I’m not a zinc plater, but ‘Type II Clear’ seems self-contradictory.
The size of the sample and the criteria for compliance are determined by the application of statistics. Zinc plating is usually considered a functional coating, not a decorative one. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Try using an acid zinc chloride bath and see if the casting covers. So if I’m interpreting this correct, there is both a color difference and a salt spray difference.
Regarding the question asked in letter ; Type II zinc plating vs. For example, a cold-rolled steel surface shall not be used to represent a hot-rolled steel surface. A light yellow would be better than a clear. There are different passivation colors: In this event, the basis metal shall be subjected to such polishing or buffing operations as are necessary to yield deposits with the desired?
Electrical charasteristics As much as the last layer of the passivation is thin the electrical resistivity is low. When Test Methods BBor B are used, remove the supplementary treatment prior to testing.