zinc plating thickness

Rather, a thickness is specified based on the service conditions. or. Plating Thickness – The zinc plating shall be a minimum thickness of.0002 inch (5 µm) on all significant surfaces. A. Hi manoj. Our preplate gages have been setup to allow for .0001-.00035" plate thickness. In the most corrosive environments, particularly those with a risk of salt spray, zinc plating alone will probably be insufficient. "button": { How Google uses data when you visit this site. For some applications, designers may opt to use zinc-nickel plating instead of zinc plating for further corrosion resistance, the above table will not be applicable. For example, to improve corrosion resistance, zinc coatings are commonly employed over steel. Please tell us what thickness you require on your purchase order. ---- The coating densities, in terms of thickness required to equal 1 oz of zinc per square foot of surface, are: Coating. A. Gary & Ted, This might sound as a very stupid comment, but we have encountered this problems in the past and some clients don't consider that the thickness of the deposit has to be counted double when considering a round diameter. Q. Dear all, is one of the better known standards which defines required thickness vs. service conditions: That doesn't strike me as unreasonable as long as there are no industry standards which you have agreed to meet which call for the thicker plating. Thickness to reach 1 oz/ft 2. I hope this helps Enrique. We do not recommend powder coating. A discussion started in I need to zinc plate (and gold passivate) a screw of dia. Q. "background": "#fff", The customer has mentioned reduction in effective dia. This page just gives general suggestions and our specialists will be able to provide more in-depth information. The coating is entirely pure zinc, which has a hardness about one-third to one-half that of most steels. 2003 but continuing through 2019. } Zinc Plating is commonly used in a variety of industries, including industrial and defense. thread form, extensive print changes, and conflict with our existing customer prints. It is suggested that you have the part zinc plated and then paint any exposed areas. E&OE. Thickness in each side of the part. How can I specify the plating; what is the standard I have to refer to? new LazyLoad({ Light industry (excluding exposure to corrosive substances), in domestic garden areas covered by roofs. What should be minimum coating thickness for zinc plating on mounting pan of electrical load centers? If I'm reading SAE J476A [affil. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful. 13 µm for severe service Thickness has almost no effect on the resistance to “white rust” because this involves the coating itself corroding. What is a safe plating that should not cause binding in the threads for a #6 screw? Q. })}); 60,000 Q&A topics -- Education, Aloha, & Fun, manufacturing engineer - Riyadh, Centeral, Saudi Arabia, -- this entry appended to this thread by editor in lieu of spawning a duplicative thread, ©1995-2020 finishing.com, Inc., Pine Beach, NJ, How Google uses data when you visit this site. There is no standard thickness which is irrespective of the application. Good luck. All of these increase the original diameter. Concentrations of lead, mercury, poly-brominated Biphenyls (PBB) and polybrominated diphenyl ethers (PBDE), in any as deposited homogenous material must be less than 1000 PPM or 0.1%. 25 µm for very severe service We have experienced substantial fallout on external threaded parts requiring zinc plating that do not pass after-plate thread ring gages. See our, Offices, domestic premises (excluding kitchens and bathrooms). Now, what are you using as a nut? 5 µm for mild service Is the class 3A gaging option more forgiving for a thicker plating allowance (.0002-.0005")? I am familiar with plating but not with IEEE [link is to specs at TechStreet] or NEMA [link is to specs at TechStreet] or other standards that might dictate plating thickness for this particular application. This page is provided for information only, it should not be considered advice and we cannot accept any responsibility or liability for your use of the information on this page. Threaded holes should be tapped oversize to allow for the coating buildup, or masked to prevent coating. new LazyLoad(); letter 2906 and The corrosion resistance of the zinc depends on two things: The protection from the zinc plating is proportional to the thickness of the zinc plating - so thicker zinc means more protection for the base metal. Alkaline zinc — This offers less plating efficiency than acid zinc and a slower electrodeposition rate, but it provides better thickness distribution and ductility Choosing the appropriate zinc plating procedure — After solution preparation, the parts are ready for plating. If the finish is at a minimum .0002" is there a binding risk because the plating doesn't specify a max tolerance? BZ Applicable Industry Spec: ASTM B633, SC1 (5µm), Type III, Blue, Classification Numbers (ECCN, CAGE, DUNS, NAICS), CAMDS (China Automotive Material Data System), DFARS (Defense Federal Acquisition Supplement), IMDS (International Material Data System), ITAR (International Traffic In Arms Regulations), ODS General Statement (Ozone Depleting Substances), UL (Underwriter Laboratories Safety and Certification Organization – PEM Product Certifications), 3D Models (download or direct insert free on website), Employee Spotlight – Larry Zhang, New Product Applications Manager, Kunshan, China, DesignFax October 2019 – Trends in Fastening Technology: Smaller, Lighter, Easier to Install. All rights reserved. Is my math correct or can I get by with Fe/Zn 8ANS per F1941? I have several concerns with doing this: the cost of new pre-plate gaging, the effect of .0005" plating thickness on the 60 deg. Metal Finishings Ltd is registered in England and Wales with company number 03185638. link to spec at Techstreet] The normal zinc-plated coating is dull gray in color with a matte finish. SIR, MY QUESTION IS WHAT IS THE THICKNESS OF ZINC ALKALINE ON THREAD BOLT? Zinc coating is usually thin, ranging up to 1 mil (25 µm). The information on this page is used and relied on at your own risk and you bear the sole responsibility for any outcomes.

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