ASTM B(). Standard Specification for Electrodeposited Coatings of Cadmium. standard by ASTM International, 03/01/ View all product details. 2. Discontinued; see Annual Book of ASTM Standards, Vol Replaced by Specification B 3. Annual Book of ASTM Standards, Vol 4. Abstract. This specification covers the requirements for electrodeposited cadmium coatings on products of iron, steel, and other metals. Cadmium coatings are.
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Corrosion products formed on cadmium are tightly adherent. Electrodeposited cadmium coatings shall be classified on the basis n766 thickness as Class 25, 12, 8, and 5. Unlike zinc, cadmium does not build up voluminous corrosion products on the surface.
Cadmium is deposited as a coating principally on iron and steel products. The coating shall be essentially pure cadmium produced by electrodeposition usually from an alkaline cyanide solution. Our finish choices include:.
Cadmium-coated steel parts have a lower electrical contact resistance than zinc-coated steel. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The lubricity of cadmium plating is used on springs for doors and latches aatm for weaving machinery operating in high humidity.
It can also be electrodeposited on aluminum, brass, beryllium copper, copper, nickel, and powder metallurgy parts. This specification covers the requirements for electrodeposited cadmium coatings on products of iron, steel, and other metals.
The lubricity of cadmium plating is used on springs for doors and latches and for weaving machinery operating in high humidity.
ASTM B Cadmium Plating | Keystone Finishing
It can also be electrodeposited on aluminum, brass, beryllium copper, copper, nickel, and powder metallurgy parts. Print 1 2 3 4 5 page sstarting from page current page.
The cadmium coating shall be sufficiently adherent to the basis metal to pass the tests. ASTM B Cadmium Plating Cadmium plating is applied in the automotive, aerospace, and military fields, beneficial for its reliability, consistent coverage, and cost efficiency.
The as deposited coating Type I is useful for the lowest cost protection in a mild or noncorrosive environment where early formation xstm white corrosion products is not detrimental or harmful to the function of a component.
The prime purpose of the supplementary chromate finishes Types II and III on the electroplated cadmium is to increase corrosion resistance. Nails, Spikes, and Staples. Today, some 12, ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. Corrosion products formed on cadmium are tightly adherent.
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ASTM B766 – 86(2015)
ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. This abstract is a brief summary of the referenced standard. Undercutting of threads on b7766 parts is not necessary as the cadmium coating has a low coefficient of friction that reduces the tightening torque required and allows repetitive dismantling.
The thickness of the coating everywhere on the significant surface shall conform to the requirements of the specified class. The plating shall be applied after all basis metal heat treatments and mechanical operations.
The basis metal shall be subjected to such cleaning procedures as necessary to ensure a surface satisfactory for subsequent electroplating. FORMAT Single User Subscription Site License Subscription BOOKS All Books PACKAGES All Packages EDITION to PUBLISHER.
Click here to download full list of books. No items in cart. This abstract is a brief summary of the referenced standard. Nonmagnetic Coatings on Magnetic Basis Metals. Cadmium shall be b7666 directly on the basis metal part without an undercoat of another metal except when the part is either stainless steel or aluminum and its alloys. SinceKeystone has been a leader in the metal finishing industry.
Cadmium coatings are used for corrosion resistance and for corrosion prevention of the basis metal part. There were no books found for the applied search filters. Link to Active This link will always route to the current Active version of the standard. Chromating will retard or prevent the formation of white corrosion products on surfaces exposed to various environmental conditions as well as delay the appearance of corrosion from the basis metal.
The as-deposited coating Type I is useful for the lowest cost protection in a mild or noncorrosive environment where early formation of white corrosion ast, is not detrimental or harmful to the function of a component. The supplementary Type II chromate film shall be adherent, nonpowdery, and abrasion resistant. This allows for proper functioning during corrosive exposure of moving parts, threaded assemblies, valves, and delicate mechanisms without jamming with debris.