ASTM B() Standard Specification for Autocatalytic (Electroless) Nickel-Phosphorus Coatings on Metal Scope This . This ASTM B standard specification covers the requirements for electroless nickel-phosphorous coatings on metal. For more details call us. The procedure in our factory is carried out according to: AMS-C, or ASTM B The thickness of the coating and the treatments is displayed in the tables.
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When this occurs, ast steel or copper plated article is removed, rinsed, electrocleaned, rinsed, and returned to the stripper. Electroless Nickel on aluminum Please note that price shown is for minimum thickness. Please keep in mind that the thicknesses called out in the various specifications represent “thickness per side.
NOTE 14—To protect the edges, electroplate the specimens with a minimum of 5? The tensile strength of the material shall be supplied by the purchaser. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. Our process uses the most recent technology which meets the automotive end of life vehicle ELV initiatives and specifications.
Go to main content. Sufficient satm must be allowed for large parts to reach oven temperature. The heat treatment temperature was considerably higher than typical processing and was chosen to evaluate the formation of diffusion products of iron, nickel and phosphorus.
Apply heat to the beaker at such a rate that the water begins to boil in not less than 15 min, nor more astn 20 min after the initial application of heat. The article is placed in a chamber and blasted with a heavy grit until all the deposit is removed.
For coatings requiring alloy analysis and corrosion testing weekly sampling should be considered as an option. When Guide B is ashm B — 04 Standard Speci? The producer shall not be responsible for coatings defects resulting from surface conditions of the metal, if these conditions have been brought to the attention of the purchaser.
The precision and bias requirements will vary for each type of test. 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. Typical environments would include acid solutions, elevated temperature and pressure, hydrogen sul?
Electroless Nickel is deposited by a chemical reduction process that reduces the nickel ions. NOTE 10—Usually, when a collection of coated parts the inspection lot 8.
Electroless nickel, as opposed to other electrolytic coatings, does not require current or anodes. Because the deposited nickel alloy is a catalyst for the reaction, the process is self-sustaining.
For Class 2 coatings, the microhardness shall equal or exceed a minimum of HK or equivalent Vickers see 4. Duration of the test is cycles ast it can be extended to 25 cycles for more complete results. 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. Undercoats may be required to facilitate rework.
NOTE 18—On thick 75?
Last previous edition approved in as B — Careful selection of the pre and post heat treatments are recommended. This is always a good practice when dealing with high value copper alloy articles.
This standard is not included in any packages. Typical environments include light-load lubricated wear, indoor corrosion protection to prevent rusting, and for wstm and mild abrasive wear. The thickness of the coating and the treatments is displayed in the tables below: We can also help with your design to ensure B733-044 compliance. The pH of the aerated water should be 6. Its main use is in engineering applications.