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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These coatings are used in applications requiring abrasion and wear resistance. We can also help with your design to ensure RoHS compliance. The test is performed by rotating a plated panel under rotating rubber wheels and weighing the panel after each cycles for weight loss. Electroless Nickel is deposited by a chemical reduction process that reduces the nickel ions.
The chemical makeup of the plating solution and the use of the solution can affect the porosity and corrosion resistance of the deposit.
ASTM B Specification | Electroless Nickel – Phosphorous Coatings | General Metal Finishing
Go to main content. For coatings requiring alloy analysis and corrosion testing weekly sampling should be considered as an option. If an alternate test is speci?
Additional requirements for internal stress, purity, and elongation may be necessary for some applications. NOTE 19—Aerated water is prepared by bubbling clean compressed air through distilled water by means of a glass diffusion disk at room temperature for 12 h.
Electroless Nickel on aluminum Please note that price shown is for minimum thickness. Applications include requirements for diffusion barrier, undercoat, electrical conductivity and wear and corrosion protection in specialized environments. The size of the sample and the criteria of compliance are determined by the application of statistics.
Test Method B contains several plans and also gives instructions for calculating plans to meet special needs. The corrosion resistance of the coating to a speci?
NOTE 17—Appropriate test specimens are strips approximately 25 to 50 mm wide, to mm long and 3 to bb733-04 mm thick. The hardness of CS wheels can change with time and can effect the reproducibility of results see Test Method D Also, discoloration due to b733-40 treatment shall not be cause for rejection unless special heat treatment atmosphere is speci? The article is placed in a chamber and blasted with a heavy grit until all the deposit is removed.
Deposit properties of Electroless Nickel far exceed those of electro-plated bright nickel. The electroless nickel coating is not poisonous and authorized by the American Health Organization as the best coating for cutlery. Report the mean and standard deviation for the coating. The precision and bias requirements will vary for each type of test.
Electroless Nickel Coating
This standard does not purport to address all of axtm safety concerns, if any, associated with its use. Then remove the part, air dry, and examine for rust spots, which indicate pores.
The use of a statistical regimen to establish the control limits and frequency of analysis may be employed to ensure quality deposits are produced.
We will check for issues with solution entrapment and other design concerns. For maximum accuracy, a minimum coating thickness of 75? Our process uses the most recent technology which meets the automotive end of life vehicle ELV initiatives and specifications.
They are used on beryllium and titanium parts for low stress properties. The b7330-4 is examined for blistering or other evidence of poor adhesion at 43 magni? Proceed to Checkout Continue Shopping. Thermal treatment for hardness enlargement.
The location of rack or wire marks in the coating shall be agreed upon between the producer and purchaser.
Electroless Nickel Plating
This standard does not purport to address all of the safety concerns, if any, associated with its use. The tests for these quali? Improvements in wear resistance, corrosion resistance and hardness are achieved. Coatings with phosphorus contents greater than Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may xstm.
An inspection lot shall be de?
Its main use is in engineering applications. The wear rate shall be speci? They are also used for the salvage of worn or mismachined parts.
Rounding of the test results due to the precision of the limits provides for an effective limit of 4.
B — 04 Standard Speci? Need more than one copy? These coatings are used in electronic applications providing solderability, bondability, increased electrical conductivity, and resistance to strong alkali solutions. In all cases, the duration of the heat treatment shall commence from the time at which the whole of each part attains the speci?
Created with Webvanta CMS. The chemical and physical properties of the deposit vary primarily with its phosphorus content and subsequent heat treatment. This standard is also available to be included in Standards Subscriptions.