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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The coating is examined for blistering or other evidence of poor adhesion at 43 magni? Deposit properties of Electroless Nickel far exceed those of electro-plated bright nickel. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
NOTE 4—The purchaser should furnish separate test specimens or coupons of the basis metal for test purposes to be plated concurrently with the articles to be plated see 8.
These coatings are used in applications requiring abrasion and wear resistance. The inspection lot is then classi? You may delete a document from your Asgm Profile at any time. Then remove the part, air dry, and examine for rust spots, which indicate pores. Rough, non uniform surfaces require thicker coatings than smooth surfaces to achieve maximum corrosion resistance and minimum porosity. These coatings are used in electronic applications providing solderability, bondability, increased electrical conductivity, and resistance to strong alkali solutions.
After rinsing and air drying, examine the part for asrm spots, which form at pore sites. NOTE 17—Appropriate test specimens are strips approximately 25 to 50 mm wide, to mm long and 3 to 6 b733-4 thick. Electroless nickel, as opposed to other electrolytic coatings, does not require current or anodes. A number in parentheses indicates the year zstm last reapproval.
Articles to be stripped should be clean and free of oils and surface debris that may interfere with the stripping process. Proceed to Checkout Continue Shopping. Typical environments would include acid solutions, elevated temperature and pressure, hydrogen sul? NOTE 18—On thick 75?
Nonmagnetic Coatings on Magnetic Basis Metals. The coating shall meet a maximum wear rate which is speci?
Electroless Nickel Coating
To reface the b73-04 use CS discs from Taber. The following analysis wavelength lines have been used with minimum interference to determine the alloy. These coatings are used in electronic applications providing solderability, bondability, increased electrical conductivity, and asm to strong alkali solutions.
Coatings with phosphorus contents greater than The last must yield a numerical value and certain statistical requirements must be met. The instrument shall be calibrated with deposits plated in the same solution under the same conditions on magnetic steel.
ASTM B Specification | Electroless Nickel – Phosphorous Coatings | General Metal Finishing
This standard does not purport v733-04 address all of the safety concerns, b73-04 any, associated with its use. Further, hydrogen embrittlement relief baking for at least 3 hours is required after plating on steels that have been heat-treated to a hardness above Rockwell C Applications include requirements for diffusion barrier, undercoat, electrical conductivity and wear and corrosion protection in specialized environments.
Careful attention to the selection of TYPE will insure optimum performance of the deposit in the intended application. The conversion of Vickers to Knoop using Tables E is not recommended. These coatings are used in applications requiring abrasion and wear resistance.
Electroless Nickel Plating
We can also help with your design to ensure RoHS compliance. The phosphorus content of the coating must be known to calculate the thickness of the deposit. Report the mean and standard deviation for the coating. The test is performed by rotating a plated panel under rotating rubber wheels and weighing the panel after each cycles for weight loss. Test specimens are available from Taber.
The tensile strength of the material shall be supplied by the purchaser. This is because there is some substrate removal each time the article is stripped. Typical environments include light-load lubricated wear, indoor corrosion protection to prevent rusting, and for soldering and mild abrasive wear.
This standard does not purport to address all axtm the safety concerns, if any, associated with its use. Your Alert Profile lists the documents that will be monitored.
If they do not, Test Method B identi? Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. In the case of dissatisfaction occurs with the results of a test, the producer may make a claim for a hearing. Test Method B contains several plans and aetm gives instructions for calculating plans to meet special needs.