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.
|Published (Last):||16 August 2016|
|PDF File Size:||18.66 Mb|
|ePub File Size:||4.55 Mb|
|Price:||Free* [*Free Regsitration Required]|
Subscription pricing is determined by: Conversions of Vickers or Knoop hardness number b33-04 Rockwell C is not recommended. Link to Active This link will always route to the current Active version of the standard.
This is always a good practice when dealing with high value copper alloy articles. Electroless Nickel Please note that price shown is for minimum thickness. We have no amendments or corrections for this standard. As the deposit nears complete removal, it is common for a slight etch of the substrate to occur.
The coating is examined for blistering or other evidence g733-04 poor adhesion at 43 magni? An example is leaded steel which may exhibit liquid or solid embrittlement after heat treatment.
Electroless Nickel Plating
The program involved plating Your Alert Profile lists the documents that will be monitored. These coatings are used b733-40 electronic applications providing solderability, bondability, increased electrical conductivity, and resistance to strong alkali solutions.
Test Method B contains four sampling plans, three for use with tests that are nondestructive and one for use with tests that are destructive. These coatings are used in applications requiring abrasion and wear resistance. Deposits higher than 7.
Already Subscribed to this document.
Improvements in wear resistance, corrosion resistance and hardness are achieved. A number in parentheses indicates the year of last reapproval. Avoid rapid heating and cooling of plated parts. Careful attention to the selection of TYPE will insure optimum performance of the deposit in the intended application.
Any red spots remaining indicate pores. Insertion of a sharp probe at the interface of the coating and basis metal to determine the adhesion is suggested. Proceed to Checkout Continue Shopping. The chemical and physical properties of the deposit vary primarily with its phosphorus content and subsequent heat treatment.
For example, coating with a test result for phosphorus of 9. For Class 2 coatings, the microhardness shall equal or exceed a minimum of HK or equivalent Vickers see 4. The chemical and physical properties of the deposit vary primarily with its phosphorus content and subsequent heat treatment. These coatings are used in applications requiring abrasion and wear resistance.
In the case of dissatisfaction occurs with the results of a test, the producer may make a claim for a hearing. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
The coating is carried out in a watery solution, containing metallic ions, complexes and stabilizers. After coating and if speci?
We will be happy to research it to see xstm our process meets your spec too! 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.
The tensile strength shall be supplied by the purchaser.
ASTM B Specification | Electroless Nickel – Phosphorous Coatings | General Metal Finishing
Coatings that show imperfections may be rejected. Consideration of the risk of stripping the deposit should always be considered when selecting this coating. Please note that price shown is for minimum thickness. After 3 min, apply a ast, of potassium ferrocyanide prepared by dissolving 1 g of potassium ferrocyanide and 1. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
The last must yield a numerical value and certain statistical requirements must be met. The precipitation of these high phosphorus deposits may be delayed for several minutes in the mid-range temperatures. Use the test methods described in 9. Care should awtm taken to control the humidity between tests.
The heat treatment temperature was considerably higher than typical asrm and was chosen to evaluate the formation of diffusion products of iron, nickel and phosphorus. Articles to be stripped should be clean and free of oils and surface debris that may interfere with the stripping process.
The results should be averaged without the?
Undercoats may be required to facilitate rework. These coatings are used in applications requiring abrasion and wear resistance. Add to Alert PDF. The use of a statistical regimen to establish the control limits and frequency of analysis may be employed to ensure quality deposits are produced. It is characterized by industrial atmosphere exposure on steel substrates in dry or oiled environments.
Any such defects on signi?