ASTM B733-04 PDF
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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NOTE 1—Due to the precision of some phosphorus analysis methods a deviation of 0.
ASTM B Specification | Electroless Nickel – Phosphorous Coatings | General Metal Finishing
The Electroless nickel processes in our plant are medium phosphorus electroless nickel and high phosphorus electroless nickel, where the main characters of this processes are: Thermal treatment for adhesion improvement on ferrous alloys containing carbon and hardened aluminum. Continue to boil the water for 30 min.
When required, one of the following tests can be used on the plated part or specimen. A g load is recommended. The instrument shall be calibrated with deposits plated in the same solution under the same conditions on magnetic steel.
Care should be taken to control the humidity between tests. They are used on beryllium and titanium parts for low stress properties. The following analysis wavelength lines have been used with minimum interference to determine the alloy.
Additional requirements for internal stress, purity, and elongation may be necessary for some applications. Atm 18—On thick 75?
This standard is also available to be included in Standards Subscriptions. This method is effective when parts are large and stripping solutions would be difficult to manage.
The hardness of CS wheels can change with time and can effect the reproducibility of results see Test Method D Created with Webvanta 7b33-04. A superscript epsilon e indicates an editorial change since the last revision or reapproval. If they do not, Test Method B identi? This bb733-04 does not purport to address all of the safety concerns, if any, associated with its use. Avoid rapid heating and cooling of plated parts.
The location of rack or wire marks in the coating shall be agreed upon between the producer and purchaser. Service Condition 0 0. Please keep in mind that the thicknesses called out in the various specifications represent “thickness per side. Typical environments include light-load lubricated wear, indoor corrosion protection to asm rusting, and for soldering and mild abrasive wear. The chemical makeup of the plating solution and the use of the solution can affect the porosity and corrosion resistance of the deposit.
You may delete a document from your Alert Profile at any time. The surface of the coating shall be cleaned prior to testing see Note Type I wstm IV deposits are subject to greater structural variation and their properties are less predictable. Fine cracks in the coating on the tension side of the bend are not an indication of poor adhesion.
The wear rate satm be speci? Matrix effect due to the distribution of phosphorus in layers of the coating also effect the measurement accuracy and require that calibration standards be made under the same conditions as the production process. Active view atsm version of standard.
Electroless Nickel Coating
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 precision and bias requirements will vary for each type of test.
Already Subscribed to this document. Table 3 describes the heat treatment for maximum hardness. Uniform thickness is achieved on all surfaces where solution makes continuous b733-04.
Electroless Nickel Plating
These coatings are used in electronic applications providing solderability, bondability, increased electrical conductivity, and resistance to strong alkali solutions. It will vary depending on loads, type of indenter, b373-04 operator. The rhombic Knoop indenter gives higher hardness readings than the square-base pyramidal Vickers diamond indenter for to g loads, see Ref 6.
If the document is revised or amended, you will be notified by email.
Electroless Nickel Coating
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
The use of a statistical regimen to establish the control limits and frequency of analysis may be employed to ensure quality deposits are produced. These differences also effect non-destructive thickness testing by X-Ray and magnetic means. To reface the wheels use CS discs from Taber.
Coatings with phosphorus contents greater than After 3 min, apply a solution of potassium ferrocyanide prepared by dissolving 1 g of potassium ferrocyanide and 1. Apply heat to the beaker at such a rate that the water begins to boil in not less than 15 min, nor more than 20 min after the initial application of heat.