4 Sep ASTM B 标准 – Designation: B – 97 Standard Specication for Autocatalytic (Electroless) Nic. Designation: B – 04 Standard Speci?cation for Autocatalytic (Electroless) Nickel-Phosphorus Coatings on Metal 1 This standard is issued under the?xed. Advanced Plating Technologies, a Milwaukee, Wisconsin company, provides electroless nickel plating per MIL-C, ASTM B and AMS as well as.
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All information presented is for general reference and does not represent a professional opinion nor the policy of an author’s employer. Historical Version s – view previous versions of standard.
Let’s say that this plating has a Class 2 requirement Heat Treat for Hardnessand it also needs Hydrogen Embrittlement relief. These coatings are used in electronic applications providing solderability, bondability, increased electrical conductivity, and resistance to strong alkali solutions. Call now or email. It offers a good barrier coating corrosion resistance. Please fill out this brief form to access the free PDF download of U.
Electroless nickel is generally applied to a thickness range of 25 to microns 0. Electroless Nickel plating Adtmalso known as autocatalytic nickel, is a micro crystalline to amorphous, hardenable nickel-phosphorous alloy coating.
The chemical and physical properties of the deposit vary primarily with its phosphorus content and subsequent heat treatment.
ASTM B Class 3 post heat treatment vs. ASTM B embrittlement relief
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.
I figure that if I ask asttm plater to plate a part per a specification, the least I can do is read the specification and give them all of the ordering information they need to plate b373 parts per the specification. These coatings are used in electronic applications providing solderability, n733, increased electrical conductivity, and resistance to strong alkali solutions. This specification establishes the requirements for autocatalytic electroless nickel-phosphorus coatings applied from acidic aqueous solutions to metallic products for use in engineering functions operating at elevated temperatures.
Excellent corrosion resistance – dependent on phosphorous content hours per ASTM B are typical.
Active view current version of standard. Nonmagnetic Coatings on Magnetic Basis Metals. Coatings with phosphorus contents greater than Hi Richard, Bit of an odd ashm this.
ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
So, generally it is hydrogen embrittlement relief bake first and heat treatment second. What is the answer to the Heat Treatment vs.
Electroless Nickel Plating
The chemical makeup of the plating solution and the use of the solution can affect the porosity and corrosion resistance of the deposit. The coatings shall be sampled and tested accordingly b7333 evaluate both acceptance appearance, thickness, adhesion, and porosity and qualification requirements composition, microhardness, and hydrogen embrittlement. This standard does not purport to address all of the safety concerns, if any, associated with its use.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but wstm not provided as part of the standard.
ASTM B733 Class 3 post heat treatment vs. ASTM B850 embrittlement relief
They are also asmt for the salvage of worn or mismachined parts. And porosity shall be inspected either by ferroxyl test, boiling water test, aerated water test, or alizarin test.
They are used on beryllium and titanium parts for low stress properties. Visit our Resource Library for Design Recommendations. The chemical and b7333 properties of the deposit vary primarily with its phosphorus content and subsequent heat treatment.
Hi Richard, If the high temperature treatment cannot be done within a reasonable time at least within 4 hours of plating then the embrittlement relief bake needs to be done first.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. 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. Because the deposited nickel alloy is a catalyst for the reaction, the process is self-sustaining.
These coatings are used in applications requiring abrasion and wear resistance. The coatings covered here are alloys of nickel and phosphorus produced by self-sustaining autocatalytic chemical reduction with hypophosphite. Thickness shall be assessed either by microscopical method, a magnetic induction instrument, beta backscatter method, a micrometer, weigh-plate-weigh method, coulometric method, or X-ray spectrometry.
February 24, — apologies, finishing. Coatings with phosphorus contents greater than Because the deposited nickel alloy is a catalyst for the reaction, the process is self-sustaining. It’s not possible to diagnose a finishing problem or the hazards of an operation via these pages. This standard does not purport to address all of the safety concerns, if any, associated with its use.