Find the most up-to-date version of SAE AMS-C at Engineering MIL-CC. 3 MY les5. MILITARY SPECIFICATION. This specification ie approved for we by all. Departfmnta and Agencie8 of the Oapartmmt of. Defense. 1. SAE AMS-C Electroless Nickel Coatings. SAE AMS-C Revision D, June Complete Document. Electroless Nickel Coatings. Includes all.
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When the coated parts are of such form as to be not readily adaptable to a test specified herein, or at the discretion of the inspector for destructive tests for the sampling of small lot sizes, the test may be made by the use of separate specimens coated concurrently 2074 the parts represented.
The basis material shall be free from defects that will be detrimental to the utility, appearance, or serviceability of the finished product or part and coating.
Stress relief heat treatment: A lot shall consist of coated parts of the same type and class, same basis material, and of approximately the same size and shape, coated under the same conditions and by means of the same coating process, and submitted for ans at one time.
All details of workmanship shall conform to ajs best practices for high quality coating. Nickel Electroless autocatalytic chemical reduction 6. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not xms submission of known defective material, either indicated or actual, nor does it commit the government to accept defective material.
Class 2 coatings on steel parts that have a hardness of Rockwell C40 or above are required to be tested in accordance with 4. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.
With aluminum electronic devices, not only is product contamination prevented, but the coated parts facilitate soldering when used in conjunction with a mildly activated RMA or activated RA rosin flux. Periodic microscopic destructive thickness and adhesion tests shall be performed as a referee method to verify comparable nondestructive tests for the purpose of process control assurance.
Unfortunately, the MIL-C was not cancelled at that point in time. Our drawing states to process parts to MIL-C Unless otherwise specified, all inspections shall be performed in accordance with the methods of inspection amd in 4. AMS-CB is therefore reinstated and is designated as a noncurrent document.
Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements examinations and tests as specified herein. Unless otherwise specified, the coating shall be applied after all basis metal heat treatments and mechanical operations such as machining, brazing, welding, forming, and perforating of the part have been completed. At least once per calendar quarter, a coated part, or a separately coated specimen prepared in accordance with 4.
The articles, parts or test specimens shall be held under load for at least hours and then examined for fracture. Failure of one or more of the test specimens shall constitute failure of the lot. Still SAE felt that the specification duplicated pre-existing standards and wanted to withdraw the document amms favor of those older and well-used documents.
Manufacturers are given latitude in the selection of specific plating bath formulations used for the chemical deposition of an amorphous nickel-phosphorous metallic compound provided the coating obtained meets the requirements of this specification. This is a stabilized document. Aluminum alloys, heat-treatable, processed to improve adhesion of the nickel deposit. Coated parts–that is, those parts used in air compressors, missile-fuel injector plates, pumps, reciprocating surfaces, and so forth are amd from oxidation, corrosion and wear.
The part shall be considered nonconforming if one or more measurements fail to meet the specified minimum thickness. Class and grade of coating.
MIL-C D COATINGS ELECTROLESS NICKEL REQUIREMENTS
The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of the specification to the extent specified herein.
It is recommended, therefore, that this specifications not be specified for new designs. Number of this specification. So in Octoberthe document was reinstated in the current Inactive Revision B and thus it remains to this day. Your email address will not be published. Formation of cracks that do not result in loss of plating adhesion is acceptable.
The Government reserves the right to perform any of the inspections set forth in ama specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements.
Each part, or specimen shall be tested as specified in 4. Unless otherwise specified, the shot peening shall be accomplished on all surfaces for which the coating is required and all immediately adjacent surfaces when they contain notches, fillets or other abrupt changes of section size where stresses will be concentrated.
Coated-test specimens shall be exposed to a neutral salt-spray test in accordance with ASTM B for hours. It also shall be impossible to detach any area of the coating with a sharp amss on the outside radius of the bent-test specimen.
A random sample of 4 parts shall be selected from each inspection lot which has more than 15 parts see 4. Grade A coatings on aluminum alloys and grade C coatings on iron alloys after plating and all required thermal treatments shall show no visual evidence of corrosion of the basis metal when tested 2607 accordance with 4.
AMS-C-26074 and MIL-C-26074 – An explanation of the revision path
Coated parts of stainless steel similarly facilitate brazing. Class 1 Class 2 Class 3 Class 4 1. Leave a Reply Cancel reply Your email address will not be published.
Required hardness can be achieved by heating using the following schedule: The separate specimens shall be of a basis material equivalent see 6. Sampling plan C – Sampling procedure for adhesion tests: Excellent uniform deposits are produced on wms parts.
Sampling plan B – Sampling procedures for evaluating hydrogen embrittlement amd destructive test – Class 1 and 2: Should you need copies of any of the standards mentioned, or have any further questions, please get in touch.