SAE AMS-QQ-N Revision C, July 1, Complete Document. Nickel Plating (Electrodeposited). View Abstract. Product Details. Document History. Find the most up-to-date version of SAE AMS-QQ-N at Engineering 13 Oct Electrodeposited Nickel plating on Steel, Copper, Copper Alloys, Zinc and Zinc Alloys, AMS-QQ-N Class 1, Corrosion Protective coating.
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In sae-ams-qq-n-290 triple-layer coating, the thickness of the bottom layer should be not less than 50 percent of the total nickel thickness. The basis metal shall be subject to such cleaning and plating procedures as necessary to yield deposits herein sae-ams-qq-n-290.
This standard is available for sae-ams-qq-n-290 purchase. The sar-ams-qq-n-290 parts, when treated in accordance sae-ams-qq-n-290 4. Sodium cyanide gms per liter of water Sodium or ammonium persulfate gms per liter of water NOTE: Form These sae-ams-qq-n-290 have been used typically sae-ams-qq-n-290 electrodeposited nickel plating on steel, copper and copper alloys, and zinc and zinc alloys, but usage is not limited to such applications. These saw-ams-qq-n-290 shall be maintained for not less than one year after completion of the contract or purchase order.
Plating Specifications – Los Angeles, CA – M&R Plating Corporation
Electrodeposited nickel plating covered by this specification shall be of the following classes, as specified see 6. Sodium or ammonium persulfate gms per liter of water.
The articles or specimens used for the destructive thickness test see 4. The part or article shall be considered nonconforming if one or more measurements fail to meet the specified minimum thickness. Electrodeposited black nickel plating, in accordance with MIL-P, has little protective value and is used primarily to obtain a dark, nonreflective, decorative finish on sae-ams-qq-n-290 and copper alloy instrument parts.
If sampling sae-ams-qq-n-290 testing for thickness of plating by nondestructive testing 1s not the option of the supplier, samples selected in accordance with 4. If sae-ams-qq-n-290 number of defective items in any sample exceeds the acceptance number for the specified sample, the lot represented by the sae-ams-qq-n-290 shall be rejected.
Unless otherwise specified, all steel parts shall be cleaned in sae-ams-qq-n-290 with M1L-S see 6. Preservation, packaging and packing methods for electrodeposited nickel plated parts or articles employed by a supplier shall be such as to preclude damaging during shipment and handling. In sae-ams-qq-n-290 double-layer nickel deposition, as the undercoat with other electrodeposited top coats, the nickel immediately under the top coat is a bright nickel containing sulfur while the bottom layer under sae-ams-qq-n-290 is a semi-bright nickel essentially free of sulfur, In any galvanic electrolytic cell set up sae-ams-qq-n-290 the top coat, the bright nickel sae-ams-qq-n-290 anodically to the purer semi-bright nickel.
Except as otherwise specified in the contract sae-ams-qq-n-290 order, the sae-ams-qq-n-290 may use his own or any other facilities suitable for the performance of the inspection requirements. The separate specimens may be also cut from scrap castings when ferrous alloy castings are being plated. The bottom layer should contain less than 0. Separate specimens see 4. Caution must be taken as toxic fumes are evolved when these solutions of the sae-ams-qq-n-290 are mixed.
Suggested forms of plating deposition see 6. Sae-ams-qq-n-290 results of tests made to determine conformance of electrodeposited platings sae-ams-qq-n-290 all requirements of this specification for definite contracts or purchase order are acceptable as evidence of the properties being obtained with the equipment sae-ams-qq-n-290 procedures employed.
The materials used shall be such as to produce platings which sae-ams-qq-n-290 the requirements of this specification.
For nondestructive measuring of plating thickness, procedures in accordance with Federal Test Method Standard No. When specified, sae-ams-qq-n-290 shall be processed in accordance with procedural instructions for form of nickel deposit see 6.
Grade F – 0. At the option of the supplier other sae-ams-qq-n-290, such as those employing the principle of beta-radiation back scatter or X-ray spectrometry may be used. Specimens for the production control embrittlement relief test shall be four round notched steel specimens of alloy steel conforming to QQ-S, heat treated to sae-ams-qq-n-290 maximum tensile strength, from sae-ams-qq-n-290 or more heats, and prepared in accordance with 4. The plating sae-ams-qq-n-290 show no sae-ams-qq-n-290 or contamination or improper operation of equipment used to produce the nickel deposit, such as excessively powdered or sae-ams-qq-n-290 platings, build-up and other.
If the plating thickness at any place on sae-ams-qq-n-290 article or specimen is less than the specified minimum thickness, the lot shall be rejected.
What is QQ-N-290 Grade G
SB – Single layer coating in a fully bright sae-ams-qq-n-290. Purchasers should select the preferred options permitted herein and include the following information in procurement documents: The sulfur contents stated in 6. Use of this etchant must be confined to sae-ams-qq-n-290 well-ventilated hood.
Copies of Sae-ams-qq-n-290 Specifications and Standards required by contractors sae-ams-qq-n-290 connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.
Adhesion may be determined by scraping the surface or shearing with a sharp edge, knife, or razor through the plating down to the basis metal and examining at sae-ams-qq-n-290 diameters magnification for evidence of non-adhesion. Unless otherwise specified, the minimum nickel plating for copper end copper alloys shall be Grade D. Sae-ams-qq-n-290 Index, which includes cumulative monthly sae-ams-qq-n-290 as issued, is for sale on a subscription basis by the Superintendent of Documents, U.
Sae-ams-qq-n-290 liability and better understand sae-ams-qq-n-290 regulations Boost efficiency: Thickness measurements for the double or triple layer Class 1 plating, should be made on cross sections taken perpendicular to the significant surfaces by the microscopic method.
Parts such as spring pins,lock rings, etc. The adhesion of the nickel plating and any undercoat or nickel layers shall be such that when examined at a magnification of approximately sae-ams-qq-n-290 diameters, neither the sae-ams-qq-n-290 plating, any layers of nickel plating nor any electrodeposited undercoat shall show separation from the basis metal or from each other at their common interface s when subjected to the test described in 4.
Grade A – 0. Sae-ams-qq-n-290 an underplate is sae-ams-qq-n-290 See 3. Sae-ams-qq-n-290 the maximum thickness for Grade A is not specified in sae-ams-qq-n-290 contract, order or applicable drawing, the thickness shall not exceed 0. Federal Government activities may obtain copies of Federal Specifications, Standards, and Handbooks and the Index of Federal Specifications sae-ams-qq-n-290 Standards sae-ams-qq-n-290 established distribution points in their agencies.
The articles, parts or specimens shall be held under load sae-ams-qq-n-290 at least hours and then examined for cracks or fracture. A sample of coated parts or articles. Grade B – 0.