MIL-STD-868 Nickel Plating, Low Embrittlement, Electro-DepositionThis standard covers the process and materials required for the electro-deposition of nickel on high strength steel substrates. Electro-deposited nickel is used for wear resistance, heat resistance, and as an undercoat for precious metals. Subsequent heat treating techniques needed to insure low hydrogen embrittlement of steel are also described. This standard meets the performance requirements of SAE-AMS- QQ-N-290 and may be used when SAE-AMS-QQ-N-290 is specified provided any unique requirements of SAE-AMS-QQ-N-290 are complied with.

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MIL-STD-868B CHANGE 2

MIL-STD-1504                        Abrasive Blast of Aircraft Components

(Inactive)

(Copies of these documents are available online at https://assist.daps.dla.mil

or from Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)

2.3   Non-Government standards and specifications.   The following documents form a part of this document to the extent specified herein.  Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

SOCIETY OF AUTOMOTIVE ENGINEERS INTERNATIONAL (SAE) SAE-AMS-2430                      Shot Peening

SAE-AMS-QQ-N-290             Nickel, Plating (Electrodeposited)

(Copies of these documents are available online at www.sae.org or from the Society of

Automotive Engineers International, 400 Commonwealth Drive, Warrendale, PA 15096-

1001.)

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

ASTM Standard F519            Mechanical Hydrogen Embrittlement Evaluation of Plating/Coating Processes And Service Environments

(Copies of these documents are available at www.astm.org or ASTM International, 100

Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA  19428-2959.)

2.4   Order of precedence.  In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3.   DEFINITIONS

3.1   High strength steel.  For the purpose of this standard, high strength steel is defined as steel heat treated to 1.24 X 109 Pa (180,000 psi and above).

3.2   Material batch.  All items processed at one time through the plating bath.

4.   GENERAL REQUIREMENTS

4.1   Materials and equipment.   Materials and equipment used in nickel plating are as follows.

4.1.1   Materials.

a.   Boric acid

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