(R) Electroless Nickel-Boron Plating
|Publication Date:||1 December 2018|
This specification covers the engineering requirements for electroless deposition of nickel-boron on various materials and the properties of the deposit.
Primarily to provide mar-resistant and corrosion-resistant surfaces with good solderability using a mildly activated rosin flux. For other applications where solderability and low contact resistance are not required, AMS2404 should be considered.
Application of electroless nickel plating to steel parts having a hardness of 46 HRC [ultimate tensile strength of 220 ksi (1517 MPa)] or higher shall not be performed unless authorized by the design documentation or specific approval has been received from the cognizant engineering organization.
Plating covered by this specification is classified as follows:
Class 1: Except for hydrogen embrittlement relief, no post plating thermal treatment.
Class 2: Thermal treatment at 375 °F (191 °C) to improve adhesion for non-heat-treatable aluminum alloys and beryllium alloys.
Class 3: Thermal treatment at 250 °F (121 °C) to improve adhesion for heat-treatable aluminum alloys. Unless a specific class is specified, Class 1 shall be supplied.
Safety - Hazardous Materials
While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.