Electroless Nickel Plating

Electroless Nickel is a hard, wear resistant and corrosion resistant coating used in applications where a uniform thickness is required.  It is useful in service where temperature may reach 1000F. Since the nickel is deposited without current, Electroless Nickel will coat uniformly on complex shapes with recessed surfaces.  Electroless Nickel may also be post-baked to increase hardness.

Precious Metals Plating - Electroless Nickel sample


Specifications:


MIL-C-26074, AMS-C-26074


  • Grade A - 0.001 inch thickness minimum
  • Grade B - 0.0005 inch thickness minimum
  • Grade C - 0.0015 inch thickness minimum
  • Class 1 - As deposited, no post bake
  • Class 2 - Post bake 500F for 4 hours minimum – Steel
  • Class 3 - Post bake 375F for 1 to 1.5 hours – aluminum
  • Class 4 - post bake 250F for 1 to 1.5 hours – aluminum






ASTM B733


  • Type IV - 5% to 9% Phosphorous
    Service Class:
  • SC0 - 4 micro inch minimum
  • SC1 - 0.0002 inch minimum
  • SC2 - 0.0005 inch minimum
  • SC3 - 0.0010 inch minimum
  • SC4 - 0.0030 inch minimum


AMS 2404


  • Class 1 - No Heat Treat
  • Class 2 - 450F Post-Bake for 4 Hours Minimum - Steel
  • Class 3 - 375F Post-Bake for 1 to 1.5 Hours - Aluminum
  • Class 4 - 250F Post-Bake for 1 to 1.5 Hours - Aluminum


Post Heat Treat:


  • Class 1 - As Deposited – No Heat Treat
  • Class 2 - 500F Heat Treat for 20 hours - Steel
  • Class 3 - 375F Heat Treat for 2 to 4 hours - Steel
  • Class 4 - 250F Heat Treat for 1 hour - Aluminum
  • Class 5 - 295F Heat Treat for 1 hour - Aluminum and Copper
  • Class 6 - 590F Heat Treat for 1 hour - Titaniun