Acid Copper

Copper is used as a rapid filler, Copper has a similar compressive strength as mild steel, and as the copper is “cupped” in the damage, it is further supported by surrounding areas, it has a compressive strength of approx 67,000 PSI, which basically means that as hydraulics rarely exceed 2500 psi at lip seal pressure it will not extrude or shift under load. It can be plated to literally any thickness in steps as required. It has a hardness value of 141 Vickers, and can be plated to 375 microns (0.015”) per layer

Nickel

Nickel is used as a pre plate and a capping layer depending on situation, it has a hardness value of 36Rc to 46 Rc, and it can be plated to 125 microns per layer (0.005”)

Cobalt

Cobalt is a deposit that has similar characteristics of chromium; it has a surface hardness of approx 50Rc and is resistant to corrosion or rusting. It can be plated to 250 microns (0.010”)

Note

Cobalt or Nickel is used to repair surfaces, of particular interest is the fact that the typical Speedi-sleeve has a surface hardness quoted at 80Rb, which when converted to Rockwell C is the equivalent of 17Rc.

Other Metals

Other metals are available on request, Silver, Gold, Palladium, Rhodium, if you have a use for these metals, then please contact us to discuss your requirements.

Adhesion tests

This shows the adhesion of the plating by bending and chisel tests.