e supply a wide variety of both engineering and decorative coatings plated on to a diverse list of substrate materials and part configurations. One of the specialties of Hill Cross Company is the deposition of gold directly on to various stainless steel alloys with no undercoat required. Building on this technology, we presently deposit other metals directly on difficult substrates using either electrolytic or electroless processes. The tables below summarize our present production capabilities for coatings, substrates, and specifications.



COATINGS PLATED TO SPECIFICATION

Cyanide based electrolytic copper High Purity Soft Gold
Bright Acid Electrolytic Copper Bright, Hard, Acid Gold
High Purity Sulfamate Nickel Pure Electrolytic Silver (Matte or Bright)
Phosphorous Electroless Nickel Pure Palladium (Engineering or Decorative)
Boron Electroless Nickel Pure Tin Electroplate (Matte or Fully Bright)


SUBSTRATES TYPICALLY PROCESSED

Plain Steel 300 Series Stainless Steel Brass
Leaded Steel 400 Series Stainless Steel Pure Molybdenum
Kovar (Ni/Fe) OFHC Copper Pure Tungsten
42 Alloy (Ni/Fe) Phosphor Bronze Copper/Tungsten Alloys
52 Alloy (Ni/Fe) Beryllium Copper Metallized Ceramics


MILITARY SPECIFICATIONS TYPICALLY CERTIFIED TO

Copper: MIL-C-14550
Nickel: QQ-N-290 Pure Silver: QQ-S-365
Electroless Nickel: MIL-C-26074 Gold: MIL-G-45204
Pure Tin: MIL-T-10727 Engineering Palladium: MIL-P-45204


We are always open to discussing new coating requirements or developing technologies for processing new substrates in any reasonable configuration. Additionally, we presently meet many other customer supplied specifications and will attempt to meet any reasonable specification you supply.