Copper & Alloys

By Wikipedia definition, there are as many as 400 different copper and copper-alloy compositions loosely grouped into the categories: copper, high copper alloy, brasses, bronzes, copper nickels, copper–nickel–zinc (nickel silver), leaded copper, and special alloys. Different, and sometime contradictory behavior of the alloys’ components in process of electropolishing, multiplied by endless variation of requirements and applications, make the task of Copper Alloys Electropolishing a challenge.
Finish Line is commercially experienced in supplying of Electro-polishing service for 260 Brass (70% Cu, 30% Zn) items, at capacity of thousand units per day. Subject to appropriate feasibility tests, any copper alloy may be mass-electropolished at the same line, after proper electrolyte correction and process parameters adjusting.
Special tasks were successfully tried as well, like Copper-Tellurium Alloy electropolishing, complicated by the danger of foul-smelling discharge gases, when electropolished in regularly used acid oxidizing electrolytes.

Anode Treatment

Anode treatment beneficiates metal surface through metal dissolving and oxidation. In case no coating is allowed, Anode Treatment is a way to enhance your parts’ surface qualities. more >>


Passivation is a classic anode treatment to improve corrosion resistance of metals, comparing to not treated parts, through completing natural formation of metal oxides surface layer. more >>

Bright Passivation

Bright Passivation improves corrosion resistance of metals, comparing to not treated parts, removes spots from previous processing and provides the parts with brighter appearance. more >>


Etching is an old craft which technically comprises a vigorous anode treatment process, widely exploited in industry. Etching metal surface as a whole makes it uniformly rough and porous more >>

Color Anodizing

Color Anodizing is a unique Titanium only applied process granting to metal surface a wide spectrum of controllable vivid interference colors, which are stable, uniform and repeatable more >>

Surface preparation

Surface preparation ensures the after Anode Treatment surface features as aimed. It includes both quality improving (like de-burring) and surface beneficiation (like surface roughening) more >>

Surface cleaning

Surface Cleaning is an essential completing operation after any Anode Treatment intended washing the surface from leftovers of previous treatment, using purified water at the end step more >>

Clean Room Packing

Packing in Clean Room class 1000 with laminar cameras class 100 allows us to implement packaging procedure for customers’ products having the highest cleanness requirements more >>