Technical Specifications

Coating / Plating for electric connection

Metal coating (plating) are often applied to the surface of electrical conductor, connecting parts and bus connection joints to improve solderability, reduce oxidation (corrosion) and improve electrical properties (conductivity, hardness, emissivity, skin effect, etc.). The most common coating (plating) materials used with copper conductors are Tin and Silver. Copper and Nickel coating are often used as under layer. Tin is the most common coating material used with copper conductor at the service temperature up to 150°C. At higher temperatures, Silver and Nickel coating are often used to minimize oxidation.

Corrosion resistance of plating metals on material base copper for electrical used:

Hydro Sulfide (H2S) – Founded source: natural environment as hydro sulfuric acid, sewer gas, industries of petroleum, pulp and paper. The largest industrial cause of H2S is through petroleum refineries as the hydrodesulfurization process liberates Sulfur from petroleum

Sulfur dioxide (SO2) – Emission source: Burning of fossil coal, oil and gas from motor vehicle exhaust, petrol and metal refining, electricity power generation and food processing.

Chlorine (CL2) – Often used in the manufacture of chlorinated organic chemicals, plastics, and chlorinated lime, pulp and paper manufacturing. Other uses are water purification and treatment, swimming pool, sewage systems. It is a powerful oxidizing agent, strongly electronegative, very reactive.

Nitrogen Dioxide (NO2) – Emission source: Burning of fossil coal, oil and gas from motor vehicle exhaust, petrol and metal refining, electricity power generation from and food processing.

Ammonia (NH3) – Founded source: Agriculture, animal, based fertilizer, vehicular emissions and volatilization from soils and oceans.

(1) = high; (2) = Fair; (3) = poor

Standard specification

Standard specification