Materials features

PROMET-alloys nominal composition %

PROMET-alloys physical properties

Corrosioin resistance

Correspondance of standards

Information about corrosion resistance of copper alloys

Copper and all its alloys are very resistant to the following substances.

-all dry gases, with the exception of acetylene, which only brass can resist
-organic solvents, with the exception of chlorinated hydrocarbon, which brass resists poorly, but others quite well
-oils and liquid fuels and industrial products like, alcohols, asphalt, lacquers, linseed oil, plastics, etc.

Copper and its alloys, brass excluded, are extremely resistant to solutions and liquids of the following substances:

-alum, boric acid, formaline, sea air, creosote, milk, formic acid, sodium phosphate, washing soda, sodium sulphate, liquid glass, beer, tannic acid, soap solution, drinking water, condensation water, sea water, sewage water.

Copper and its alloys, brass excluded, are well resistant to solutions and liquids of the following substances:

-conditions in sulphite cellulose mills and paper mills, like climate, cooking acid, waste acid, washing fluids, damp sulphur dioxide, sulphurous acid, calcium bisulphite, acetic acid, ferro salines, phosphoric acid, fruit juices, carbon acid, damp carbon tetrachloride, damp tricolor ethylene, chlorinated lime, copper sulphate, magnesium chloride, milk acid, sodium carbonate, oxalic acid, oleic acid, sulphur, zinc sulphate, etc.

Copper alloys, brass excluded, are satisfactorily resistant to the following substances:

-black lye of sulphate cooking, bleaching solutions like sodium hypochlorite, chlorine solution and sodium peroxide, ammonium sulphate, aniline and aniline dyes, hydrofluoric acid, copper nitrate, sodium sulphide, zinc chloride, hydrochloric acid.

Copper alloys are not resistant to following substances:

-mercury and its salines, chromic acid, picrin acid, hydrocyanic acid and salines, that is cyanides, ferric chloride and –sulphate, ammonium and its salines.