Resource Library

Can copper alloys be used for architecture?

Yes, brass and bronze alloys are available.

Are 90-10 welding consumables available for welding 90-10 copper-nickel?

They are available but 70-30 copper-nickel consumables are preferred for welding both the 90-10 and 70-30 alloys due to superior deposition characteristics.

Can leaded solders be used on drinking water installations?

No.

Are copper-nickel alloys susceptible to the attachment of marine organisms in seawater?

Copper-nickel alloys can harbour slimes, but the attachment of macro-organisms—such as marine grasses and shellfish—is impaired. If these do become attached under quiet conditions, adherence is poor and they can be easily removed mechanically.

Can patination of the copper be prevented?

Applying a lacquer is not recommended, particularly when large areas are considered. Lacquers will require regular maintenance over the life of the roof.

Are lead-containing solders being phased out for all engineering applications?

Lead is NOT being categorically phased out but the use of lead (and cadmium) is being increasingly recognised as being undesirable both in terms of the long term environmental impact and recyclability of products. The End of Life Vehicles (ELV) Directive (2000/53/EC), the RoHS Regulations (2002/95/EC) and WEE Directive (2002/96/EC) prevent the use of certain hazardous substances including lead (and cadmium) containing materials. The use of leaded solder in potable water systems has also been prohibited in Europe and in many countries worldwide.

Are the 1, 2 and 5 Cent Euro coins pure copper?

No, they are made from steel coated with a thin layer of copper.

Adhesion of marine organisms is a major issue in fish farming. Do copper alloys suffer from attachment of micro and macro-organisms?

Copper alloys can harbour slimes, but the attachment of macro-organisms—such as marine grasses and shellfish—is impaired. If these do become attached under quiet conditions, adherence is poor and they can be easily removed mechanically. Copper alloy mesh prolongs the intervals between periodic cleaning, thus promoting a cleaner and healthier environment for aquaculture.

Brass is said to be non-magnetic, but a sample reacts to a magnet. Why?

Probably due to the high iron content from recycled scrap. If a non-magnetic copper alloy is required use a nickel aluminium bronze to Def Stan Specifications (were NES).

Can brass be used for architecture?

Yes, brass and bronze alloys are available.

Can brass fittings be cleaned with industrial cleaners?

Yes, but not cleaners that contain ammonia.

Can chrome plated copper tube be formed into a bend?

Yes, with care and the correct procedure.