Copper is generally most suitable but cupro nickel or gilding metal are also used.
From the en.wikipedia.org
Gilding metal is the softest type of brass commonly available.
From the en.wikipedia.org
It is made out of a combination of brass, copper, sterling silver, gilding metal, aluminium, chrome and rhodium.
From the en.wikipedia.org
Forty, A. J.Corrosion micromorphology of noble metal alloys and depletion gilding.
From the nature.com
It had its own little metal gate, with traces of gilding on the rusting iron.
From the denverpost.com
People who've become curators of the dying techniques of gilding, engraving, etching, enameling, mosaics and repousse metal work refurbish antique pieces.
From the denverpost.com
The ether will be found to have taken up all the gold from the acid, and may be used for gilding iron or steel, for which purpose the metal is polished with fine emery and spirits of wine.
From the en.wikipedia.org
Minoan metal masters worked with imported gold and copper and mastered techniques of wax casting, embossing, gilding, nielo, and granulation.
From the en.wikipedia.org
The term gilding covers a number of decorative techniques for applying fine gold leaf or powder to solid surfaces such as wood, stone, or metal to give a thin coating of gold.