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Brass with the addition of nickel, that has a strong bleaching property, and is extremely easy to work and resistant to corrosion. It is known under such names as Alpaca, Alpacca, Albata, Argentan, Baitong, German Silver, Maillechort, New Silver, Nickel Brass, Nickel Silver, Pakfong, Paktong, etc. and is an alloy consisting of mostly copper and other metals as follows:

Copper 55% approx.

Nickel 20% approx.
Zinc 20% approx.
Tin 05% approx. 
Alpakka is a very durable metal that can be polished to a high lustre shine. Acid will attack and dissolve the zinc causing pitting corrosion, so avoid contact with citric fruits and products containing acid.