Main information:

Product name:Brass decoration (Cross)

Model: BD015

Brand: B&R

Application:Coffin, Tombstone ,cemetery or others.

Origin: China

Manufacturer: Sumer International (Beijing) Trading Co.,Ltd

Product detail:

Size: 10cm (height)

Material: Brass (Copper alloy)

Color /finishing: Antique bronze

MOQ:500-1000 pcs

Packing: Carton

Main feature:

Professionally engaged in funeral field over 10 years;

Customized products acceptable;

Good quality and competitive price;

More information:

History

Although forms of brass have been in use since prehistory, its true nature as a copper-zinc alloy was not understood until the post medieval period because the zinc vapor which reacted with copper to make brass was not recognised as a metal.The King James Bible makes many references to "brass".The Shakespearean English form of the word 'brass' can mean any bronze alloy, or copper, rather than the strict modern definition of brass.[citation needed] The earliest brasses may have been natural alloys made by smelting zinc-rich copper ores.By the Roman period brass was being deliberately produced from metallic copper and zinc minerals using the cementation process, and variations on this method continued until the mid-19th century.It was eventually replaced by speltering, the direct alloying of copper and zinc metal which was introduced to Europe in the 16th century.

Early copper zinc alloys

In West Asia and the Eastern Mediterranean early copper zinc alloys are now known in small numbers from a number of third millennium BC sites in theAegean, Iraq, the United Arab Emirates, Kalmykia, Turkmenistan and Georgia and from 2nd Millennium BC sites in West India, Uzbekistan, Iran, Syria, Iraq and Palestine.[42] However, isolated examples of copper-zinc alloys are known in China from as early as the 5th Millennium BC.
The compositions of these early "brass" objects are highly variable and most have zinc contents of between 5% and 15% wt which is lower than in brass produced by cementation. These may be "natural alloys" manufactured by smelting zinc rich copper ores in redox conditions. Many have similar tin contents to contemporary bronze artefacts and it is possible that some copper-zinc alloys were accidental and perhaps not even distinguished from copper.However the large number of copper-zinc alloys now known suggests that at least some were deliberately manufactured and many have zinc contents of more than 12% wt which would have resulted in a distinctive golden color.

BRASS ALLOYS

More Picture:

Brass decoration vase,lantern ,scroll and leaves

Raw material of brass decoration

Copper mine