Gold Facts
Gold
From the Old English word "geolo" meaning yellow, gold is probably one of the oldest metals first utilised by ancient metal workers. It's chemical symbol Au comes from the Latin word "aurum" which translated means "golden or shining dawn". Gold pieces dating back to 3000 b.c are evidence of the nobility and beauty of gold, that still survive today as testament to this wonderful metal.The chemical symbol of Gold is Au
The melting temperature of Gold is 1064.43 º C, although when alloyed with other elements such as silver or copper the gold alloy will melt over a range of temperatures.
The atomic weight of Gold is 196.97
The atomic number of Gold is 79
The boiling point of Gold is 2807 º C
The crystal structure of Gold is Cubic
The molar mass of Gold is 196.97 g/mol
Gold has 79 electrons
Gold has 21 isotopes
Gold has 79 protons
The specific gravity of Gold is 19.32
What is Gold?
Gold is a very ductile malleable precious metal. It is a heavy, yellow, metallic chemical element. Gold is used in the manufacture of a wide variety of products including jewellery, electronics, and gift ware to name a few.
Gold finish appearance is pale yellow to orange yellow; there are many colours and tints commercially available.
Gold has excellent corrosion resistance. The higher the carat gold and layer thickness, the greater the long term resistance to oxidation and discolouring.
Gold finishes can be made harder by adding an alloy to the formula; however, in some cases this could limit the maximum layer thickness that could be plated due to embitterment of the plated layer.
What is brush plating?
Brush plating was invented by a French Scientist in 1938 and is a process whereby metal solution is electrochemically deposited on a metal part or in some cases a conductive plastic part in selective areas. The technology has been commercially around for over 45 years.
It also offers a flexible portable process that creates an electrochemical bond between the part being plated and the metal plating solution. This offers a cost effective convenient solution to many customers needs.
It is particularly suited for repair work where the ease of repair is 30 to 60 times faster than conventional tank plating and often improves the surface of the part.
Companies in industries such as aerospace, general maintenance, public utilities, transportation, electronics, electric motors, motor customisation, Jewellers, bathroom accessories to name just a few will all have a need for it.
In brush plating the solution is all used up and therefore you do not have a disposal problem like in tank plating. It is considered environmentally friendly.
Gold Plating
Heavy Gold electroplate - electrolytic plating of gold plating with a minimum thickness of 2.5 microns, may be marked or described as heavy gold electroplate or heavy gold electroplated.Gold Plate - a fine gold, deposited by any means with a minimum thickness 0.5 microns may be marked or described as gold plate, gold plated, or G.P.
Gold Flash - an electrolytic plating of not less than 10 Carat minimum fineness and a thickness of less than 0.175 microns may be only marked or described as gold flash or gold washed.
Generally speaking, the thicker the gold plating the better the durability of the plated item will be. We will be happy to assist you in selecting the most appropriate application of gold plate for your valued items.
For further interesting facts and information please visit:
http://www.responsiblegold.org
http://www.gold.org/
http://www.leadminingmuseum.co.uk/Gold_index.htm