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79 196.970
Au
Gold

Gold , Au

Gold is a chemical element with the symbol Au (from the Latin aurum, meaning shining dawn) and atomic number 79. It is a highly sought-after precious metal which, for many centuries, has been used as money, a store of value and in jewellery.

The metal occurs as nuggets or grains in rocks, underground "veins" and in alluvial deposits. It is one of the coinage metals. Gold is dense, soft, shiny and the most malleable and ductile of the known metals. Pure gold has a bright yellow colour traditionally considered attractive.

Gold formed the basis for the gold standard used before the fiat currency monetary system was employed by the International Monetary Fund (IMF) and the Bank for International Settlements (BIS). It is specifically against IMF regulations to base any currency against gold for all IMF member states. The ISO currency code of gold bullion is XAU.

 

  • Listed below are a selection of some more commonly used sizes. If you do not see anything that suits your needs, please click on the custom request forms and send us your requirements.
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G4-5002-M

Au Pellets 6mm dia. x 6mm long 99.99% Pure

Gold

$62.47/GR
42 GR in stock
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G4-5003-M

Au-Ge Pieces 88-12 wt% 3-6mm 99.99% Pure

Gold-Germanium

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G4-5005-M

Au Pellets 1-3mm 99.99% Pure

Gold

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G4-5007-M

Au Pellets 6.35mm dia. x 6.35mm long 99.999% Pure

Gold

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G4-5013-M

Au Pellets 3.18mm dia. x 3.18mm 99.99% Pure

Gold

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G4-5021-M

Au-Ge Small flakes 88-12wt% 99.99% Pure

Gold-Germanium

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G4-10003-P

AuCl3 -8 Mesh 99% Pure

Gold Chloride

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G4-10004-P

Au2O3 -100 Mesh 99.9% Pure

Gold Oxide

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AU-RD-1.58

Au Rod Diameter 1.588mm (0.0625")

Gold

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AU-RD-12.7

Au Rod Diameter 12.7mm (0.500")

Gold

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AU-RD-15.88

Au Rod Diameter 15.88mm (0.625")

Gold

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AU-RD-19.05

Au Rod Diameter 19.05mm (0.750")

Gold

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AU-RD-25.4

Au Rod Diameter 25.4mm (1.0")

Gold

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AU-RD-3.175

Au Rod Diameter 3.175mm (0.125")

Gold

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AU-RD-6.35

Au Rod Diameter 6.35mm (0.250")

Gold

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AU-SHT-0.25

Au Sheet Thickness 0.25mm (0.010")

Gold

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AU-SHT-0.38

Au Sheet Thickness 0.38mm (0.015")

Gold

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AU-SHT-0.50

Au Sheet Thickness 0.50mm (0.020")

Gold

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AU-SHT-0.76

Au Sheet Thickness 0.762mm (0.030")

Gold

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AU-SHT-1.0

Au Sheet Thickness 1.0mm (0.040")

Gold

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AU-SHT-1.5

Au Sheet Thickness 1.54mm (0.060")

Gold

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AU-SHT-3.175

Au Sheet Thickness 3.175mm (0.125")

Gold

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AU-SHT-6.35

Au Sheet Thickness 6.35mm (0.250")

Gold

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G4-1003-W

Au Wire 2mm dia. 99.999% Pure

Gold

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G4-1005-W

Au Wire 0.1mm dia. 99.99% Pure

Gold

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G4-1007-W

Au Wire 0.2mm dia. 99.99% Pure

Gold

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G4-1011-W

Au Wire 0.5mm dia. 99.99% Pure

Gold

$361.68/MTR
42 MTR in stock
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G4-1013-W

Au Wire 1.0mm dia. 99.99% Pure

Gold

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G4-1015-W

Au Wire 1.5mm dia. 99.99% Pure

Gold

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G4-1017-W

Au Wire 2mm dia. 99.99% Pure

Gold

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G4-1018-W

Au Wire 0.3mm dia. 99.99% Pure

Gold

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G4-9000-D
Gold Au, Availabel purities 99.99% & 99.999%
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G4-9001-D
Gold-Palladium Au-Pd, Available in various ratios wt% or at%, Purity 99.95% & 99.99%
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G4-9002-D
Gold-Silicon Au-Si, Available in various ratios wt% or at%, Purity 99.99%
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G4-9011-D
Gold-Platinum Au-Pt, Available in various ratios wt% or at%, Purity 99.99%
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G4-9013-D
Gold-Silver Au-Ag, Available in various ratios wt% or at%, Purity 99.99%
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AU-F-0.1

Au Foil Thickness 0.1mm (0.004") Purity 99.99%

Gold

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AU-F-0.15

Au Foil Thickness 0.15mm (0.006") Purity 99.99%

Gold

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AU-F-0.2

Au Foil Thickness 0.2mm (0.008") Purity 99.99%

Gold

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G4-3003-F

Au Foil Thickness 0.1mm (.004")

Gold

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G4-3005-F

Au Foil Thickness 0.152mm (.006")

Gold

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G4-3007-F

Au Foil Thickness 0.2mm (.008")

Gold

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G4-9000-D1

Au TRG 60mm dia. x 0.1mm Tk 99.99% Pure

Gold

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G4-9000-D10

Au TRG 57mm dia. x 0.3mm Tk 99.99% Pure

Gold

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G4-9000-D12

Au TRG 57mm dia. x 0.2mm Tk 99.99% Pure

Gold

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G4-9000-D16

Au TRG 57mm dia. x 0.5mm Tk 99.99%

Gold

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G4-9000-D26

Au TRG 57mm dia. x 0.4mm Tk 99.99% Pure

Gold

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G4-9000-D27

Au TRG 54mm dia. x 0.1mm Tk 99.99% Pure

Gold

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G4-9000-D5

Au TRG 73mm dia. x 0.1mm Tk 99.99% Pure

Gold

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G4-9000-D7

Au TRG 57mm dia. x 0.1mm Tk 99.99% Pure

Gold

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G4-9001-D1

AuPd 80/20wt% TRG 57mm dia. x 0.1mm Tk Purity 99.99% 

Gold-Palladium

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G4-9001-D14

AuPd 80/20wt% TRG 76.2mm dia. x 0.2mm Tk Purity 99.99% 

Gold-Palladium

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G4-9001-D16

AuPd 60/40wt% TRG 60mm dia. x 0.2mm Tk Purity 99.99%

 Gold-Palladium

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G4-9001-D4

AuPd 60/40wt% TRG 12.5mm dia. x 0.2mm Tk Purity 99.99%

 Gold-Palladium

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G4-9001-D7

AuPd 60/40wt% TRG 60mm dia. x 0.1mm Tk Purity 99.99% 

Gold-Palladium

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G4-9001-D9

AuPd 80/20wt% TRG 57mm dia. x 0.2mm Tk Purity 99.99% 

Gold-Palladium

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Can't find what you are looking for?

G4-9000-D104

Au TRG  25.4mm dia. x 3.18mm Tk 99.999% Pure

Gold

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G4-9000-D107

Au TRG  50.8mm dia. x 3.18mm Tk 99.999% Pure

Gold

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G4-9000-D113

Au TRG  25.4mm dia. x 3mm Tk 99.99% Pure

Gold

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G4-9000-D22

Au TRG  50.8mm dia. x 2mm Tk 99.99% Pure

Gold

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G4-9000-D32

Au TRG  50.8mm dia. x 3.18mm Tk 99.99% Pure

Gold

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G4-9000-D39

Au TRG  25.4mm dia. x 3.18mm Tk 99.99% Pure

Gold

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G4-9000-D48

Au TRG  50.8mm dia. x 0.5mm Tk 99.99% Pure

Gold

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G4-9000-D50

Au TRG 50.8mm dia. x 3mm tk 99.99% pure

Gold

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G4-9000-D56

Au TRG 50.8mm dia. x 1mm Tk 99.99% Pure

Gold

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G4-9000-D59

Au TRG  76.2mm dia. x 1mm Tk 99.99% Pure

Gold

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G4-9000-D86

Au TRG  76.2mm dia. x 3mm Tk 99.99% Pure

Gold

Enquire

Modern industrial uses include dentistry and electronics, where gold has traditionally found use because of its good resistance to oxidative corrosion.

Chemically, gold is a trivalent and univalent transition metal. Gold does not react with most chemicals, but is attacked by chlorine, fluorine, aqua regia and cyanide. Gold dissolves in mercury, forming amalgam alloys, but does not react with it. Gold is insoluble in nitric acid, which will dissolve silver and base metals, and this is the basis of the gold refining technique known as "inquartation and parting". Nitric acid has long been used to confirm the presence of gold in items, and this is the origin of the colloquial term "acid test," referring to a gold standard test for genuine value.

Symbol Au
Atomic Number 79
No. of naturally occurring isotopes 1
Atomic weight 196.9665
Electronic configuration [Xe]4f145d106s4
Metal radius (12coordinate)/pm 144
Effective ionic radius)6-coord)/pm V 57
Effective ionic radius(6-coord)/pm III 85
Effective ionic radius(6-coord)/pm II -
Effective ionic radius(6-coord)/pm I 137
Electronegativity χ 2.4
Density (20°C)/gcm-3 19.32
Melting point /°C 1064
Boiling point /°C 2808
ΔHvap/kJmol-1 12.8
ΔHfus/kJmol-1 343(+/-U)
ΔHf(monoatomic gas)/kJmol-1 379(+/-8)
Ionization energy/kJmol-1 I 889.9
Ionization energy/kJmol-1 II 1973.3
Ionization energy/kJmol-1 III -2895
Electrical resistivity
(20°C)/μohm cm 2.35
Temperature (oC) @Vap. Pressure
10-8 Torr 807
10-6 Torr 947
10-4 Torr 1132
Techniques
Electron Beam Excellent
Crucible Al2O3, BN & Vitreous Graphite
Coil Tungsten
Boat Tungsten, Molybdenum coated Al2O3
Remarks
Films soft. Not very adherent.