Gold
MATERIAL OVERVIEW
Characteristics: Yellow, ductile metal, relatively soft, does not corrode in air, but is tarnished by sulfur. Chemically nonreactive and nontoxic; attacked by chlorine and cyanide solutions in presence of oxygen. Soluble in aqua regia; insoluble in acids. Excellent reflector of infrared and heat. Extremely high light reflectivity. Nontoxic.
ESPI has many years experience manufacturing gold foils, sheets, rods, wires and custom shapes. If you don't see a size or form that you are looking for, just contact us. We will do our best to meet your needs.
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GENERAL PROPERTIES
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Symbol: |
Au |
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Atomic Number: |
79 |
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Atomic Weight: |
196.9665 |
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Density: |
19.3 gm/cc |
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Melting Point: |
1064.43 oC |
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Boiling Point: |
3080 oC |
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Thermal Conductivity: |
3.18 W/cm/K @ 298.2 K |
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Electrical Resistivity: |
2.214 microhm-cm @ 20 oC |
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Electronegativity: |
2.4 Paulings |
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Specific Heat: |
0.308 Cal/g/K @ 25 oC |
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Heat of Vaporization: |
81.8 K-Cal/gm atom at 3080 oC |
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Heat of Fusion: |
3.03 Cal/gm mole |
TYPICAL ANALYSES - Impurities in ppm
| Material / Purity: | 3N5 | 4N | 5N |
| Ag | 190 | 35 | 5 |
| Ca | 5 | 1 | <1 |
| Cu | 10 | 10 | - |
| Fe | 45 | 7 | <1 |
| Si | 5 | <2 | - |
| Pd | 110 | 17 | - |
| Pt | <130 | <20 | - |
GOLD WIRE
| Material | Purity |
| Gold Wire .001” | 3N5, 4N, 5N |
| Gold Wire .002” | 3N5, 4N, 5N |
| Gold Wire .003” | 3N5, 4N, 5N |
| Gold Wire .004” | 3N5, 4N, 5N |
| Gold Wire .005” |
3N5, 4N, 5N |
| Gold Wire .006" | 3N5, 4N, 5N |
| Gold Wire .007" | 3N5, 4N, 5N |
| Gold Wire .008" | 3N5, 4N, 5N |
| Gold Wire .009" | 3N5, 4N, 5N |
| Gold Wire .010" | 3N5, 4N, 5N |
| Gold Wire .015" | 3N5, 4N, 5N |
| Gold Wire .020" | 3N5, 4N, 5N |
| Gold Wire .025" | 3N5, 4N, 5N |
| Gold Wire .030" | 3N5, 4N, 5N |
| Gold Wire .040" | 3N5, 4N, 5N |
| Gold Wire .060" | 3N5, 4N, 5N |
| Gold Wire .080" | 3N5, 4N, 5N |
| Gold Wire .090" | 3N5, 4N, 5N |
Wire diameters are available in increments of .001”. Wire is spooled to order and sold by the foot or meter. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters or custom sizes.
GOLD ROD
| Material | Purity |
| Gold Rod .0625” | 3N5, 4N, 5N |
| Gold Rod .125” | 3N5, 4N, 5N |
| Gold Rod .250” | 3N5, 4N, 5N |
| Gold Rod .500” | 3N5, 4N, 5N |
| Gold Rod .625” | 3N5, 4N, 5N |
| Gold Rod .750” | 3N5, 4N, 5N |
| Gold Rod 1” | 3N5, 4N, 5N |
Rod is made to order and sold by the inch or foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters or custom sizes.
GOLD FOIL
| Material | Purity |
| Gold Foil .001” | 3N5, 4N, 5N |
| Gold Foil .002” | 3N5, 4N, 5N |
Gold Foil .003”   |
3N5, 4N, 5N |
Gold Foil .004”    |
3N5, 4N, 5N |
| Gold Foil .005” | 3N5, 4N, 5N |
| Gold Foil .006” | 3N5, 4N, 5N |
| Gold Foil .007” | 3N5, 4N, 5N |
| Gold Foil .008” | 3N5, 4N, 5N |
| Gold Foil .009” | 3N5, 4N, 5N |
Foil is made to order and sold by the square inch or square foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional thicknesses or custom sizes.
GOLD SHEET
| Material | Purity |
| Gold Sheet .010” | 3N5, 4N, 5N |
| Gold Sheet .015" | 3N5, 4N, 5N |
| Gold Sheet .020" | 3N5, 4N, 5N |
| Gold Sheet .025" | 3N5, 4N, 5N |
| Gold Sheet .030" | 3N5, 4N, 5N |
| Gold Sheet .040" | 3N5, 4N, 5N |
| Gold Sheet .050" | 3N5, 4N, 5N |
| Gold Sheet .060" | 3N5, 4N, 5N |
| Gold Sheet .062" | 3N5, 4N, 5N |
| Gold Sheet .070" | 3N5, 4N, 5N |
| Gold Sheet .080" | 3N5, 4N, 5N |
| Gold Sheet .125" | 3N5, 4N, 5N |
Sheet thicknesses are available in increments of .001”. Sheet is made to order and sold by the square inch or square foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional thicknesses or custom sizes.
GOLD SPUTTERING TARGETS
| Material | Purity |
| Gold Sputtering Target 2"D X .125"T | 3N5, 4N, 5N |
| Gold Sputtering Target 2"D X .250"T | 3N5, 4N, 5N |
| Gold Sputtering Target 3"D X .125"T | 3N5, 4N, 5N |
| Gold Sputtering Target 3"D X .250"T | 3N5, 4N, 5N |
| Gold Sputtering Target 4"D X .125"T | 3N5, 4N, 5N |
| Gold Sputtering Target 4"D X .250"T | 3N5, 4N, 5N |
Targets are made to order and packaged individually. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters, thicknesses or custom sizes.
GOLD POWDER, SHOT, PELLETS, & INGOT
| Material | Purity |
| Gold Shot 3-6mm | 3N5, 4N, 5N |
| Gold Pellets .125"D X .125"L | 3N5, 4N, 5N |
| Gold Pellets .250"D X .250"L | 3N5, 4N, 5N |
| Gold Ingot | 3N5, 4N, 5N |
| Gold Powder-100 Mesh | 3N5, 4N, 5N |
| Gold Powder-325 Mesh | 3N5, 4N, 5N |
Powder, shot, pellets, and ingots are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional sizes, specifications or custom requirements.
GOLD COMPOUNDS
| Material | Purity |
Chloroauric Acid HAuCl4-xH2O  |
4N |
| Gold Acetate Au(O2CCH3)3 |
4N |
| Gold Chloride AuCl |
3N 3N5+ |
| Gold Cyanide AuCN |
3N 3N5+ |
| Gold Sodium Cyanide NaAu(CN)2 |
3N 3N5+ |
| Gold Nitrate HAu(NO3)4 · xH2O (Hydrogen Tetranitratoaurate) |
4N |
| Potassium Dicyanoaurate KAu(CN)2 |
3N |
| Sodium Tetrachloroaurate NaAuCl4-2H2O |
4N |
Compounds are packaged to order and sold by the gram or kilogram. For Gold single crystals see “Single Crystals.”
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ALLOYS 
