Product Code : PO-Au-2N-CU
This metal has been known since prehistoric times Gold is a soft metal with a characteristic yellow color. Most mined gold is stored as bullion. It is the most malleable and ductile of any element. It is unaffected by air, water, alkalis and acids, with the exception of "aqua regia", HNO₃/HCl. The fact that it is chemically unreactive means that it is often found in its natural state.
ATT is a professional supplier of high-purity Gold Powder. The purity can be 99.99%(4N), 99.995%(4N5), 99.999%(5N). Ruthenium Metal is available as disc, granules, ingot, pellets, pieces, powder , rod, wire, sputtering target and in numerous other forms and custom shapes.
Please contact us if you need customized services. We will contact you with the price and availability in 24 hours.
| Product | Product Code | Purity | Size | Contact Us |
Product Information
This metal has been known since prehistoric times Gold is a soft metal with a characteristic yellow color. Most mined gold is stored as bullion. It is the most malleable and ductile of any element. It is unaffected by air, water, alkalis and acids, with the exception of "aqua regia", HNO₃/HCl. The fact that it is chemically unreactive means that it is often found in its natural state. It is a good thermal and electrical conductor and has excellent reflective properties to both light and infrared. It has an abundance in the earth's crust of 0.0011 ppm. Most of the metal is retained for use as bullion reserves, but some is used within the electronics and jewellery industries, where it is frequently alloyed with other elements to improve the mechanical properties of the metal (e.g. copper and silver). Other uses for the metal are as a heat reflecting coating for glass as well as as a decorative medium.
It is also, however, used extensively in jewellery, either in its pure form or as an alloy. The term ‘carat’ indicates the amount of gold present in an alloy. 24-carat is pure gold, but it is very soft. 18- and 9-carat gold alloys are commonly used because they are more durable. Gold metal is also used for coinage, and has been used as the standard for monetary systems in some countries. Gold can be beaten into very thin sheets (gold leaf) to be used in art, for decoration and as architectural ornament. Electroplating can be used to cover another metal with a very thin layer of gold. This is used in gears for watches, artificial limb joints, cheap jewellery and electrical
ATT is a professional supplier of high-purity Gold Powder. The purity can be 99.99%(4N), 99.995%(4N5), 99.999%(5N). Ruthenium Metal is available as disc, granules, ingot, pellets, pieces, powder , rod, wire, sputtering target and in numerous other forms and custom shapes.
Synonyms
Gold particles, Gold microparticles, Gold micropowder, Gold micro powder, Gold micron powder, Gold submicron powder, Gold sub-micron powder.
Gold Powder Specification
Size：Our standard powder particle sizes average in the range of - 325 mesh, - 100 mesh, 10-50 microns and submicron (< 1 micron). We can also provide many materials in the nanoscale range ,customized
Purity:2N(99%), 3N5(99.95%), 4N(99.99%), 4N5(99.995%),5N(99.999%).
Per your request or drawing
We can customized as required
Properties（Theoretical）
| Molecular Weight | 196.97 |
| Appearance | Yellow |
| Melting Point | 1064.4°C |
| Boiling Point | 3080 °C |
| Density | 19.3 g/cm3 |
| Electrical Resistivity | 2.214 microhm-cm @ 20 °C |
| Electronegativity | 2.4 Paulings |
| Material condition | Soft |
| Material condition | Hard |
| Poisson's ratio ( Hard ) | 0.42 |
| Poisson's ratio ( Soft ) | 0.42 |
| Heat of Vaporization | 81.8 K-Cal/gm atom at 3080 °C |
| Specific Heat | 0.308 Cal/g/K @ 25 °C |
| Vickers Hardness | 216 MPa |
| Hardness - Vickers ( kgf mm⁻² ) ( Hard ) | 60 |
| Hardness - Vickers ( kgf mm⁻² ) ( Soft ) | 20 - 30 |
| Thermal Conductivity | 3.18 W/cm/K @ 298.2 K |
| Thermal Expansion | (25 °C) 14.2 µm·m-1·K-1 |
| Tensile strength ( MPa ) ( Hard ) | 220 |
| Young's Modulus | 79 GPa |
| Tensile strength ( MPa ) ( Soft ) | 130 |
| Yield strength ( MPa ) ( Hard ) | 205 |
| Latent heat of evaporation ( J g⁻¹ ) | 1738 |
| Latent heat of fusion ( J g⁻¹ ) | 64.9 |
| Bulk modulus ( GPa ) ( Hard ) | 171 |
| Bulk modulus ( GPa ) ( Soft ) | 171 |
| Tensile modulus ( GPa ) ( Hard ) | 78.5 |
| Tensile modulus ( GPa ) ( Soft ) | 78.5 |
| Temperature coefficient ( K⁻¹ ) | 0.00400 @0-100°C |
| Thermal emf against Pt (cold 0C - hot 100C) ( mV ) | 0.74 |
Chemical composition
Purity：3N5（99.95%）
| Element | Value |
| Si | 1 PPM |
| Mg | 1 PPM |
| Ag | 80 PPM |
| Fe | 3 PPM |
| Cu | 10 PPM |
We can customized as required
Chemical composition
Purity：4N（99.99%）
| Element | Value | Element | Value |
| Pd | 0.001 | Ir | 0.001 |
| Pt | 0.001 | Ag | 0.0005 |
| Ru | 0.001 | Cu | 0.0005 |
| Fe | 0.0005 | Al | 0.0005 |
| Pb | 0.0001 | Sn | 0.0005 |
| Mn | 0.0001 | Si | 0.0005 |
| Mg | 0.0001 | Zn | 0.0001 |
| Bi | 0.0001 | Ni | 0.0001 |
Applications of Gold Powder
Most of the metal is retained for use as bullion reserves, but some is used within the electronics and jewellery industries, where it is frequently alloyed with other elements to improve the mechanical properties of the metal (e.g. copper and silver). Other uses for the metal are as a heat reflecting coating for glass as well as as a decorative medium. It is also, however, used extensively in jewellery, either in its pure form or as an alloy. The term ‘carat’ indicates the amount of gold present in an alloy. 24-carat is pure gold, but it is very soft. 18- and 9-carat gold alloys are commonly used because they are more durable. Gold metal is also used for coinage, and has been used as the standard for monetary systems in some countries. Gold can be beaten into very thin sheets (gold leaf) to be used in art, for decoration and as architectural ornament. Electroplating can be used to cover another metal with a very thin layer of gold. This is used in gears for watches, artificial limb joints, cheap jewellery and electrical
Packing of Gold Powder
Standard Packing:
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes Special package is available on request.
ATTs’ High Purity Gold Powder is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.
Chemical Identifiers
| Linear Formula | Au |
| CAS #: | 7440-57-5 |
| MDL Number | MFCD00003436 |
| EC No. | 231-165-9 |
| Beilstein/Reaxys No. | N/A |
| Pubchem CID | 23985 |
| SMILES | [Au] |
| InchI Identifier | InChI=1S/Au |
| InchI Key | PCHJSUWPFVWCPO-UHFFFAOYSA-N |
