Gold (Au) deformed condition

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Description

Gold (Au) is a reddish-yellow, in very thin films blue-green translucent, cubic crystallizing precious metal. It is one of the heaviest metals, is relatively soft and very elastic. Among all metals, it has the best hot and cold ductility and can be hammered down to foil up to 0.0001 mm thick. Gold, which does not oxidize even at higher temperatures, forms alloys with almost all metals. Even small alloy additions can significantly increase the strength and hardness of gold and change its color (white gold: Pt, Pd, Ni / color gold: Cu). The chemical properties of gold characterize the concept of the precious metal par excellence. Thus, at normal temperature, Au is not attacked by dry and moist air, water, oxygen, fluorine, iodine, sulfur, as well as the vast majority of acids, aqueous salt solutions and alkalis, regardless of the concentration. In the electrical industry (just under 10% of gold consumption), the material gold is used for switching contacts (dry circuits with the smallest currents and voltages), plug contacts, transistor and IC carriers, ultrafine wires for semiconductors and anodes. It is very ductile, corrosion-resistant, oxidation-resistant, has a tendency to cold sweat. Au is machineless and machinable, roll-galvanized galvanic and can be separated from the gas phase.

Related Standards

Los datos sobre este material han sido proporcionados por WIAM.

A menos que se indique lo contrario, todas las medidas corresponden a condiciones de temperatura ambiente. A menos que se indique lo contrario, se utilizan las unidades del SI.
Las normas armonizadas son similares a uno o varios estándares del proveedor. Es posible que algunas normas armonizadas se ajusten al estándar original, mientras que otras pueden quedar fuera de su alcance.

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Propiedades

General

PropertyTemperatureValue

Densidad

20.0 °C

19.3 g/cm³

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Mecánica

PropertyTemperatureValue

Coeficiente de Poisson

20.0 °C

0.42 [-]

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Dureza Vickers

20.0 °C

90 [-]

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Elongación

20.0 °C

3 %

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Límite elástico

20.0 °C

260 MPa

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Módulo de cizallamiento

20.0 °C

28 GPa

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Módulo elástico

20.0 °C

78 GPa

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Resistencia a la tracción

20.0 °C

300 MPa

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Aplicaciones térmicas

PropertyTemperatureValueComment

Calor específico

23.0 °C

126 - 138 J/(kg·K)

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Typical for Gold

Coeficiente de dilatación térmica

100.0 °C

1.39E-5 1/K

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200.0 °C

1.48E-5 1/K

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300.0 °C

1.52E-5 1/K

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400.0 °C

1.53E-5 1/K

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500.0 °C

1.55E-5 1/K

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600.0 °C

1.57E-5 1/K

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700.0 °C

1.59E-5 1/K

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800.0 °C

1.62E-5 1/K

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Conductividad térmica

-233.0 °C

420 W/(m·K)

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-173.0 °C

360 W/(m·K)

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-73.0 °C

326 W/(m·K)

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20.0 °C

312 W/(m·K)

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127.0 °C

309 W/(m·K)

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327.0 °C

296 W/(m·K)

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527.0 °C

284 W/(m·K)

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727.0 °C

271 W/(m·K)

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Temperatura de fusión

1064 °C

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Typical for Gold

Eléctrico

PropertyTemperatureValue

Conductividad eléctrica

20.0 °C

4.30E+7 S/m

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Resistividad eléctrica

20.0 °C

2.3E-8 - 2.9E-8 Ω·m

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Chemical properties

PropertyValue

Oro

99.99 %

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