Iridium (Ir) hard

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Description

The brittle, silver-white precious metal material Iridium (Ir) belongs to the heavy platinum metals (density up to 22 g/cm³). It is the most durable of all platinum metals, non-ductile, resistant to oxidation up to 800°C and is not attacked by aqua regia (in the heat it dissolves in concentrated NaCO3-containing hydrochloric acid). Due to its hardness and brittleness, it is hardly deformable, it can be machined and can be limited separated from the gas phase. Application: Iridium is used primarily as a catalyst in the reaction of gases and as a component of very hard alloys for electrical contacts and Füllfederspitzen used for crucibles and thermocouples.

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

22.4 g/cm³

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Mecánica

PropertyTemperatureValue

Coeficiente de Poisson

20.0 °C

0.26 [-]

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Dureza Vickers

20.0 °C

650 [-]

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Módulo de cizallamiento

20.0 °C

210 - 214 GPa

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Módulo elástico

-180.0 °C

560 GPa

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20.0 °C

528 - 538 GPa

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200.0 °C

520 GPa

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400.0 °C

499 GPa

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500.0 °C

488 GPa

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600.0 °C

478 GPa

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800.0 °C

456 GPa

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900.0 °C

445 GPa

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1000.0 °C

434 GPa

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Resistencia a la tracción

20.0 °C

1200 MPa

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Aplicaciones térmicas

PropertyTemperatureValueComment

Calor específico

23.0 °C

130 - 132 J/(kg·K)

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Typical for Iridium

Coeficiente de dilatación térmica

100.0 °C

6.7E-6 1/K

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300.0 °C

7.1E-6 1/K

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900.0 °C

7.8E-6 1/K

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1000.0 °C

7.9E-6 1/K

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1100.0 °C

8E-6 1/K

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1200.0 °C

8.1E-6 1/K

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1300.0 °C

8.2E-6 1/K

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1400.0 °C

8.4E-6 1/K

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1500.0 °C

8.5E-6 1/K

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1600.0 °C

9.2E-6 1/K

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Conductividad térmica

-73.0 °C

149 W/(m·K)

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20.0 °C

59 W/(m·K)

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127.0 °C

136 W/(m·K)

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327.0 °C

130 W/(m·K)

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527.0 °C

125 W/(m·K)

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727.0 °C

121 W/(m·K)

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927.0 °C

117 W/(m·K)

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1127.0 °C

110 W/(m·K)

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1327.0 °C

106 W/(m·K)

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1527.0 °C

103 W/(m·K)

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Temperatura de fusión

2447 °C

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Typical for Iridium

Eléctrico

PropertyTemperatureValue

Resistividad eléctrica

20.0 °C

4.9E-8 Ω·m

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Chemical properties

PropertyValue

Iridio

99.9 %

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