Platinum (Pt) soft annealed (+A)

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Description

The group of platinum metals includes the elements ruthenium (Ru), rhodium (Rh), palladium (Pd) (light platinum metals with densities around 12 g/cm³) as well as osmium (Os), iridium (Ir) and platinum (Pt) ( heavy platinum metals with densities up to 22 g/cm³). Platinum is a gray-white malleable metal that melts at 1772°C and has a boiling point of 3827°C. Platinum is machinable, roll-plating galvanic and can be separated from the gas phase. Application: Jewelery, in the automotive, chemical, petrochemical and pharmaceutical industries. Other important fields of application are the glass industry (melting furnaces, spinnerets, electrodes, crucibles for melt digestion of minerals and ferroalloys (also in fine grain stabilized form), crucibles and trays for the ashing and coking of organic matter (also in fine grain stabilized form), for peeling and evaporation of liquids, for electrodes in electroanalysis and potential measurement as well as for porous discs in filtration. Pt is also used as contact material. Pt has almost exactly the same coefficient of expansion as glass, so that it can melt completely tightly into glass and the electrical measuring technique (Pt and Pt / Rh thermocouples). Laboratory equipment such as pots and bowls are hardly made of pure platinum anymore.

Related Standards

This material data has been provided by WIAM.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyTemperatureValue

Density

20.0 °C

21.5 g/cm³

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Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

170 GPa

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Elongation

20.0 °C

40 %

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Hardness, Vickers

20.0 °C

40 - 42 [-]

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Poisson's ratio

20.0 °C

0.39 [-]

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Shear modulus

20.0 °C

66 GPa

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Tensile strength

20.0 °C

125 - 150 MPa

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Yield strength

20.0 °C

14 - 70 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100.0 °C

9.1E-6 1/K

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200.0 °C

9.2E-6 1/K

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300.0 °C

9.3E-6 1/K

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400.0 °C

9.5E-6 1/K

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500.0 °C

9.6E-6 1/K

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600.0 °C

9.7E-6 1/K

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700.0 °C

9.9E-6 1/K

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800.0 °C

1E-5 1/K

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900.0 °C

1.01E-5 1/K

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1000.0 °C

1.03E-5 1/K

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1100.0 °C

1.05E-5 1/K

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1200.0 °C

1.06E-5 1/K

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1300.0 °C

1.08E-5 1/K

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1400.0 °C

1.1E-5 1/K

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1500.0 °C

1.12E-5 1/K

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1600.0 °C

1.14E-5 1/K

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Melting point

1769 °C

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Typical for Platinum

Specific heat capacity

23.0 °C

136 J/(kg·K)

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Typical for Platinum

Thermal conductivity

20.0 °C

74 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical conductivity

20.0 °C

9.40E+6 S/m

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Electrical resistivity

20.0 °C

1.07E-7 Ω·m

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Chemical properties

PropertyValue

Platinum

99.5 - 99.99 %

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