PtRh20 soft annealed (+A)

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Description

The material PtRh20 (in the literature also Pt20Rh, Pt80Rh20 or PtRh80/20) is used for highly stressed laboratory equipment, catalysts, electrodes, glass fiber nozzles and lining materials, for crucibles, casings and stirrers in viscometry as well as for glass melting tanks. The mechanical, thermal and corrosive resistance increases with increasing rhodium content. An advantage of the platinum-rhodium alloy is that even in an oxidizing atmosphere only a minimum of weight loss occurs. The material is ductile, corrosion-resistant, oxidation-resistant and high temperature resistant. It is machinable, roll-cladable and conditionally deductible from the gas phase.

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

18.7 g/cm³

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

240 GPa

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Elongation

20.0 °C

32 %

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Hardness, Vickers

20.0 °C

113 [-]

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Poisson's ratio

23.0 °C

0.39 [-]

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Typical for Platinum

Shear modulus

20.0 °C

86 GPa

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Tensile strength

20.0 °C

380 MPa

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Yield strength

20.0 °C

110 MPa

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Yield strength Rp0.2

20.0 °C

110 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

300.0 °C

1.04E-5 1/K

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700.0 °C

1.09E-5 1/K

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1200.0 °C

1.15E-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

28 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

2.08E-7 Ω·m

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Chemical properties

PropertyValue

Platinum

80 %

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Rhodium

20 %

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