PtIr10 soft annealed (+A)

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The platinum-iridium material PtIr10, also Pt10Ir, Pt90Ir10, for jewelery alloys Pt / Ir900 or Pt900 / Ir100 shows a very good corrosion behavior as well as good wear properties. He will u. a. for mains electrodes in gravimetry as well as for sliding contacts and switching contacts as well as for laboratory equipment or structural components such as B. satellite control nozzles that are mechanically stressed, thermally and corrosively heavily used. The mechanical, thermal and corrosive resistance increases with increasing iridium content. In an oxidizing atmosphere, increased weight loss occurs in platinum-iridium alloys. This material is widely used as a jewelry alloy for forming and machining. When used for sliding contacts, the platinum-iridium material shows very good corrosion behavior as well as good wear behavior. PtIr10, used for switches and relays for higher AC loads (currents over 300 mA at voltages over 12 V) with a long service life. Another field of application for this material is the use as a potentiometer alloy.

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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20.0 °C

21.6 g/cm³

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Elastic modulus

20.0 °C

220 GPa

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20.0 °C

25 %

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Hardness, Vickers

20.0 °C

105 [-]

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Poisson's ratio

23.0 °C

0.39 [-]

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Typical for Platinum

Shear modulus

23.0 °C

62 GPa

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Typical for Platinum

Tensile strength

20.0 °C

340 MPa

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Yield strength

20.0 °C

220 MPa

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Yield strength Rp0.2

20.0 °C

220 MPa

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Coefficient of thermal expansion

23.0 °C

8.8E-6 - 9.1E-6 1/K

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Typical for Platinum

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

29 W/(m·K)

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Electrical conductivity

20.0 °C

4.50E+6 S/m

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Electrical resistivity

20.0 °C

2.22E-7 Ω·m

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Chemical properties



10 %

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90 %

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