Platinum / Rhodium Thermocouple Alloy Pt87 / Rh13 - Supplier Data by Goodfellow

Type R thermocouples are made of Platinum / Rhodium Thermocouple Alloy Pt87 / Rh13 and are used when chemical inertness and stability at high temperatures, up to 1750°C, are required.

Key Properties

The key properties of Platinum / Rhodium Thermocouple Alloy Pt87 / Rh13 are tabulated below.

Table 1. Key properties

Electrical Properties
Temperature coefficient ( K-1 ) 0.0016
Electrical resistivity ( µOhm.cm ) 19.0
Mechanical Properties
Elongation at break ( % ) <32
Tensile strength ( MPa ) 330-580
Physical Properties
Density ( g.cm-3 ) 19.64
Melting point ( °C ) 1840-1865

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