Alloys for extension leads and compensating cables

Kanthal® thermocouple alloys are also used to manufacture extension leads/cables. Some additional alloys, listed below, are provided for compensating cables (designations according to IEC standard in brackets).

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Thermocouple Compensating cable Alloy Temperature
range °C (°F)
Type K WPX
WNX
(KCA)
Iron
Cuprothal WX
-
0 to +150 (+32 to 300)
-
-
Type K VPX
VNX
(KCB)
Copper
Cuprothal VX
-
0 to +100 (+32 to 200)
-
-
Type S, R* (Pt/PtRh) Cu
SNX
(RCA-SCA)
(RCB-SCB)
Copper
Cuprothal SX
-
-
-
-
0 to +100 (+32 to 200)
0 to +200 (+32 to 400)

*Not within the Kanthal program