Type K is the most common thermocouple conductor(≥500℃), it has a good resistance against oxidation and can be recommended for oxidizing and inert atmospheres.It can not be used in sulphurous and vacuum atmospheres directly at a high temperature,as this will have a significant impact on the EMF values. The composition of positive(KP) is Ni90Cr10, negative(KN) is Ni97Si3.

Type J thermocouple alloys is suitable for using in vacuum, oxidizing and reducing atmospheres or inert gas atmospheres. Because of high temperature oxidizing quickly for JP, the measuring temperature range is restricted. The composition of positive(JP) is Fe100, negative(JN) is Cu55Ni45.

Type T thermocouple conductor is suitable for temperature below 0℃ with an upper temperature limit of 350℃(ASTM E230:370℃) and can be used in oxidizing and reducing atmospheres or inert gas atmospheres,The composition of positive(TP) is Cu100,negative(TN) is Cu55Ni45.

Type E bare thermocouple wire develops the highest source voltage(EMF) per℃ for measuring tiny temperature shift,it is suitable in oxidizing or inert gas atmospheres up to 900℃(ASTM E230:870℃), The composition of positive(EP) is Ni90Cr10, negative(EN) is Cu55Ni45.

Type N thermocouple conductor is suitable in the similar atmospheres with type K and the operating temperature is -200-1300℃. Its advantage is thermoelectric stability. The composition of positive(NP) is approximately Ni84.4Cr14.2Si1.4, negative(NN) is Ni95.5Si4.4Mg0.1.

SICC can supply Extension and Compensating bare thermocouple wire meet the standard IEC60584 and ASTM E230, The advanced melting skills combined controls the chemical composition to achieve the highest quality products , our produce base has the capacity of 900 tons annual that can meet your comprehensive requirements. whatever the bright annealed or oxidized conditions,all thermocouple conductors are calibrated at our lab ,this includes the testing of EMF, chemical composition,physical and thermoelectric properties before shipment.