Type E Thermocouple Wire

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Due to its high electromotive force (EMF) output and exceptional sensitivity, this thermocouple wire is suitable for detecting small temperature variations. It offers stable performance even at temperatures as low as 300ºC and provides strong corrosion resistance in humid environments. It’s widely used in oxidizing or inert atmospheres, it should be avoided in reducing environments or those containing sulfur compounds to maintain durability and accuracy.

Chemical composition (%)

Material	Chemical composition (%)
Material	Ni	Cr	Cu	Mn	Al
EP(Chromel)	90	10
EN(Constantan)	45		55

Physical and mechanical properties

Material	Density (g/cm3)	Melting point℃	Tensile strength (Mpa)	Volume resistivity (μΩNaN)	Elongation rate (%)
EP(Chromel)	8.5	1427	>490	70.6(20℃)	>25
EN(Constantan)	8.8	1220	>390	49.0(20℃)	>25

EMF value range at different temperatures

Material	EMF Value vs. Platinum (μV)
Material	100℃	200℃	300℃	400℃	500℃	600℃	700℃	800℃
EP (Chromel)	2769~2859	5921~6019	9272~9374	12709~12819	16144~16282	19537~19699	22859~23043	26102~26308
EN (Constantan)	3499~3561	7389~7513	11647~11779	16109~16255	20699~20885	25362~25588	30030~30292	34664~34960