Cu-CuNi thermocouple wire(Type-T)

Cu-CuNi thermocouple (type T) is also named Cu-Constantan thermocouple. The positive leg Cu(TP) is made by pure Copper, and the main chemical composition of negative leg Constantan(TN) is Cu: Ni= 55%: 45%, Although EN, TN, JN are all called Constantan, TN and EN don't give the same EMF output curve as JN.EN and TN are able to interchange but they are not interchangeable with JN. The operating temperature range of type T thermocouple is -200~350℃, Due to the low resistance of oxidation that Copper has, it is not advisable to go beyond that range.

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Specification
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Type	Chemical composition (%)
	Ni	Cu	Mn	Si	Al
TP (Cu, Positive)	/	100	/	/	/
TN (CuNi, Negative)	45	55	/	/	/
Standard:lEC60584-1
Type	EMF Versus Pt.67 (mV)
Type	100℃	200℃	300℃
TP	4.229–4.325	9.238–9.334	14.792–14.932
TN	0.760–0.783	1.826–1.846	3.137–3.161
Cu-CuNi (TP-TN)	3.464–3.524	7.412–7.488	11.655–11.771
Physical property
Type	Density at 20℃ (g/cm³)	Melting point (℃)	Tensile Strength (Mpsa, Soft annealed condition in 20℃)	Elongation (%) (Soft annealed condition in 20℃)	Resistivity at 20℃ (μΩ·m)
TP	9	1084	≥190	≥20	0.018
TN	8.9	1220	≥390	≥25	0.5

Danyang Haiven Electric Heating Alloy Co., Ltd. is located in Lucheng Town, Danyang City, Jiangsu Province, China. The company was established in 2010 based on the original company "Danyang Huakang Electric Heating Alloy Co., Ltd." and has been in operation for over 40 years. Since its expansion, the company's total area has reached 30,000 square meters. The company has production lines for a series of products including FeCrAl, Kanthal, CuNi, NiCr, CuMn, Kangtong, Monel, Incoloy, Hastelloy, etc. We have equipped with advanced equipment and processes, capable of providing a complete product range from raw material melting, steel rolling, stretching, heat treatment to finished products and packaging. Standardization work and strict inspections run through every stage of the product. As Haiven people, we have always adhered to the goal of "building a first-class brand and a first-class enterprise". We uphold the spirit of "quality first, reputation foremost", providing customers with the highest quality products and competitive prices. Welcome new and old customers at home and abroad to visit and patronize. Let us achieve long-term win-win cooperation.