NiCr-CuNi(constantan)thermocouple wire (Type-E)

NiCr- CuNi thermocouple (type E) is also named NiCr- Constantan thermocouple. The main chemical composition of positive leg NiCr (EP) is Ni: Cr=90:10; negative leg Constantan (EN) is Cu: Ni= 55%: 45%. Although EN, TN, and JN are all called Constantan, EN and TN do not 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 the type E thermocouple is -200-900℃。
Type E thermocouple has the largest EMF output and highest sensitivity, so it is ideal for measuring small temperature changes. It also has good stability in the low temperature range up to 300 ℃, and good anti-corrosion properties in humidity atmosphere. It is recommended for oxidizing or inert atmospheres, but cannot be used directly in reducing atmosphere and atmosphere with sulphur gases.

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Specification
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Type	Chemical composition (%)
	Ni	Cr	Cu	Si	Al
EP (Nicr, Positive)	90	10	/	/	/
EN (CuNi, Negative)	45	/	55	/	/
Standard: IEC60584-1
Type	EMF Versus Pt.67 (mV)
Type	100℃	200℃	400℃	600℃	800℃
EP	2.784–2.844	5.938–6.002	12.709–12.819	19.537–19.699	26.102–26.308
EN	3.467–3.543	7.410–7.492	16.109–16.255	25.362–25.588	34.664–34.960
EP-EN	6.251–6.387	13.348–13.494	28.818–29.074	44.899–45.287	60.766–61.268
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)
EP	8.5	1427	≥490	≥10	0.71
EN	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.