
Anti -Oxidation Type E Thermocouple Wire Chromel/Constantan for electricity chemical
TYPE E (CHROMEL vs Constantan) may be used in oxidizing, inert or dry reducing atmospheres, or for short periods of time under vacuum. Must be protected from sulfurous and marginally oxidizingatmospheres. Produces the highest EMF per degree o any standardized thermocouple.
1. Chemical Composition
Material | Chemical composition (%) | ||||
Ni | Cr | Cu | Mn | Al | |
EP(Chromel) | 90 | 10 | |||
EN(Constantan) | 45 | 55 |
2. Physical properties and Mechnical properties
Material | Density(g/cm3) | Melting point℃) | Tensile Strength(Mpa) | Volume resistivity(μΩ.cm) | Elongation rate (%) |
EP(Chromel) | 8.5 | 1427 | >490 | 70.6(20℃) | >25 |
EN(Constantan) | 8.8 | 1220 | >390 | 49.0(20℃) | >25 |
3. EMF Value range at different temperature
Material | EMF value Vs Pt(μV) | |||||
100℃ | 200℃ | 300℃ | 400℃ | 500℃ | 600℃ | |
KP(Chromel) | 2769~2859 | 5921~6019 | 9272~9374 | 12709~12819 | 16144~16282 | 19537~19699 |
EN(Constantan) | 3499~3561 | 7389~7513 | 11647~11779 | 16109~16255 | 20699~20885 | 25362~25588 |
EMF value Vs Pt(μV) | ||||
700℃ | 800℃ | 900℃ | 1000℃ | 1100℃ |
22859~23043 | 26102~26308 | |||
30030~30292 | 34664~34960 |
Ohmalloy Material Co.,Ltd
Ohmalloy Material Co.,Ltd is a high-tech enterprise which specialized in making all kinds of alloy such as high resistance alloy, low-resistance copper nickel alloy, precision alloy, FeCrAl alloy and thermocouple Alloy.
Ohmalloy Material Co.,Ltd have a full production line from melting, surface cleaning, rolling and slitting, full set of testing machine and can meet all kinds of technical requirement from customer. Our product is widely used in heating equipment, big steel mill, mineral, electrical equipment, food machinery, auto industry, aerospace industry. Our product not only is popular in domestic market, but also been exported to all over the world.
Our company aims to be the best-quality alloy producer in the
world. We insist on developing the more advanced alloy strip
technology, to serve all the customer, improve people’s living
level, make a more green earth in the future