3.7*1500mm Straight And Bright Thermocouple Alloy Rod

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3.7*1500mm Straight and Bright Thermocouple Alloy Rod

TYPE K (CHROMEL vs ALUMEL ) is used in oxidizing, inert or dry reducing atmospheres. Exposure to vacuum limited to short time periods. Must be protected from sulfurous and marginally oxidizing atmospheres. Reliable and accurate at high temperatures.

 1. Chemical Composition

MaterialChemical composition (%)
NiCrSiMnAl
KP(Chromel)9010


KN(Alumel)95
1-20.5-1.51-1.5

2. Physical properties and Mechnical properties

 
 
Material
 
 
Density(g/cm3)
 
Melting pointºC)

 
Tensile Strength(Mpa)
 
Volume resistivity(μΩ.cm)
 
Elongation rate (%)
KP(Chromel)8.51427>49070.6(20ºC)>10
KN(Alumel)8.61399>39029.4(20ºC)>15

3. EMF Value range at different temperature

MaterialEMF value Vs Pt(μV)
100ºC200ºC300ºC400ºC500ºC600ºC
KP(Chromel)2816~28965938~60189298~937812729~1282116156~1626619532~19676
KN(Alumel)1218~12622140~21802849~28933600~36444403~44635271~5331
EMF value Vs Pt(μV)
700ºC800ºC900ºC1000ºC1100ºC
22845~2299926064~2624629223~2941132313~3252535336~35548
6167~62477080~71607959~80598807~89079617~9737

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