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Digital Material Constantan Foil for Thermocouple

Basic Info

Model No.:  K

Product Description

Model NO.: K Status: Bright or Oxidized Trademark: UALLOY Origin: Zhejiang China Size: 0.5mm*4mm MOQ: 30-50kg Specification: Customized HS Code: 7505220000
Digital material Constantan foil for thermocouple
 
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
Material Chemical composition (%)
Ni Cr Si Mn Al
KP(Chromel) 90 10      
KN(Alumel) 97   3    
 
2. Physical properties and Mechnical properties
 
 
Material
 
 
Density(g/cm3)
 
Melting pointºC)
 
Tensile Strength
(Mpa)
 
Volume resistivity
(μΩ.cm)
 
Elongation rate (%)
KP(Chromel) 8.5 1427 >490 70.6(20ºC) >10
KN(Alumel) 8.6 1399 >390 29.4(20ºC) >15
 
 
3. EMF Value range at different temperature
Material EMF value Vs Pt(μV)
100ºC 200ºC 300ºC 400ºC 500ºC 600ºC
KP(Chromel) 2816~2896 5938~6018 9298~9378 12729~12821 16156~16266 19532~19676
KN(Alumel) 1218~1262 2140~2180 2849~2893 3600~3644 4403~4463 5271~5331

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