Ohmalloy Material Co.,Ltd
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K-CA-522 Type K Thermocouple Cable 30AWG FEP / PVC Coated Fiberglass Jacket
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 temperature.
1. Product Details
1. Chemical Composition
| Material | Chemical composition (%) | ||||
| Ni | Cr | Si | Mn | Al | |
| KP(Chromel) | 90 | 10 | |||
| KN(Alumel) | 95 | 1-2 | 0.5-1.5 | 1-1.5 | |
2. Physical Properties and Mechnical Properties
Material |
Density(g/cm3) |
Melting pointºC) |
Tensile Strength(Mpa) |
Volume resistivity(μΩ.cm) |
Elongation rate (%) |
| KP(Chromel) | 8.5 | 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 |
| EMF value Vs Pt(μV) | ||||
| 700ºC | 800ºC | 900ºC | 1000ºC | 1100ºC |
| 22845~22999 | 26064~26246 | 29223~29411 | 32313~32525 | 35336~35548 |
| 6167~6247 | 7080~7160 | 7959~8059 | 8807~8907 | 9617~9737 |