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| Categories | Bare Thermocouple Wire |
|---|---|
| Brand Name: | OHMALLOY/OEM |
| Model Number: | SP-K-B |
| Certification: | ISO9001:2018 |
| Place of Origin: | China |
| MOQ: | 5KG |
| Payment Terms: | L/C, T/T, , MoneyGram,Paypal |
| Supply Ability: | 30 tons per month |
| Delivery Time: | 5-18 working days after payment confirmed |
| Packaging Details: | Coil+plywood case |
| Name: | K Type Thermocouple Bare Wire |
| Size: | 8AWG(3.2mm)/16AWG(1.29mm)/20AWG(0.8mm) |
| Shape: | Round Wire |
| Surface: | Bright |
| Accuracy: | Class 1 |
| Package: | Coil+plywood Case |
| Company Info. |
| Ohmalloy Material Co.,Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
Type K 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) | 95 | 1-2 | 0.5-1.5 | 1-1.5 | |
2. Physical properties and Mechnical properties
Material | Density (g/cm3) | Melting point℃) | Tensile Strength (Mpa) | Volume resistivity(μΩ.cm) | Elongation rate (%) | Diameter tolerance(mm) |
| KP(Chromel) | 8.5 | 1427 | >490 | 70.6(20℃) | >10 | +/- 0.02 |
| KN(Alumel) | 8.6 | 1399 | >390 | 29.4(20℃) | >15 | +/- 0.02 |
3. EMF Value range at different temperature
| Material | EMF value Vs Pt(μV) | |||||
| 100℃ | 200℃ | 300℃ | 400℃ | 500℃ | 600℃ | |
| 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) | ||||
| 700℃ | 800℃ | 900℃ | 1000℃ | 1100℃ |
| 22845~22999 | 26064~26246 | 29223~29411 | 32313~32525 | 35336~35548 |
| 6167~6247 | 7080~7160 | 7959~8059 | 8807~8907 | 9617~9737 |
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