Shanghai Tankii Alloy Material Co.,Ltd
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IEC Standard 7 16 Strands Cable DIN 250 Bobbin Thermocouple Stranded Wire/ Cable
NiCr-NiSi (Type K) thermocouple bare wire
NiCr NiSi (Type K) thermocouple bare wire finds the widest use in all base metal thermocouple, at temperature above 500°C.The main chemical composition of positive leg NiCr (KP) are Ni≈90% and Cr≈10%; negative leg NiSi (KN) are Ni≈97% and Cr≈3%. The operating temperature range is -200~1300°C(for short term) and 0~1100°C( for long term).
Type K thermocouple bare wire has strong resistance to oxidation than other base metal thermocouple bare wire. It has high EMF against Platinum 67, excellent temperature accuracy, sensitivity and stability, with a low cost. It is recommended for oxidizing or inert atmospheres, but cannot be used directly in the following cases:
(1) Alternatively oxidizing and reducing atmosphere,
(2) Atmosphere with sulphur gases
(3) Long time in vacuum
(4) Low oxidizing atmosphere such as hydrogen and carbon monoxide atmosphere
Fundamental Parameter:
| Grade | IEC | ASTM | DIN | GOST |
| K | Cromel-Alumel | Cromel-Alumel | Cromel-Alumel | Cromel-Alumel |
| N | Nicrosil-Nisil | Nicrosil-Nisil | Nicrosil-Nisil | Nicrosil-Nisil |
| E | Cromel-Constantan | Cromel-Constantan | Cromel-Constantan | Cromel-Constantan |
| J | Iron-Constantan | Iron-Constantan | Iron-Constantan | Iron-Constantan |
| T | Copper-Constantan | Copper-Constantan | Copper-Constantan | Copper-Constantan |
| B | PtRh30-PtRh6 | PtRh30-PtRh6 | PtRh30-PtRh6 | PtRh30-PtRh6 |
| R | PtRh13-Pt | PtRh13-Pt | PtRh13-Pt | PtRh13-Pt |
| S | PtRh10-Pt | PtRh10-Pt | PtRh10-Pt | PtRh10-Pt |
| RC/SC | Cu-CuNi (Copper-Coppernickel) | Cu-CuNi (Copper-Coppernickel) | Cu-CuNi (Copper-Coppernickel) | Cu-CuNi (Copper-Coppernickel) |
| KX | Cromel-Alumel | Cromel-Alumel | Cromel-Alumel | Cromel-Alumel |
| NX | Nicrosil-Nisil | Nicrosil-Nisil | Nicrosil-Nisil | Nicrosil-Nisil |
| EX | Cromel-Constantan | Cromel-Constantan | Cromel-Constantan | Cromel-Constantan |
| JX | Iron-Constantan | Iron-Constantan | Iron-Constantan | Iron-Constantan |
| TX | Copper-Constantan | Copper-Constantan | Copper-Constantan | Copper-Constantan |
