NiCT-NiSi (Type K) thermocouple finds the widest use in all basemetal thermocouple, at temperature above 500C. The main chemical composition of positive leg NiCr (KP) is Ni≈90% and Cr≈10%: negative leg NiSi (KN) is Ni≈97% and Cr≈3%. The operating temperature range is -200-1300 C (for short term)
Products
NiCr-NiSi thermocouple wire(Type-K)
DETAIL
NiCT-NiSi (Type K) thermocouple finds the widest use in all basemetal thermocouple, at temperature above 500C. The main chemical composition of positive leg NiCr (KP) is Ni≈90% and Cr≈10%: negative leg NiSi (KN) is Ni≈97% and Cr≈3%. The operating temperature range is -200-1300 C (for short term) and 0-1100 C ( for long term).
TYPE AND MAIN CHENICAL COMPOSITION(%)
Type | Chemical composition% | ||||
Ni | Cr | Mn | Si | Al | |
NiCr KP | 90 | 10 | / | / | / |
NiSi KN | 97 | / | / | 3 | / |
Standard:IEC60584-1 | |||||
Type | EMF Versus Pt.67(mV) | ||||
100℃ | 200℃ | 400℃ | 600℃ | 800℃ | |
KP | 2.868-2.886 | 5.937-6.017 | 12.729-12.821 | 19.532-19.676 | 26.064-26.246 |
KN | 1.224-1.256 | 2.140-2.180 | 3.600-3.644 | 5.271-5.331 | 7.080-7.160 |
KP-KN | 4.050-4.187 | 8.077-8.197 | 16.329-16.465 | 24.803-25.007 | 33.144-33.46 |
Physical property | |||||
Type | Desinty at 20℃ | Melting point | Tensile Strength(Soft annealed condition in 20℃) | Elongation(Soft annealed condition in 20℃) | Resistivity at 20℃ |
KP | 8.6 | 1427 | ≥490 | ≥10 | 0.71 |
KN | 8.6 | 1360 | ≥390 | ≥15 | 0.3 |