One of the most commonly used thermocouples is the Chromel-Alumel or Type K Thermocouple. It has a wide measurement range (-100 to + 1370 °C), a large electromotive force (41310 µV at 1000 °C with the cold junction at 0°C) and a curve which can be easily linearised to give accuracies better than 0.2% over the entire measurement range. The type K thermocouple is made of Alumel: an alloy comprising 95% nickel, 2% aluminium, 2% manganese and 1% silicon and Chromel an alloy comprising 80% nickel and 20% chromium.