Abstract The characteristics of metals are very important to know in order to get optimal utilisation. In this research, a system for measuring the heat propagation of various types of metals is developed. Measurements will be made using a number of LM35 sensors placed scattered on the metal to be tested. In this research, Arduino is used to read the data through ADC which then sends the data to the computer. The data is then processed simultaneously for several metal samples so that the heat propagation of each can be compared. The fixed parameters used in this research are the area of each plate and also the distance between the plates. Finally, the success of the method to measure the heat propagation of different metals is reported. Further results can be developed to identify different types of metals and their purity.