The tentacles of an octopus. The definition of a tentacle is a flexible arm used to touch and grab things, or the sensitive hairs on a plant leaf. An example of a tentacle is one of the eight arms of an octopus. tentacle.
Confidence votes 25. Steel often melts at around 1370 degrees C (2500 Â°F). This varies depending on the specific steel alloy. The specific heat of steel varied from 420J/KG/Deg C at room temperature to 720J/KG/Deg C at 1535 deg C. This equates to a theoretical heat requirement of approximately 375KWh/mt to melt steel from room temperature. In practice, foundries use between 500 and 800 KWh /mt to raise steel to a little above its melting point of 1535deg C.
Heat the lead until it melts. Turn on your heat source and adjust the heat to its highest setting, if applicable. Apply the heat as directly to the lead as possible. Lead melts at a temperature of 328 degrees Celsius (621 degrees Fahrenheit), so it will take time to melt a large amount of lead. Since most lead you use will not be pure, you will have impurities ('dross') float to the top.