What is the hottest part of a flame?

The hottest part of a flame is known as the inner cone or the primary combustion zone. This region of intense heat is located just above the yellowish-orange tip of a typical flame. It is characterized by a blue color and possesses the highest temperature within the flame.

The high temperature in this area is a result of the complete combustion of gases in the presence of enough oxygen. It occurs due to the specific chemical reactions happening in the flame. The outermost part of the flame, called the oxidizing zone or secondary combustion zone, has a lower temperature since it has less access to oxygen.

The temperature in the hottest part of a flame can reach around 1,300 to 1,800 degrees Celsius (2,400 to 3,300 degrees Fahrenheit) depending on the fuel being burned and the conditions of the combustion process. This extreme heat can be utilized for various purposes, such as welding, metalworking, and melting substances efficiently.