Which gas is typically used in conjunction with oxygen in oxyfuel cutting?

In oxyfuel cutting, acetylene is the most commonly used gas in conjunction with oxygen because of its ability to produce a high-temperature flame that is suitable for cutting various metals. Acetylene burns at a temperature of around 3,500 degrees Celsius (6,332 degrees Fahrenheit) when mixed with oxygen, making it one of the hottest fuel gases. This high flame temperature enables it to melt and cut through steel and other metals efficiently, facilitating the cutting process.

Additionally, acetylene is easily available and can be stored in a stable manner under pressure, which adds to its usability in welding and cutting applications. Its combustion properties also create an intense and focused flame, which is ideal for precision cutting.

While other gases, such as propane and natural gas, can also be used for cutting, they do not reach the same temperatures as acetylene when mixed with oxygen, thus they may not be suitable for all types of metal cutting. Hydrogen can be used but is less common, primarily due to safety concerns and the specific applications where it might be appropriate.