Which of the following gases has the highest flame temperature when combined with oxygen?

MAPP gas, which stands for Methyl Acetylene-Propadiene Propane, is a mixture of gases that has a significantly higher flame temperature when combined with oxygen compared to the other options listed. When burned in an oxygen-rich environment, MAPP gas can reach flame temperatures around 3,730°F (2,050°C).

This high flame temperature makes MAPP gas especially effective for cutting and welding applications that require a hotter flame to achieve the necessary thermal energy for optimal cutting efficiency.

In contrast, natural gas, propylene, and propane, while useful as fuel gases for various applications, do not produce as high a flame temperature as MAPP gas when combined with oxygen. Their flame temperatures are generally lower, contributing to less efficient cutting when high temperatures are necessary. This characteristic of MAPP gas makes it a preferred choice in situations where maximum heat output is essential.