In the application of spectrometers, "iron-based" refers to metal materials or alloys with iron as the base component (usually with the highest proportion of iron content), and they are among the common objects of metal composition analysis by spectrometers.

When a spectrometer detects iron-based materials, the core is to confirm the content of the iron matrix, while analyzing the concentrations of impurity elements such as carbon, sulfur, and phosphorus, as well as alloying elements such as chromium and nickel, so as to determine whether the materials meet the corresponding standards.

For example, for castings and forgings, spectrometers can confirm whether their compositions meet the standards through non-destructive testing, avoiding material mixing.