Gas hot extraction
In some cases, it is not the content of the desired alloying elements that is decisive for the steel quality, but rather that of the undesirable steel companions.
Smallest concentration analyzed
Gas hot extraction analysis is a reliable method for determining the elements in ferrous and non-ferrous metals with the highest accuracy and reproducibility in minute concentrations. Similar to nitrogen, which can also occur as a desired alloying component, hydrogen and oxygen lead to pronounced embrittlement of the steel even in the smallest quantities. Due to these outstanding properties, gas hot extraction analysis is used in research and development as well as in quality control. The measuring ranges are 1 to 250ppm for hydrogen, 50ppm to 0.2 wt.% for oxygen and 50ppm to 3 wt.% for nitrogen.