The Fe-C phase diagram shows at a first glance the importance of carbon concentration for steels. Furthermore, sulfur, oxygen, nitrogen and hydrogen concentrations strongly determine mechanical properties of products made of carbon steel or alloy steel. Thus, chemical analysis of raw materials like pig iron, recycled steel and ferroalloys is indispensable. Combustion analysis by Elementar’s inductar series is the perfect tool to adjust the right elemental concentrations for superior steel properties. Accordingly, the inductar series supports both R&D and production in terms of higher efficiency and materials performance.