Quality	Standard	Material No.	Old designation
S650MC	DIN EN 10149-2	1.8976	QStE650TM

Testing direction	Yield strength Rp0.2 (MPa) min.	Tensile strength Rm (MPa)	Elongation A80 (in %) min < 3 mm	Elongation A80 (in %) min > 3 mm
L	≥ 650	700-880	10	12

Hot rolled micro-alloyed steel S650MC, manufactured in accordance with DIN EN 10149-2, is a state-of-the-art material developed for demanding applications in the automotive and mechanical engineering industries. This steel offers an exceptional combination of high strength and good formability, making it ideal for components that require both structural integrity and precise forming. The optimization of the micro-alloying elements and the targeted heat treatment make it possible to achieve a high yield strength while maintaining controlled formability.

S650MC, also known as material no. 1.8976, is characterized by its superior mechanical performance. The old designation QStE650TM is still known among experts, although the current nomenclature S650MC enables a clear classification of the properties and areas of application. The steel achieves a yield strength of around 650 MPa in the quenched and tempered state, which makes it ideal for highly stressed components. At the same time, it offers excellent weldability and machinability, ensuring efficient integration into modern production processes.

S650MC is manufactured under strictly controlled process parameters that ensure a homogeneous microstructure. State-of-the-art rolling technologies and precise heat treatment processes are used to achieve a fine-grained microstructure that ensures an optimum combination of strength and ductility. These properties make S650MC a preferred material for the production of vehicle bodies, load-bearing structural components and other highly stressed components where both safety and durability are of key importance.

In addition, the high microalloy quality enables excellent adaptation to specific requirements. For example, targeted process adjustments can be made to optimize both strength and formability to meet the diverse needs of modern industries. With its robust performance and ability to withstand high mechanical loads, S650MC is a key material for innovative and safe designs.

Overall, the hot-rolled micro-alloyed steel S650MC – based on DIN EN 10149-2 – offers an excellent material solution that meets the increasing requirements for strength, formability and workability in modern industry. Customers benefit from a reliable, high-quality material that can be used flexibly in numerous applications.