Quality	Standard	Material No.	Possible type of hot-dip coating
HDT450F	DIN EN 10338	1.0961
HDT450F	DIN EN 10346	1.0961	+Z, +ZF, +ZM

Testing direction	Yield point Rp0,2 (MPa)	Tensil Strength Rm (MPa)	Elongation A80 (in %)	A5 (in %) ≥ 3 mm
L	300 – 420	≥ 450	≥ 24	≥ 27

HCT450F is a hot-rolled ferritic-bainitic steel specified in accordance with the DIN EN 10338 and DIN EN 10346 standards. This type of steel is characterized by its unique combination of strength and ductility, which makes it particularly suitable for demanding industrial applications such as automotive engineering. The special microstructure of HCT450F, which includes both ferrite and bainite, gives it excellent mechanical properties, which are crucial in modern manufacturing processes.

HCT450F offers a number of advantages that set it apart from other steels. The high strength of the material is achieved by the bainite phase, while the ferrite phase provides the necessary ductility. This combination enables the steel to withstand both high loads and complex forming processes without cracking or breaking. In addition, HCT450F has good weldability, which facilitates processing and assembly.

Thanks to its excellent mechanical properties, HCT450F is frequently used in the automotive industry, particularly for structural components that require both high strength and good crash properties. In addition, this steel is used in the construction industry, in mechanical engineering and in the manufacture of safety components, where reliability and performance are crucial.

In addition to the hot-rolled version, HCT450F is also available in a continuously hot-dip coated version, which is specified in accordance with the DIN EN 10346 standard. This variant offers additional corrosion protection and improves the surface quality of the steel. The hot-dip process applies an even layer of zinc, which protects the steel from environmental influences and extends its service life.

A ferritic-bainitic steel, such as HCT450F, contains bainite or hardened bainite in a matrix of ferrite or hardened ferrite. This microstructure is crucial for the steel’s outstanding properties. Bainite contributes to the high strength, while ferrite ensures the necessary ductility and formability. This combination makes it possible to use HCT450F in a wide range of applications where both mechanical performance and formability are required.

This class of steel is characterized by a multiphase structure, which makes a decisive contribution to the performance of the material. Ferrite, the softer component, ensures excellent formability and ductility. Bainite, a harder phase, gives the steel the necessary strength and hardness. In HCT450F, this combination is optimally balanced to enable both high loads and complex forming processes. The hardened bainite in the ferrite matrix offers a good balance between strength and toughness, which makes this steel particularly attractive for safety-relevant applications.

Compared to other steel grades, such as HCT780X, HCT450F offers lower strength but higher formability and ductility. While HCT780X is used for extremely stressed structural components, HCT450F is better suited to components that require good formability combined with sufficient strength. Compared to HCT600C, a complex-phase steel, HCT450F has a simpler microstructure that still offers excellent mechanical properties.

HCT450F is a versatile and high performance hot rolled ferritic-bainitic steel specified to DIN EN 10338 and DIN EN 10346 standards. Its special microstructure gives it an ideal combination of strength and ductility, making it ideal for a wide range of industrial applications. The continuously hot-dip coated variant offers additional corrosion protection and makes this steel even more versatile. Whether in automotive engineering, mechanical engineering or the construction industry – HCT450F impresses with its outstanding properties and reliability.