Quality	Standard	Material No.	Possible Surface Coating:
HC300B, HC300B+ZE	DIN EN 10268	1.0444	+ZE according to DIN EN 10152

Testing direction	Yield Point Re (MPa)	Tensil Strength Rm (MPa)	Elongation A80 (in %)	BH2 MPa
Q	300 – 360	390 – 480	≥ 26	35

HC300B is a cold-rolled micro-alloyed steel in accordance with the DIN EN 10268 standard that impresses with its outstanding properties and wide range of applications. It is characterized by unparalleled strength, good formability, weldability and bake-hardening properties and therefore offers a reliable and economical solution for extreme requirements in a wide range of industries.

Incomparable strength thanks to maximum tensile strength: With a minimum tensile strength of 300 MPa and a minimum elongation at break of 20%, HC300B significantly exceeds the strength values of comparable steels. This makes it the ideal choice for applications that have to withstand extreme loads, such as in building construction, civil engineering, mechanical engineering and vehicle construction.

Easy processing thanks to good formability: Despite its high strength, HC300B can be bent, drawn and punched without any problems. This enables simple and economical processing and the production of components with complex geometries. This allows designers to implement their ideas flexibly and efficiently.

Secure connections thanks to good weldability: HC300B is characterized by its good weldability. This makes it easy to join components securely and permanently, which further expands the range of applications for the material and ensures high reliability and durability of the structures.

Flexible adaptation thanks to bake-hardening properties: HC300B is a bake-hardening steel. This means that its strength and hardness can be further increased by heating and subsequent cooling (hardening process). This property makes it possible to adapt the material specifically to the requirements of the respective application and thus achieve optimum performance.

Special feature of bake-hardening steels (B)
Bake-hardening steels (B) are characterized by the possibility of further increasing their strength and hardness through heating and subsequent cooling (hardening process). This is achieved by converting martensite into bainite, a harder and tougher steel phase. The bake-hardening properties of HC300B make it an ideal material for applications that require maximum safety and resilience while offering a degree of flexibility in adapting to the specific requirements of the application.

Summary
HC300B is a robust and versatile cold-rolled micro-alloyed bake-hardening steel that offers a unique combination of unparalleled strength, formability, weldability and bake-hardening properties. It is the optimal choice for applications requiring maximum safety, strength and flexibility and offers a reliable and economical solution for

The cold-rolled micro-alloyed HC300B steel provides an excellent basis for a wide range of applications in the metalworking industry. A notable technical property of this steel is its ability to be electrolytically galvanized, which significantly expands its range of applications. Electrolytic galvanizing allows the HC300B steel to obtain a uniform zinc coating, which not only improves its corrosion resistance but also extends its service life. This process makes it possible to use the steel for applications where high resistance to corrosion and a long service life are required. Thus, the possibility of electrolytic galvanizing opens up new perspectives for the use of HC300B steel in various industries and applications.

Characteristic overlay factor	Nominal zinc coating per side Thickness µm	Nominal zinc coating per side Mass g/m²	Minimum value per side Thickness µm	Minimum value per page Mass g/m²
ZE25/25	2,5	18	1,7	12
ZE50/50	5,5	36	4,1	29
ZE75/75	7,5	54	6,6	47
ZE100/100	10,0	72	9,1	65

Code letters	Type of surface treatment
P	phosphated
PC	Phosphated and chemically treated
C	chemically passivated
PCO	Phosphated, chemically treated and oiled
CO	Chemically passivated and oiled
PO	Phosphated and oiled
O	oiled
S	sealed
U	galvanized, without surface treatment