Quality	Standard	Material No.	Possible Surface Coating:
HC220B, HC220B+ZE	DIN EN 10268	1.0396	+ZE according to DIN EN 10152

Testing direction	Yield Point Re (MPa)	Tensil Strength Rm (MPa)	Elongation A80 (in %)	BH2 MPa	Vertical anisotropy r-value	Solidification exponent n-value
Q	220 – 270	320 – 400	≥ 32	35	≥ 1,5	≥ 0,16

HC220B is a cold-rolled micro-alloyed steel in accordance with the DIN EN 10268 standard, which impresses with its outstanding properties and wide range of applications. It is characterized by particularly high strength, good formability and weldability and therefore offers a reliable and economical solution for demanding applications in a wide range of industries.

Features of HC220B

High tensile strength: With a minimum tensile strength of 320-400 MPa and a minimum elongation at break of 32%, HC220B significantly exceeds the strength values of comparable steels. This makes it the ideal choice for applications that have to withstand certain loads, such as in vehicle construction.
Easy processing thanks to good formability: Despite its high strength, HC220B can be bent, drawn and punched without any problems. This enables simple and economical processing and the production of components with complex geometries. Designers can thus implement their ideas flexibly and efficiently.
Secure connections thanks to good weldability: HC220B 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: HC220B is a bake-hardening steel. This means that its strength and hardness can be further increased by heating and then 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.

Differences between HC180B and HC220B
Compared to HC180B, HC220B offers higher strength combined with good formability and weldability. This makes HC220B the ideal choice for applications requiring higher load-bearing capacity.

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 HC220B make it an ideal material for applications that require high strength and rigidity combined with good formability.

Summary
HC220B is a tough and versatile cold-rolled micro-alloyed steel with bake-hardening properties that offers a unique combination of strength, good formability, weldability and bake-hardening properties. It is the optimal choice for applications that require a certain level of safety and resilience.

The cold-rolled micro-alloyed HC220B steel opens up a wide range of possible applications in the metalworking industry. A particularly interesting property of this steel is its ability to be electrolytically galvanized, which significantly increases its attractiveness and functionality in various areas of application. The possibility of electrolytic galvanizing allows HC220B steel not only to improve its mechanical properties, but also to increase its corrosion resistance. This property opens the door to a wide range of applications where both strength and protection against corrosion are required.

A coated variant could be named as follows, for example:
HC220B+ZE75/75AO

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