CR210LA - Cold rolled micro-alloyed steel acc. VDA 239-100

Quality	Standard	Possible coatings	Alloy concept
CR210LA	VDA 239-100	UC, EG, GI, GA, AS, ZM	Non IF or IF

Quality

Testing direction	Yield Point R_e (MPa)	Tensil Strength R_m (MPa)	Elongation type 1 _A50 (in %)	Type 2 A₈₀ (in %)	Type 3 A₅₀ (in %)	r_0/20	_rm/20	_n10-20/Ag
L	210 – 300	310 – 410	≥ 30	≥ 29	≥ 31	≥ 1,0	≥ 1,1	≥ 0,15

Mechanical Properties

C %	Si %	Mn %	P %	S %	Al %	Ti %	Nb %	Cu %
≤ 0,10	≤ 0,50	≤ 1,00	≤ 0,080	≤ 0,030	≥ 0,015	≤ 0,15	≤ 0,10	≤ 0,20

Chemical properties

Cold-rolled micro-alloyed steel CR210LA according to VDA 239-100 is a high-strength, low-alloy steel specifically developed for applications requiring high strength combined with good formability. This type of steel has a minimum yield strength of 210 MPa in the longitudinal direction. CR210LA is offered in various surface qualities and coating types, including uncoated (for interior components) as well as galvanized and refined variants for different requirements. The micro-alloying with niobium, titanium, and vanadium enables a finer grain structure, thereby increasing strength without negatively affecting formability.

This steel is particularly well-suited for applications in the automotive industry, as well as in the construction and mechanical engineering industries. Its high-strength properties and good workability make it suitable for both interior components and certain exterior applications.

Properties

CR210LA stands out due to its excellent combination of high strength and good formability. The steel achieves its high strength through the addition of niobium, titanium, and vanadium, which create a micro-alloyed structure. These alloying elements promote grain refinement, thereby enabling a significant improvement in mechanical properties while maintaining good workability.

Key properties of CR210LA

Minimum yield strength of 210 MPa in the longitudinal direction.

Good formability despite high strength

Available uncoated or with surface treatments such as electrolytic galvanizing (EG) or hot-dip galvanizing (GI)

Surface quality: for interior components (“U” – Unexposed) and for exterior components (“E” – Exposed), depending on application and requirements

Galvanized variants offer additional corrosion protection through hot-dip refined (GI, GA) or aluminum-silicon coatings (AS)

For applications where the steel is used on exterior components, the surface treatment ensures that surface defects such as zinc blisters and micro-scales are minimized, preventing imperfections in subsequent paint finishes.

Applications

The CR210LA is particularly suitable for applications that require high strength and good workability during complex forming processes. Typical areas of application for this steel include:

Automotive Industry: Especially for interior components, such as reinforcement and structural profiles.

Galvanized variants (e.g., hot-dip galvanized or Galvannealed) are preferred for components requiring additional corrosion protection, especially for exterior applications like body parts.

Conclusion

The CR210LA is a high-strength, low-alloy steel that stands out particularly in demanding applications like the automotive and construction industries due to its high strength and good formability. With a minimum yield strength of 210 MPa, it offers an excellent combination of strength and workability, making it a preferred material for components that require high mechanical loads and good corrosion resistance.

Thanks to its diverse surface treatments—from electrolytic galvanizing to hot-dip galvanizing or Galvannealed—CR210LA can be optimally used for various applications, both interior and exterior. The workability is further improved by the careful selection of alloying elements and surface quality, making the steel an excellent choice for modern industrial applications.