CR270LA - Cold-Rolled Micro-Alloyed Steel according to VDA 239-100

Quality	Standard	Possible coatings
CR270LA	VDA 239-100	UC, EG, GI, GA, AS, ZM

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 %)	_n10-20/Ag
L	270 – 350	350 – 460	≥ 26	≥ 25	≥ 27	≥ 0,13

Mechanical Properties

C %	Si %	Mn %	P %	S %	Al %	Ti %	Nb %	Cu %
≤ 0,12	≤ 0,50	≤ 1,00	≤ 0,030	≤ 0,025	≥ 0,015	≤ 0,15	≤ 0,09	≤ 0,20

Chemical properties

The CR270LA is a cold-rolled, high-strength, low-alloy steel with a minimum yield strength of 270 MPa. Thanks to its special micro-alloying with niobium, titanium, and vanadium, this steel offers an excellent combination of high strength and good formability. This makes it an ideal choice for various applications in the automotive and mechanical engineering industries.

Properties

Minimum yield strength of 270 MPa in the longitudinal direction.

Increased strength with good formability.

Micro-alloying with niobium, titanium, and vanadium.

Surface quality for interior components (U) or exterior components (E).

Possibility of coating with electrolytic galvanizing (EG) or hot-dip galvanizing (GI).

Applications

Safety-Relevant Reinforcement Components: Due to its higher strength compared to CR240LA, CR270LA is suitable for reinforcements in the body structure that require greater energy absorption and stiffness in a crash, for example, certain areas of the A and B-pillars, roof frames, or cross members.

More Complex Chassis Components: CR270LA can be used for certain chassis components that require both precise forming and high load-bearing capacity and rigidity.

Seat Frames and Seat Fittings with Higher Requirements: Where a lighter construction combined with increased strength is desired for the seat structure or adjustment mechanisms, CR270LA can be a suitable choice to save weight and enhance stability.

Door Assemblies and Tailgate Structures: For specific areas in door and tailgate structures that require both formability for geometry and increased strength for safety and rigidity.

Conclusion

With its minimum yield strength of 270 MPa, the CR270LA offers an excellent combination of strength and good formability, which predestines it for demanding applications in the automotive industry, mechanical engineering, and construction industry.