CR300LA - Cold-Rolled Micro-Alloyed Steel according to VDA 239-100

Quality	Standard	Possible coatings
CR300LA	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	300 – 380	380 – 490	≥ 24	≥ 23	≥ 25	≥ 0,12

Mechanical Properties

C %	Si %	Mn %	P %	S %	Al %	Ti %	Nb %	Cu %
≤ 0,12	≤ 0,50	≤ 1,40	≤ 0,030	≤ 0,025	≥ 0,015	≤ 0,15	≤ 0,09	≤ 0,20

Chemical properties

The CR300LA is a cold-rolled, high-strength, low-alloy steel with a minimum yield strength of 300 MPa. This grade is characterized by its high strength and good formability. Through alloying with niobium, titanium, and vanadium, the mechanical strength of the material is significantly improved, making it an excellent choice for components that must meet high mechanical demands.

Properties

Minimum yield strength of 300 MPa in the longitudinal direction.

Increased strength with good formability.

Micro-alloying with niobium, titanium, and vanadium.

Option for coating with electrolytic galvanizing (EG) or hot-dip galvanizing (GI).

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

Applications

The CR300LA is particularly suitable for:

Safety-Relevant Components: Due to its high strength and good formability, CR300LA is used in the manufacturing of safety-relevant body parts such as longitudinal members, B-pillars, and bumper beams. These components must absorb significant energy in the event of a crash to protect occupants.

Weight Optimization: Due to CR300LA’s high strength, material thickness can be reduced without compromising stability. This enables significant weight reduction in the vehicle body, which in turn contributes to lower fuel consumption and reduced emissions.

Structural Parts with Complex Geometry: The excellent cold formability of CR300LA allows for the production of complex-shaped structural parts. This is particularly advantageous for integration into modern vehicle architectures, where design and functionality are closely intertwined.

Conclusion

In summary, CR300LA according to VDA 239-100 is an advanced cold-rolled steel specifically developed for the demanding requirements of the automotive industry. The precisely controlled chemical composition, especially the low carbon content, is the key to its outstanding weldability and formability. In combination with impressive mechanical values—high tensile strength and yield strength, along with good elongation—CR300LA offers an optimal balance between strength and formability. These properties make it an ideal material for producing weight-optimized, safety-relevant, and complex-shaped body parts that meet modern requirements for crash safety, efficiency, and design.