Quality	Standard	Possible coatings	Alloy concept
CR3	VDA 239-100	UC, EG, GI, GA, AS, ZM	Non IF or IF

Testing direction	Yield Point Re (MPa)	Tensil Strength Rm (MPa)	Elongation type 1 A50 (in %)	Type 2 A80 (in %)	Type 3 A50 (in %)	r 90/20	rm/20	n10-20/Ag
Q	140 – 210	270 – 350	≥ 39	≥ 38	≥ 41	≥ 1,8	≥ 1,5	≥ 0,18

CR3, also known as special deep-drawing grade, is a cold-rolled steel that has been specially developed for more demanding deep-drawing applications and formed parts with complex geometries. The VDA 239-100 standard defines the technical requirements and properties of this material, which is characterized by outstanding forming properties and excellent surface quality.

Properties and material composition
CR3 is an unalloyed quality steel that is given a fine-grained structure through controlled rolling and annealing technology. This microstructure gives the steel its exceptional formability. The most important properties include

In addition, CR3 is optimized according to the requirements by a special chemical composition which, among other things, has a very low carbon content to prevent signs of ageing.

Areas of application
CR3 is mainly used in the automotive and electrical industries, where a combination of high formability and perfect surface quality is required. Typical application examples are

Advantages compared to other grades
CR3 offers higher strength and formability compared to other deep-drawing grades such as CR1 or CR2. This makes it particularly suitable for components that have to meet both high aesthetic and mechanical requirements. At the same time, its good weldability allows easy integration into larger assemblies.

Conclusion
CR3 (special deep-drawing grade) is an indispensable material for applications where the highest demands are placed on formability, dimensional accuracy and surface quality. In accordance with the VDA 239-100 standard, this steel meets all the criteria for demanding deep-drawing applications and is particularly suitable for components with complex geometries. Its versatility and reliability make it one of the preferred materials in modern production technology.