We primarily manufacture soft and unalloyed materials such as our DC-grade and case-hardening steel in non-earing or low-earing versions. With a thickness ranging from 0.1 to 6 mm and a width ranging from 10 to 1,000 mm, this NE strip (non-earing strip) can be used for a wide range of applications. In contrast to conventional cold rolled strip steel, NE strip has an extremely fine, isotropic grain structure and thus exhibits uniform flow behavior both longitudinally and transversely to the direction of rolling. The result is a material with an extremely low level of earing of approx. 0.5% which does not exhibit any internal stresses (see diagram “Influence of microstructure on earing”). As such, our NE strip grades are the perfect material for complex, multi-stage forming operations. They are used, for example, in the production of guide sleeves for dual clutch transmissions or tension and idler pulleys for belt drives in automotive applications.
In addition to the microstructure, the material surface also has a major influence on the deep drawability of a material. This is why we offer our low-earing and non-earing grades with a variety of surface finishes such as rough, matt, smooth, or glossy in accordance with DIN EN 10139. A notable surface finish in this context is a coating of zinc phosphate – the combination of a carrier layer and soap lubricant enables even more complex forming processes for particularly demanding deep-drawing applications.