ULTRA-HIGH STRENGTH STEEL FOR STRONGER STRUCTURES

SSAB Tunnplåt launches Domex 1200, with a minimum yield strength of 1200 MPa that sets a new standard for ultra-high strength structural steels from strip. The new steel has been developed for use in slender structures that must be capable of withstanding very high stresses.

"The outer ends of crane booms and the top profiles of dumper truck bodies are a couple of typical examples for which Domex 1200 is very well suited," says Berit Arvidsson, Product Manager for Domex at SSAB Tunnplåt. "We have tested the steel together with some of our customers during the development process, and we are now building up a knowledge bank for the new steel. We have begun studies for various applications and we expect to be able to offer support to our customers in the form of knowledge, service and support, to enable them to draw maximum benefit from this steel in their products."

In addition to the high strength, a further characteristic of Domex 1200 is its good surface finish. "The surface has low topography, which means that it is very smooth," continues Arvidsson. "The benefit is that it is easier to achieve good painting results, and that the surface friction is low, which is beneficial in telescopic cranes."

The steel also has good machining properties, and is well suited for bending and welding. In spite of the high strength, the steel can be bent to tight radii.

"The material has a low content of alloying elements, is very pure, and is produced in a meticulously controlled process," Arvidsson explains about the properties of the steel. Domex 1200 is available in a strip width of 1500 mm and in thicknesses of between 4 and 8 mm. SSAB has produced a wide range of test sheets that can be ordered in various fixed lengths of between 3 and 12 m.

www.ssabusa.com