Special steel
High strength steel and spring steel
PT strip is a spring steel within the group of special steels and has good spring properties in combination with good formability, without piece hardening of your springs. Sorbitex is another specialty steel that has very good spring properties and Rawael is another specialty steel that offers the possibility of very tight tolerances both in terms of mechanical properties and dimension.
PT band
PT stands for Pre Tempered and in practice means that the material has been given a bainitic structure through interstage hardening. The bainitic structure gives the material good formability and high strength at the same time.
Sorbitex
Sorbitex is a sorbitically hardened and textured spring steel with a rolling reduction of up to 90%. Used for return springs and band saws.
Rawael
With Rawael you get a high-strength, micro-alloyed strip steel with good formability and tight tolerances both in terms of dimension and mechanical properties. The material also has good weldability.
You can find material tables further down this page.
More about our specialty steels
PT band
PT strips have a clearly better formability for a given strength than the martensitic hardened materials. A martensitic hardened material has very limited formability and bendability. Therefore, the component has to be manufactured and shaped in the annealed/soft state and
the component is case hardened afterwards. With PT strip, which is a distinctly springy steel, you eliminate work hardening of your component with the possibility of significantly tighter dimensional tolerances. In addition, you will achieve a shorter lead time and less scrap with PT-Band. The yield strength of PT-Band can be selected between RM=900-1500 MPa.
Sorbitex
The material offers tensile strengths up to about 3000 MPa and is used
mainly for return springs for car belts, vacuum cleaner cables etc. The material is supplied with a ground surface and normally with rounded edges to maximize the fatigue properties. The performance of a return spring in Sorbitex exceeds the performance of martensitic hardened return springs. Used for e.g. return springs and band saws.
Rawael
Rawael material allows you to achieve very tight tolerances for the final product and good productivity as it has good formability combined with high strength. You can optimize your manufacturing process in a completely different way than with a material with larger variations. Thanks to its low carbon content, RAWAEL is also weldable. The yield strength can be selected between RM=700-1200 MPa.
