Strenght plates DOMEX (QSTE..., S...MC), DOCOL

PDF brochure DOMEX - stronger steel for stronger customer
PDF brochure QSTE
PDF brochure DOMEX


Data sheet DOMEX:
  • DOMEX 420 MC
  • DOMEX 460 MC
  • DOMEX 500 MC
  • DOMEX 550 MC
  • DOMEX 600 MC
  • DOMEX 650 MC
  • DOMEX 700 MC
  • DOMEX 960
  • DOMEX 1200


    • QStE.. is identification of hot-rolled sheet steel.
    QStE... high strenght steels are low-alloy cold forming steels intended for the enginnering and automotive industries. The entire range extends from QStE... cold-forming steels to wear-resistant or corrosion resistant steels, as well as ballistic protection sheet steel and electrical sheet steel.

    This brochure describes the range and characteristics of QStE... hot-rolled sheet steel. It is a general overview to assist in the selection of the right QStE... steel for your particular product.

    QStE... HOT-ROLLED SHEET STEEL

    High strenght steels

    QStE... is identification of hot-rolled products and is available as high strenght and extra-high strenght cold-forming steels.
    QStE... high strenght cold-forming steels are modern structural steels. QStE... steels have been used for many years in the engineering industry and have been under continual development.
    QStE... is a range of high strenght cold-forming steels distinguished by high strenght, excellent formability and good weldability, which makes them suitable for a wide range of applications.
    Materials marked QStE... plus a numeric code identifying intermediate yield, correspond to materials S ... MC. (e.g. QSTE 690 TM = S 650 MC = DOMEX 650 MC = RAEX OPTIM 650 MC = PAS 650 MC according to the EN standard.)

    QStE... HIGH STRENGHT COLD-FORMING STEELS


    QStE...

    All QStE... high strenght cold-forming steels are produced in modern plants under strict process control.
    The steels are micro-alloyed with niobium, titanium and vanadium, which enables low carbon and manganese contents to be maintained. The steels are produced by metallurgical processes that ensure very high purity of the steels, and they are then finished in a carefully controlled thermomechanical rolling process that ensures consistend properties:

      QStE... high strenght cold-forming steels are characterised by:
    • Excellend formability in relation to their high strenght.
    • Good weldability due to their low contents of alloying elements.
    • Good impact strenght at low temperatues, which should be specified at the time or ordering.
    • Suitable for laser cutting.
    • Suitable for hot-dip galvanising due to their appropriately formulated chemical composition. The order should specify that the steel will be hot-dip galvanised

    QStE... steels are available in the strenght levels shown in the figure below.

    Steel grades and mechanical properties

    QStE... high strenght steels are modern low-alloy structural steels for cold forming.
    QStE... is available in nine steel grades, with grade designations corresponding to the minimum yield strenght in the direction of rolling, ranging from 315 N/mm2. QStE... meets the requirements of the EN 10149-2 standard, and is also guaranteed to allow for thigher minimum bending radii.
    QStE... has a high yield strenght*tensile strenght relationship. The steel has high internal purity and can be bent both along and across the direction of rolling, with the minimum radii shown in the table. The mechanical propertis in the table are guaranteed in the directions of rolling.

    Impact strenght

    QStE... cold-forming steels have high impact strehgnt. The test temperatues and the energy levels that can be guaranteed are shown in the table.

     



    The bending guarantee is for a 90° bend in practical application.
    1) In case the thickness is > 8 mm, the yield strength values may be reduced by 20 MPa


      



    The sum of Nb, V and Ti is 0,22 % max. and B is 0,005 % max.
    If the material is to be hot-dip galvanized with a thin or thick coat of zinc, this must be specified in the order. For a thick zinc coat, Si is 0,3 % max.