Special Steel Sheet

SUPERHOT

JFE produces high quality hot rolled special steel SUPERHOT, which is characterized by excellent thickness accuracy, surface quality, and workability in comparison with conventional hot rolled special steels, by applying an advanced hot rolling mill, proprietary technologies, and strict controls. SUPERHOT is widely used in items which cannot be substituted with cold rolled products, such as chain plates, seat belt tongues, recliner gears, and pole parking.

Characteristics

  • Excellent accuracy of thickness
    Longitudinal thickness deviation is extremely small and the crown is also fl at. Actual measured data of thickness deviation and profi le is shown.
  • Excellent quality thick sheet
    Descaling at the coil form of the strip more than 9mm is possible.
  • Excellent surface quality
    Red scale is controlled in minimum. The example is shown below.
  • Excellent workability
    It is suitable to fi ne blanking, tough standing and slight curvature bending.

Example of thickness measurement of
3.2mm × 930mm (S55C)

Example of thickness measurement

Comparison of surface between
SUPERHOT and Conventional one

Conventional one SUPERHOT
Conventional one SUPERHOT

Standard

Excellent thickness accuracy product and excellent surface quality products are applicable to all standards.
  Excellent quality thick sheet and excellent workability products are mainly applicable to SC, SCM and SCr.

Application

Parts of reclining seat

Gear plate Gear plate
Lock gear Lock gear