440～780 N/mm2-grade Ferrite-Bainite Hot Rolled Steel Sheet

Its Excellent Stretch Frangeability in top level in the Industry.

1. Outline

This is the hot rolled high tensile strength steel sheet that has outstanding stretch frangeability and weldability, which was developed corresponding to the need to reduce the weight of various parts of machines including automobiles.

2. Characteristics

  • 1.Excellent formabilityworkability, especially in stretch frangeabilityflanging
  • 2.The softening in Heat-Affected Zone (HAZ) of the area influenced by welding heat is small, so high joiningcoupling strength is achievedobtained.
  • 3.It has excellent fatigue propertycharacteristics

Stretch Frangeability

Stretch Frangeability

We have developed double-punching technology to easily improve the stretch frangeability.
By using this technology in combination with steel sheets with high stretch flanging, very severe stretch frangeability is enabled.

Punching Process: Stretch Frangeability

Cases of Improving the Hole Expansion Ratio by Double-Punching Technology

Cases of Application to Practical Parts

3. Environmental Consideration

It improves the economy of vehicles by reducing the weight of the body, thereby contributing to the prevention of global warming
[Prevention of Global Warming: Material Contributing to Energy Saving] [Weight Reduction]

Contacts

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Iron & Steel Business Kobe Steel, Ltd.
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TEL: +81-92-451-6011 (Fukuoka)

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