Application of High-Strength Steel Sheets for Automotive Wheels 850540

Forming and welding considerations to be taken into account when automotive wheels are to be made from high-strength steel sheets, and limits to the gage reduction that can be achieved by the use of high-strength steels are described. Dynamic deflection is proposed as an index of wheel durability. It is made clear that the fatigue life Nf of wheels can be expressed by Nf ∝σB ×td 2.58 ∼ 3.83 (σB and td are the tensile strength and thickness of the disc steel, respectively) and that dual-phase steels offer excellent durability for strength.


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