High Strength Steel Tubes
for Automotive Suspension Parts
—High Strength Steel Tubes with Excellent
Formability and Forming Technology for Light
Weight Automobiles—
TOYODA Shunsuke SUZUKI Koji SATO Akio
Abstract
JFE Steel has
developed two kinds of 780MPa class steel
tubes for automotive suspension parts. They
have excellent formability, fatigue endurance,
toughness and paintability. In addition to
the material development, tube forming and
its evaluation techniques are also important
for applying high strength steel tubes to
actual parts. The effects of forming conditions
and mechanical properties on formability in
bending, nosing and hydroforming are also
discussed.
