UltraLight Steel Auto Body - Final Report - American Iron & Steel ...

Tailored blank usage
Tailored blank: rear rail outer
(thickness in mm)
Careful placement of the seams in the tailored blank was critical
for minimizing weight and facilitating forming. This consideration
was especially important in the body side outer because of its
complexity, its size, its use of high strength steels and the
inclusion of a class A surface quarter panel.
Part Material grade Material
(yield strength) thickness
in MPa (mm)
rear rail inner and outer (r&l) Figures A & B 350 1.00 - 1.60
rail front outer (r&l) Figure C 350 1.50 - 2.00
rail front inner (r&l) Figure D 350 1.50 - 1.80
panel rocker inner (r&l) Figure E 350 1.30 - 1.70
panel skirt Figure F 140 1.60 - 2.00
panel wheelhouse outer (r&l) Figure G 140 - 210 0.65 - 0.80
panel body side outer (r&l) Figure H 210 - 280 - 350 0.70 - 1.70
Figure A Figure B
Tailored blank: rear rail inner
(thickness in mm)
ULSAB Final Report 17