Wheel is made up of the rim and the disk. The main processing technique for rim is roll forming. Punch forming and spin forming are usually applied for disc. Punch forming is mainly used for disc of passenger cars, while disc of commercial cars are usually punch-formed (wigh inner tire) or spin-formed (without inner tire)

B700QZR steel mechanical properties

Remark : Test piece for tensile test taken to the rolling direction. Test piece for cold bend test taken transverse to the rolling direction.

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