Rostami, part of Iran’s national weightlifting team, lifted 175kg overhead in the snatch, then broke the clean and jerk world record with a 220kg lift.
This performance meant that he also improved the overall world record by 1kg after lifting a total of 395kg.
The second spot was claimed by Russia, registering lifts of 168kg snatch and 205kg clean and jerk, with 373kg total.
The clean and jerk record at 85kg has stood since 1998, and was previously held by Zhang Yong of China, who lifted 218kg in 1998.