The most actively traded rebar on the Shanghai Futures Exchange closed down 0.2 percent at 3,933 yuan ($566) a tonne, and lost 2.9 percent for the week.
Aluminium is a metal key for the transport and packaging industries but at current prices about 40% of the world's aluminium production is losing money.
The miner suspended its rail operations after the incident that wrecked track and left a locomotive and wagons upturned nearly 120 km south of Port Hedland.
Queensland state is set to unveil proposed resource regulations that will require miners to pay into an "insurance fund" for the remediation of old mines.