LONDON, April 19 (Reuters) – Novelis Corp, the world’s biggest producer of rolled aluminium products, said it will no longer purchase metal produced by Russia’s Rusal to comply with U.S. sanctions. Novelis said in an email to Reuters late on Wednesday that it had flexibility as the world’s largest buyer of aluminium, reducing its dependence on metal from United Company Rusal. “Accordingly, we are confident that the risk for any material disruption in production will be low,” it added. Novelis is a subsidiary of India’s Hindalco Industries Ltd  part of the Aditya Birla Group.