Steel exports from Japan are being adversely affected by excessive concern overseas about radiation leaks from the Fukushima No. 1 nuclear power plant, a steel industry leader said Tuesday.

There are cases in which importers refuse to accept steel products or scraps from Japan if radiation levels on them are found "even slightly higher" than usual, Eiji Hayashida, chairman of the Japan Iron and Steel Federation, told a news conference.

Hayashida stressed the federation will step up efforts to make importers understand that steel products from Japan have no radiation problems.