Kobe Steel's logo at the group's headquarters in Tokyo, Japan October 10, 2017. Reuters/Issei Kato

Kobe Steel Ltd shares tumbled a further 16% on Wednesday after it admitted it may have fabricated data on iron powder products and media reported the possible sale of its real estate business.

The latest disclosure comes after Japan’s No.3 steelmaker said on the weekend it had falsified data to show that its aluminum and copper products had met customer specifications, and suggests the problems could be widespread.

Japanese manufacturers were thrown into turmoil by the revelation, with implications for materials used in cars, aircraft and possibly a space rocket and defence equipment.

Shares in Kobe Steel fell 22% the previous day.

A Kobe Steel spokesman confirmed a report on Wednesday in the Yomiuri newspaper saying the firm may have fabricated data on iron powder products used in components such as automotive gears. He said the company was investigating the issue.

The Nikkei business daily meanwhile reported that Kobe Steel intended to put its real estate business on the block in an effort to shore up already shaky finances now threatened by the data falsification scandal.

The Kobe Steel spokesman said he could not comment on that report.

Kobe’s data fabrication problems are the latest in a series of industrial missteps undermining Japan’s reputation for high-quality production.

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