The deal is an extension of an arrangement that goes back to May 2000 and involves CSC providing the resource giant with consulting, applications development, systems integration, end user services and disaster recovery.

BlueScope Steel chief information officer, Andrew Baker, said in a statement that the company had been pleased with the relationship.

"The further cost saving initiatives and service delivery improvements we plan to deliver with CSC are important to us," he said. "This new contract recognises the benefit of working with CSC and we look forward to continuing our relationship."

In December, CSC with the Australian Electoral Commission (AEC) to provide mainframe and network communications services.

The contract runs until 2013 and is an extension of an existing arrangement, plus the implementation of a new disaster recovery system.