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  • Making steel more sustainable

Solutions for tomorrow, today

The world’s population currently stands at around 7 billion people. To meet their minimum expectations for a comfortable life, we already need the equivalent of 1.9 planet Earths. By 2050, when the global population is expected to top 9 billion, we will require the resources of at least three Earths to meet their needs.

This is a challenging statistic for the global steel industry. Today, an integrated mill producing four million tonnes of steel a year consumes the same energy as a town of a million people.

Of all the materials used by mankind, steel is already one of the most cost-effective, recyclable and environmentally efficient. Over the entire lifecycle of a steel application, benchmark emissions are extremely low compared to other materials. Steel products are also affordable.

This edition of Update features some of the recent products developed by ArcelorMittal that exploit the advantages of steel. For example, S-in motion has already identified UHSS and AHSS solutions that can be deployed in today’s vehicles. The catalogue of S-in motion solutions can be used to lighten vehicle weight while maintaining safety standards for occupants. A life cycle analysis (LCA) study of the S-in motion catalogue (see pages 6-7) confi rms that steel is the right choice for vehicles if the entire life cycle is taken into account.

In the construction sector, ArcelorMittal has recently announced its Nature range of organic coated steels (see pages 4-5). The innovative roofi ng and cladding solutions (sometimes including photovoltaic elements) will help to reduce energy consumption in buildings and create a beautiful built environment that is both sustainable and healthy for its users.

The use of steel in energy applications is also increasing. In renewable energy generation, ArcelorMittal has developed new electrical steels for wind turbines which maximise the amount of power generated. New grades have also been developed for use in thermal power plants. Their resistance to high temperature and pressure enables steam turbines to function more efficiently.

Meeting the needs of future generations requires us to use resources more effi ciently, and to fi nd new solutions to old problems. As you will have seen in this issue of Update, steel and ArcelorMittal are uniquely positioned to be an important part of those solutions.

From waste to energy: transporting granulated slag directly from the blast furnace to the cement mill ensures lower CO2 emissions and high-quality cement.

As well as improving our steel products and solutions, ArcelorMittal is working hard to improve our processes. Our aim is to reduce our environmental impact even further. More information on our process improvements will feature in the next edition of Update.

Source: Update client magazine - November 2011