voestalpine Metsec plc

Environmental Impacts of Steel

Fossil Fuel Depletion

For the manufacturing process we do not directly use coal, oil or gas. We use electricity for production purposes and gas for heating the work area. We use 5,531,432 kWh of electricity per year and 2,187,165 kWh of gas.

Climate Change

With regards to climate change and greenhouse gasses the above energy consumption is equivalent to 3400 tonnes of carbon dioxide. Calculated using the “Cities for Climate Protection Greenhouse Gas” software.

To produce a tonne of crude steel is equivalent to 1.8 tonnes of CO2 (world average from the World Steel Association website). Using the above data to convert this to rolled section would take an additional 0.050 tonnes of CO2. Total for rolled section including steel production is 1.85 tonnes of CO2.

Recycled Content

The manufacture of steel allows for 20% re-used materials to be added.


100% of the steel sections can be recycled at the end of use or life.


The durability of cold formed steel is dependent upon the environmental conditions it is exposed to and the coating type and thickness of the product supplied. These need to be taken into account when selecting a product and it’s required life to first maintenance.


In its finished state of a steel sections there is no potential for contamination, this will only occur if the product state is changed and this is not foreseen.

Last Updated: 22nd April 2014