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New study shows life cycle of stainless steels
Team Stainless today published 'The Global Life Cycle of Stainless Steels', a summary of the results of a study which quantifies the stocks and flows cycle of stainless steels. Conducted by Barbara Reck, Senior Research Scientist at Yale University, the study 'Comprehensive Multilevel Cycle of Stainless Steel in 2015' concluded that on average, 85% of stainless steels are recycled once they reach their end of life, either to become new stainless steels (56%) or a valuable iron source for carbon steels (29%).
The study also considered the recycled content of stainless steels (the amount of scrap used in the production of new stainless steels). Globally, the average recycled content of stainless steel was 44% (32% stainless steel scrap and 12% carbon steel scrap). However, there were significant regional differences, for example, in the USA and Europe recycled content of stainless steels was 71% and 70% respectively. The global figure is strongly impacted by China which, in 2015, produced 52% of the world's stainless steels but contained on average only 23% recycled content. It is likely that this reflects the fact that the availability of scrap stainless steel in China is lower because most in-use stainless steels have not yet reached their end of life.
The study also analyzed end use sector specific end-of-life flows. Household appliances and electronics and metal goods had the lowest yet high end-of-life collection rate at 80%, while building and infrastructure had an 85% end-of-life collection rate and transportation and industrial machinery accounted for the highest end-of-life collection rate at 90%.
Kai Hasenclever, ISSF Director Economics & Statistics and Long Products, and project leader of this Team Stainless project commented:
"Stainless steels support many essential applications in our modern world from transportation, buildings, bridges and water pipes to medical uses and food preparation. As the focus on sustainability intensifies there is an increasing need to quantifying the material life cycle of stainless steels and their efficiencies from production to fabrication, manufacturing, use, recycling and disposal.
"This latest study into stainless steel stocks and flows cycles confirms its high end-of-life recyclability and, in the majority of regions, its high recycled content. This, coupled with stainless steels' durability and longevity, clearly demonstrates it credentials as a sustainable material of choice."
- The Global Life Cycle of Stainless Steels can be downloaded here
- The Study is based on the most recent 2015 figures.
- Team Stainless is an informal alliance of Eurofer, the International Chromium Development Association, the International Molybdenum Association, the International Nickel Study Group, the International Stainless Steel Forum, and the Nickel Institute. Its primary function is to support the stainless steels industry by providing accurate and industry-leading information about the properties and sustainable benefits of stainless steels.
- For more information, please contact email@example.com or visit http://www.teamstainless.org
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IMOA is a non profit trade association, representing the majority of the molybdenum industry worldwide. It works to raise awareness about the unique properties of molybdenum, its beneficial effects on materials performance, its safety in use and its contribution to sustainable development.
Molybdenum is added to alloy steels to improve strength, toughness, hardenability and weldability for numerous applications in the automotive, shipbuilding, construction, mining, chemical, oil & gas and energy generation industries. In stainless steels and superalloys, it improves corrosion resistance and high-temperature performance and finds uses in many industrial applications. It is also used in a variety of products from catalysts and lubricants to pigments and paint.
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