LDX 2101® Stainless Rebar which is already included in the British Standard BS6744 for stainless steel reinforcement in concrete has now been approved for use in accordance with the American ASTM A955 standard. Dr David Darwin and colleagues at the University of Kansas carried out the rapid macro cell test stated in ASTM A955 for Outokumpu Stainless North America. The outcome of the test, which is a pass or fail test on corrosion rate values, means that the lean duplex LDX with its low cost and high price stability can now be used in the same applications as the much higher cost 2205 grade that it was compared to. University of Kansas: LDX Corrosion Report  1.1 MB   

For more information please contact:
Poul-Erik Arnvig 
Vice President Market Development
Outokumpu Stainless - North America
425 N. Martingale Rd., Suite 1600
Schaumburg, IL 60173  USA
poul-erik.arnvig@outokumpu.com

The British Standard BS 6744 does not contain a corrosion test requirement and we have been working at our research centre in Avesta Sweden for the last two years on developing a similar test method in solution to the US method that can be used for comparing corrosion resistance of different alloy designations. Last month we published the latest results at the world renowned “Structural Faults” conference in Edinburgh. Whilst many researchers have published corrosion resistance comparisons they have been based on very few test results and not always on commercially produced stainless rebar. This paper is the first to publish enough test results to look at the concept of results scatter as found in carbon steel corrosion in concrete and the effect of the surface finish of the rebar itself. When accounting statistically for scatter LDX 2101® was found to have a similar excellent corrosion resistance to chlorides in concrete pore solution as the more expensive and highly alloyed 2304 and 316 designations. Structural Faults 2010 Corrosion Paper 1.1 MB

or