The weathering steel market is estimated to be USD 1.0 billion in 2019 and is projected to reach USD 1.6 billion by 2024, at a CAGR of 8.8% from 2019 to 2024. Excellent high strength and increased corrosion resistant over entire life-cycle make it an ideal choice for application in bridge construction. Also, the extraordinary appeal of weathering steel is resulting in architectures and designers increasingly using the material in outdoor and architectural construction.
Building & construction is the major application of weathering steel, especially in bridge construction. Use of weathering steel as a material for the construction of bridges has increased during the last decade. This trend is due to the low maintenance associated with the use of weathering steel, enhanced corrosion resistant, and longer shelf life of the structure. Corten-B type the preferred type for use in the structural application on account superior strength and high toughness.
Plates are the dominant and most widely used form of weathering steel. Weathering steel plates not only provide high strength to the buildings and structures but also add to their aesthetic appeal. Weathering plates are also employed in high temperature and sulfur-rich environments to extend the lifetime of metal. Heavy-duty transport is another major application of weathering steel plate. Shipping containers and railway rolling stock are subject to extreme conditions of changing climates. This makes weathering steel an ideal material as it requires changing climate conditions (wet or dry) to commence the oxidation process and provides a hard layer of protective rust.