Weathering Steel has a unique, natural oxide coating that when fully mature is dense, tightly adherent and relatively impervious to further atmospheric corrosion. Minor damage to this oxide coating heals itself; therefore, maintenance is greatly reduced. Bare Weathering Steel is suitable for many atmospheric environments, including moderate industrial and select marine exposures. It is compatible with other construction materials – brick, stone and wood – when appropriate details are incorporated in the design. Weathering Steel is available with yield strengths of 50 ksi, 70 ksi and 100 ksi allowing designs with relatively light sections. When combined with the fact little or no painting is required, Weathering Steel provides significant first cost and life cycle cost savings.