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Properties of SKF 280 Steel

Updated February 21, 2017

SKF 280 is a proprietary form of BS 6258 stainless steel. SKF 280's composition is a trade secret and is primarily used in the manufacture of various bearings that need to have hardness, machinablity and corrosion resistance. SKF 280 is a member of the micro alloy family of steels due to the precise proportions of various alloying elements.

Chemistry

In terms of chemistry, SKF 280 steel is a medium-carbon steel with specific amounts of elements. Since SKF 280 is a proprietary form of steel, BS 6258 is the most closely matched "generic" steel. BS 6258 contains carbon (.03 to .2 per cent), silicon (1.0 to 1.5 per cent), manganese (1 to 2 per cent), phosphorous (.04 to .045 per cent), sulphur (.03 per cent), chromium (1 to 24 per cent), molybdenum (2 to 3 per cent) and nickel (.5 to 22 per cent). It may also have small amount of titanium in some alloys.

Physical Properties

The primary property of SKF 280 steel is its extreme corrosion resistance. With an unusually high amount of chromium and nickel in the steel, it is resistant to many forms of corrosion that would otherwise destroy most other steels. There is even a patent on using SKF 280 as a pipe material in oil wells with high concentrations of hydrochloric acid. The steel also has increased machinability as evidenced by its use as a bearing material.

Applications

Since SKF 280 is a proprietary steel, the cost of the material is often higher than comparable steels, such as BS 6258. However, its performance makes it a preferred material in the bearings industry, in piping and as a hollow bar material.

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About the Author

Writer, photographer and world traveler James Croxon is a jack of all trades. He began writing in 1998 for the University of Michigan's "The Michigan Times." His work has appeared in the "Toronto Sun" and on defenselink.com and globalsecurity.org. Croxon has a bachelor's degree in English from the American Military University.