Do's and Don'ts in Selecting and Specifying Stainless Steel Surface Finishes

This paper, presented by David Cochrane of NiDI at the IOM workshop, So You Want to Build it in Stainless Steel, firstly outlines mill and mechanically polished (brushed) finishes to EN 10088 part 2. Patterned finishes are also widely used in architectural applications and useful for reducing distortion and ?oil canning?. Bead blasted finishes are low reflectivity and non-directional. Electropolished finishes can facilitate in process cleaning on patterned floor plates. Coloured finishes are also very flexible and can be applied to dull or polished substrates or previously etched patterned surfaces. The range of surface roughness values for mill (2B) and polished (2J and 2K) surfaces is shown. The care needed when fabricating and installing stainless steel architectural items is discussed as well as maintenance and cleaning methods. Finally some stainless steel building cladding case studies are described that illustrate good grade and finish selection.

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