What are the issues involving seatingís metal parts and finishes?
The selection for critical environments includes chrome-plated metal parts, cast aluminum parts, electropolished stainless steel parts, and painted or powder-coated parts. The final choice probably will be based on the application, industry served and cost considerations. Chrome-plated metal parts are a popular choice because chrome is very hard and resistant to abrasion and chipping that generates particles. Chrome also is a good conductor of static charge. On the other hand, the metal undersurface has the potential of rusting. This can be a consideration in industries with processes utilizing chemicals that may attack the chrome plating. Cast aluminum and stainless steel also offer good conductivity, as well as chemical resistance and durability. Cleanroom furnishings of high-grade stainless steel are the choice in certain industries, but electropolished stainless steel is very expensive. Cast aluminum is a cost-effective alternative. Painted or powder-coated parts may act as insulat
