Common materials include: Stainless Steel: Highly resistant to corrosion, ideal for harsh environments. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned in this technical guide only apply to our own cable management ranges and cannot under any circumstances be transposed to si osure, overheating or. How long a cable tray system lasts and how well it works depends a lot on its surroundings. Knowing these environmental points is key to choosing the right material. How materials expand and shrink: Materials get bigger when hot and. B manufactures its cable tray in a range of materials with a variety of finishes. Aluminum's exceptional corrosion resistance, particularly. Aluminum, fiberglass, steel, and stainless steel are all readily available materials for cable tray manufacturing.